FREE EMERGENCY NURSING LEARNING RESOURCES: A BEGINNER'S GUIDE
SHORT INTRODUCTION
Emergency nursing is a fast-paced area of nursing focused on the rapid assessment, stabilization, treatment support, monitoring, and safe disposition of patients with acute illness or injury.
Emergency nurses may care for patients experiencing trauma, respiratory distress, shock, cardiac emergencies, stroke, altered mental status, severe infection, poisoning, burns, acute abdominal conditions, obstetric emergencies, psychiatric crises, and many other time-sensitive conditions.
Unlike routine clinical care, emergency nursing often requires nurses to identify priorities quickly, recognize deterioration early, communicate effectively, and provide appropriate interventions while working with incomplete information.
For beginners, emergency nursing provides an excellent foundation for clinical assessment, triage, resuscitation, critical thinking, patient safety, teamwork, and rapid decision-making.
WHO SHOULD LEARN THIS?
Emergency nursing is especially useful for:
• Nursing students
• Newly graduated nurses
• Registered nurses
• Emergency department nurses
• Critical care nurses
• Medical-surgical nurses
• Community health nurses
• Ambulance and prehospital healthcare providers
• Nurses preparing for emergency department practice
• Healthcare professionals interested in acute care
• Nursing educators
• Healthcare students studying acute and emergency conditions
QUICK FACTS
• Category: Nursing / Emergency Care / Acute Care
• Skill Level: Beginner
• Main Focus: Rapid assessment, triage, stabilization, resuscitation, emergency interventions, and patient safety
• Important Skills: ABCDE assessment, vital signs, triage, clinical observation, emergency communication, CPR, resuscitation support, medication safety, documentation, and handover
• Common Settings: Emergency departments, urgent-care areas, trauma centers, ambulances, disaster settings, and other acute-care environments
• Learning Style: Theory + clinical assessment + simulation + case studies + practical skills
• Core Principle: Recognize life-threatening problems early, prioritize appropriately, intervene safely, reassess continuously, and escalate when necessary
PREREQUISITES
Beginners do not necessarily need advanced emergency nursing experience.
A basic understanding of the following subjects is helpful:
• Anatomy and physiology
• Fundamentals of nursing
• Pharmacology
• Medical terminology
• Patient assessment
• Infection prevention and control
• Basic life support
• Clinical documentation
• Patient safety
Learners should also become familiar with their institution's emergency protocols, scope of practice, medication policies, escalation procedures, and local legal requirements.
MAIN CONTENT
WHAT IS EMERGENCY NURSING?
Emergency nursing focuses on the immediate care of patients with acute illness, injury, or other conditions requiring urgent assessment and intervention.
Emergency nurses must be able to:
• Recognize deterioration
• Identify immediate threats to life
• Prioritize patients
• Perform rapid assessments
• Support resuscitation
• Monitor vital signs
• Administer medications safely
• Provide emergency interventions within scope
• Communicate with the multidisciplinary team
• Reassess patients continuously
• Prepare patients for transfer, admission, discharge, or referral
WHY IS EMERGENCY NURSING IMPORTANT?
Emergency conditions can deteriorate rapidly.
A patient who initially appears stable may develop:
• Respiratory failure
• Circulatory collapse
• Altered consciousness
• Severe infection
• Cardiac arrest
• Neurological deterioration
• Major bleeding
• Other life-threatening complications
Early recognition and appropriate escalation can therefore make a major difference in patient outcomes.
WHO's Basic Emergency Care program emphasizes a systematic approach to the initial assessment and management of time-sensitive acute illness and injury.
THE EMERGENCY NURSE'S ROLE
Emergency nurses may be responsible for:
• Initial assessment — The first focused evaluation used to identify immediate threats and determine priorities.
• Triage — Prioritizing patients according to urgency and clinical risk.
• Monitoring — Repeated or continuous observation of vital signs, symptoms, and clinical status.
• Resuscitation support — Assisting with life-saving interventions for patients with cardiac, respiratory, or circulatory emergencies.
• Medication administration
• IV therapy
• Wound and trauma care
• Pain management
• Patient education
• Psychological support
• Documentation
• Handover
• Discharge preparation
• Referral and transfer coordination
• Infection prevention
• Patient safety
THE FIRST PRIORITY: PATIENT SAFETY
Emergency nursing begins with safety because both patients and healthcare workers may be exposed to rapidly changing clinical and environmental risks.
Important safety considerations include:
• Personal protective equipment (PPE) — Equipment such as gloves, masks, gowns, or eye protection used to reduce exposure to hazards.
• Infection prevention
• Environmental hazards
• Identification of the patient
• Medication safety
• Falls prevention
• Equipment safety
• Sharps safety
• Safe patient movement
• Violence and aggression awareness
• Appropriate escalation — Promptly informing the appropriate healthcare professional or team when a patient's condition exceeds the current level of care.
TRIAGE
Triage is the process of prioritizing patients according to urgency rather than simply treating patients in the order they arrive.
The purpose is to identify patients who require immediate or time-sensitive care.
Triage assessment may consider:
• Airway
• Breathing
• Circulation
• Consciousness
• Vital signs
• Pain
• Mechanism of injury — How an injury occurred, such as a fall, collision, burn, or penetrating injury.
• Presenting symptoms
• Risk factors
• Clinical appearance
• Potential for deterioration
Triage is a dynamic process. A patient's priority may change if the patient's condition improves or deteriorates.
TRIAGE PRINCIPLES
A patient with a life-threatening condition should receive priority over a patient with a less urgent condition, regardless of arrival time.
Emergency nurses should remain alert to:
• Sudden deterioration
• Abnormal vital signs
• Severe pain
• Respiratory distress
• Altered mental status
• Major bleeding
• Signs of shock
• Severe allergic reactions
• Stroke symptoms
• Cardiac symptoms
• Sepsis indicators
ABCDE PRIMARY ASSESSMENT
A systematic primary assessment helps identify immediate threats to life.
ABCDE commonly refers to:
A — Airway
B — Breathing
C — Circulation
D — Disability
E — Exposure
The ABCDE approach is designed to identify and address immediate threats in a structured order. WHO's Basic Emergency Care program uses ABCDE as a core approach to the acutely ill and injured patient.
A — AIRWAY
Assess whether the airway is:
• Patent — Open and allowing air to pass.
• Obstructed — Partially or completely blocked.
• At risk of obstruction — Likely to become blocked because of swelling, trauma, secretions, foreign material, or reduced consciousness.
Observe for:
• Stridor — A high-pitched breathing sound that may indicate upper-airway narrowing.
• Gurgling — A noisy breathing sound that may indicate secretions or fluid in the airway.
• Snoring respirations — Noisy breathing that may occur when the upper airway is partially obstructed.
• Foreign-body obstruction
• Facial or neck trauma
• Swelling
• Reduced consciousness
Airway concerns require immediate escalation and appropriate intervention within the nurse's scope and local protocol.
B — BREATHING
Assess:
• Respiratory rate
• Oxygen saturation
• Work of breathing
• Chest movement
• Breath sounds
• Respiratory effort
• Cyanosis
• Ability to speak
• Signs of respiratory distress
Work of breathing describes the effort required to breathe. Increased effort may be suggested by accessory-muscle use, abnormal respiratory pattern, difficulty speaking, or visible respiratory distress.
Potential emergencies include:
• Severe asthma
• Pulmonary edema
• Pneumothorax
• Pneumonia
• Pulmonary embolism
• Respiratory failure
• Airway obstruction
C — CIRCULATION
Assess:
• Heart rate
• Blood pressure
• Peripheral perfusion — The adequacy of blood flow to the body's tissues.
• Skin temperature
• Skin color
• Capillary refill where appropriate
• Peripheral pulses
• Major bleeding
• IV access when indicated
Potential circulatory emergencies include:
• Hemorrhage
• Shock
• Severe dehydration
• Cardiac emergencies
• Sepsis
• Anaphylaxis
D — DISABILITY
Assess neurological status.
Consider:
• Level of consciousness
• Pupillary response
• Blood glucose when indicated
• Motor function
• Sensory changes
• Seizure activity
• New confusion
• Focal neurological deficits — New neurological abnormalities affecting a specific function or body region, such as weakness or speech difficulty.
Altered mental status can have many causes, including metabolic, neurological, toxicological, infectious, psychiatric, and traumatic conditions.
E — EXPOSURE
Exposure involves appropriately examining the patient for injuries, rashes, bleeding, burns, swelling, or other findings while maintaining:
• Privacy
• Dignity
• Temperature control
• Infection prevention
The patient should be exposed only as much as clinically necessary.
SAMPLE HISTORY
Emergency assessment may use the SAMPLE framework:
S — Signs and symptoms: What the patient is experiencing.
A — Allergies: Known allergies, especially those relevant to medications or treatment.
M — Medications: Current medications and recent medication use.
P — Past medical history: Important previous illnesses, conditions, procedures, or treatments.
L — Last oral intake: The most recent food or fluid intake.
E — Events leading to the illness or injury: What happened before the emergency began.
WHO's Basic Emergency Care program also incorporates SAMPLE as a structured method for gathering important emergency history.
SECONDARY ASSESSMENT
After immediate life threats have been addressed, a more detailed assessment can be performed.
This may include:
• Complete vital signs
• Pain assessment
• Head-to-toe examination
• Relevant history
• Medication review
• Allergies
• Laboratory investigations
• Diagnostic tests
• Imaging
• Focused physical examination
The secondary assessment provides additional information after immediate threats have been identified and addressed.
VITAL SIGNS
Emergency nurses frequently monitor:
• Temperature
• Heart rate
• Respiratory rate
• Blood pressure
• Oxygen saturation
• Level of consciousness
• Pain score
Trends can be more informative than a single measurement.
A worsening trend may indicate deterioration even before a patient becomes critically unstable.
RESPIRATORY ASSESSMENT
Important observations include:
• Respiratory rate
• Depth
• Pattern
• Oxygen saturation
• Work of breathing
• Breath sounds
• Chest expansion
• Accessory muscle use
• Ability to speak
Respiratory deterioration should be recognized and escalated promptly.
CARDIOVASCULAR ASSESSMENT
Assess:
• Heart rate
• Rhythm
• Blood pressure
• Peripheral perfusion
• Chest pain
• Peripheral pulses
• Skin appearance
• Signs of fluid imbalance
ECG acquisition and interpretation skills are particularly valuable in emergency nursing.
NEUROLOGICAL ASSESSMENT
Assess:
• Level of consciousness
• Orientation
• Pupils
• Speech
• Motor function
• Sensory changes
• Facial symmetry
• Seizure activity
Sudden neurological changes should be treated as potentially time-sensitive until appropriately assessed.
PAIN ASSESSMENT
Emergency nurses frequently encounter acute pain.
Assessment may include:
• Location
• Onset
• Character
• Severity
• Radiation
• Timing
• Aggravating factors
• Relieving factors
• Associated symptoms
Pain assessment should be repeated after intervention to evaluate response.
CHEST PAIN
Potential causes of chest pain range from benign conditions to life-threatening emergencies.
Emergency assessment should consider:
• Onset
• Location
• Character
• Radiation
• Severity
• Associated symptoms
• Cardiovascular risk factors
• Vital signs
• ECG findings when indicated
Potential emergencies include:
• Acute coronary syndrome
• Pulmonary embolism
• Aortic emergencies
• Pneumothorax
• Pericardial conditions
ACUTE CORONARY SYNDROME
Acute coronary syndrome (ACS) describes a group of conditions caused by sudden reduction of blood flow to the heart muscle.
Emergency nurses may care for patients with:
• Unstable angina — Ischemic chest discomfort without evidence of myocardial infarction.
• NSTEMI — Non-ST-elevation myocardial infarction, a heart attack without the characteristic ST elevation seen in STEMI.
• STEMI — ST-elevation myocardial infarction, a heart attack associated with ST-segment elevation in the appropriate clinical context.
Important nursing responsibilities can include:
• Rapid assessment
• ECG acquisition according to protocol
• Continuous monitoring when indicated
• IV access
• Medication administration
• Reassessment
• Communication with the emergency and cardiac teams
STROKE
Stroke is a sudden neurological disorder caused by interruption of blood flow to part of the brain or bleeding within the brain.
Stroke recognition is time-sensitive because some treatments are highly dependent on how quickly the patient is assessed.
Possible warning signs include:
• Facial weakness
• Arm weakness
• Speech difficulty
• Sudden vision changes
• Sudden severe headache
• Sudden loss of balance
• New neurological deficits
Emergency nurses should follow local stroke pathways and rapidly escalate suspected stroke.
SEIZURES
A seizure is a period of abnormal electrical activity in the brain that may cause changes in awareness, movement, sensation, or behavior.
During a seizure, priorities include:
• Protecting the patient from injury
• Maintaining airway awareness
• Monitoring breathing
• Timing the seizure
• Avoiding unnecessary restraint
• Avoiding placement of objects in the mouth
• Monitoring recovery
• Escalating prolonged or recurrent seizures according to protocol
SHOCK
Shock involves inadequate tissue perfusion, meaning that the body's tissues are not receiving sufficient blood flow and oxygen.
Major categories include:
• Hypovolemic shock — Caused by inadequate circulating volume, commonly from bleeding or major fluid loss.
• Cardiogenic shock — Caused by severe cardiac pump failure.
• Distributive shock — Caused by abnormal blood-vessel dilation and distribution of blood flow, as may occur in sepsis or anaphylaxis.
• Obstructive shock — Caused by a physical obstruction to circulation, such as tension pneumothorax or cardiac tamponade.
Possible signs include:
• Hypotension
• Tachycardia
• Altered mental status
• Cool or abnormal skin
• Reduced urine output
• Weak peripheral pulses
• Abnormal respiratory pattern
• Poor perfusion
The cause of shock must be identified and treated as rapidly as possible.
HEMORRHAGE
Hemorrhage means significant bleeding that can reduce circulating blood volume and lead to shock.
Emergency nurses may encounter:
• External bleeding
• Gastrointestinal bleeding
• Obstetric hemorrhage
• Internal bleeding
• Traumatic bleeding
Priorities include:
• Rapid assessment
• Hemorrhage control
• Circulatory support
• Monitoring
• IV access when indicated
• Blood-product preparation when required
• Rapid escalation
SEPSIS AND SEPTIC SHOCK
Sepsis is life-threatening organ dysfunction associated with a dysregulated response to infection.
Septic shock is a more severe form of sepsis involving profound circulatory and cellular abnormalities and a high risk of death.
Possible warning signs may include:
• Altered mental status
• Abnormal temperature
• Tachycardia
• Tachypnea
• Hypotension
• Reduced urine output
• Abnormal perfusion
Emergency nurses should follow current institutional sepsis pathways and rapidly escalate suspected deterioration.
ANAPHYLAXIS
Anaphylaxis is a severe, potentially life-threatening systemic allergic reaction that can rapidly compromise:
• Airway
• Breathing
• Circulation
Possible features include:
• Airway swelling
• Wheezing
• Respiratory distress
• Hypotension
• Urticaria
• Angioedema
• Gastrointestinal symptoms
Emergency nurses must recognize anaphylaxis rapidly and follow the emergency protocol for appropriate treatment and escalation.
RESPIRATORY EMERGENCIES
Common emergency presentations include:
• Severe asthma
• COPD exacerbation
• Pneumonia
• Pulmonary edema
• Pneumothorax
• Pulmonary embolism
• Airway obstruction
• Respiratory failure
Emergency assessment should focus on airway, breathing, oxygenation, ventilation, and work of breathing.
ASTHMA EXACERBATION
An asthma exacerbation is an acute worsening of airway narrowing and respiratory symptoms.
Assess:
• Respiratory rate
• Work of breathing
• Ability to speak
• Oxygenation
• Wheezing or reduced air entry
• Mental status
• Response to treatment
Severe deterioration requires urgent escalation.
TRAUMA NURSING
Emergency nurses may care for:
• Falls
• Road traffic injuries
• Penetrating trauma
• Blunt trauma
• Burns
• Fractures
• Head injuries
• Spinal injuries
• Crush injuries
Trauma care requires systematic assessment and prevention of secondary injury.
TRAUMA PRIMARY SURVEY
A systematic trauma assessment may include:
• Airway with cervical-spine considerations when appropriate
• Breathing
• Circulation and hemorrhage control
• Disability
• Exposure/environmental control
The exact approach should follow current trauma guidelines and institutional protocols.
HEAD INJURY
Assess:
• Mechanism of injury
• Level of consciousness
• Pupils
• Vomiting
• Headache
• Neurological changes
• Seizure
• Anticoagulant use
• Signs of skull injury
Any deterioration in neurological status requires prompt escalation.
SPINAL INJURY
Consider spinal injury based on:
• Mechanism
• Neurological findings
• Pain
• Weakness
• Sensory changes
• Loss of consciousness
• Other clinical findings
Follow current trauma protocols regarding spinal assessment, movement, and immobilization.
BURNS
Burn assessment may include:
• Cause
• Location
• Depth — The extent to which tissue layers have been affected.
• Extent — The amount of body surface affected.
• Airway involvement
• Inhalation injury
• Associated trauma
• Pain
• Circulatory status
Large or complicated burns require specialized assessment and referral.
POISONING AND OVERDOSE
Poisoning occurs when exposure to a substance causes harmful effects. An overdose involves taking or receiving more of a substance than intended or safely tolerated.
Emergency nurses may encounter:
• Medication overdose
• Chemical exposure
• Alcohol poisoning
• Recreational drug toxicity
• Household poisoning
• Occupational exposure
Assessment may include:
• Substance involved
• Amount
• Time of exposure
• Route
• Symptoms
• Vital signs
• Level of consciousness
Poison-control and toxicology guidance should be used where available.
ALTERED MENTAL STATUS
Altered mental status refers to a change in a person's normal level of awareness, attention, thinking, behavior, or consciousness.
Causes may include:
• Hypoglycemia — Abnormally low blood glucose that can impair brain function and may cause confusion, seizures, or loss of consciousness.
• Hypoxia — Inadequate oxygen availability to tissues, potentially causing confusion, agitation, or reduced consciousness.
• Stroke — Sudden neurological dysfunction caused by interrupted blood flow or bleeding in the brain.
• Seizure — Abnormal electrical activity in the brain that may temporarily alter consciousness or behavior.
• Infection — An infectious process that may cause systemic illness or altered cognition.
• Trauma — Physical injury that may affect the brain or other body systems.
• Intoxication — Altered function caused by alcohol, drugs, medications, or other toxic substances.
• Medication effects — Changes caused by therapeutic effects, adverse effects, interactions, or excessive medication exposure.
• Metabolic disorders — Problems involving glucose, electrolytes, acid-base balance, or other body processes that affect normal function.
• Psychiatric illness — Conditions affecting thought, mood, perception, or behavior.
Emergency nurses should avoid assuming that confusion is purely psychiatric before potentially serious medical causes have been assessed.
HYPOGLYCEMIA
Hypoglycemia means an abnormally low blood glucose concentration.
Possible symptoms include:
• Sweating
• Trembling
• Hunger
• Confusion
• Weakness
• Behavioral changes
• Seizures
• Loss of consciousness
A blood glucose level below 70 mg/dL (3.9 mmol/L) is commonly used as an important alert threshold, while levels below 54 mg/dL (3.0 mmol/L) indicate clinically significant hypoglycemia.
Severe hypoglycemia is defined by altered mental or physical functioning requiring assistance rather than by a single glucose number.
Blood glucose assessment is an important consideration when clinically indicated.
CARDIAC ARREST
Cardiac arrest occurs when the heart suddenly stops producing effective circulation.
During cardiac arrest, emergency nurses may participate in:
• Recognition of cardiac arrest
• CPR
• Defibrillation support
• Airway and ventilation support
• Medication administration
• Rhythm monitoring
• Team communication
• Documentation
• Post-resuscitation care
Current resuscitation guidelines and certified training should be used for clinical practice.
BASIC LIFE SUPPORT
Basic Life Support (BLS) is the foundation of early emergency care for cardiac arrest and other life-threatening situations.
BLS knowledge includes:
• Recognition of cardiac arrest
• CPR
• AED use
• Basic airway and breathing support
• Emergency activation
• Teamwork
For conventional adult CPR without an advanced airway, the 2025 AHA guidance recommends:
• 100–120 compressions per minute
• At least 5 cm (2 inches) compression depth for an average adult
• Avoiding excessive depth greater than 6 cm (2.4 inches)
• 30:2 compression-to-ventilation ratio
• Minimizing interruptions in compressions
When an advanced airway is in place, continuous chest compressions are used with approximately 1 breath every 6 seconds (10 breaths per minute).
The American Heart Association provides BLS training for healthcare professionals, while its ACLS program addresses advanced cardiovascular life-support skills.
Emergency nurses should maintain current certification when required by their employer or professional role.
ADVANCED CARDIOVASCULAR LIFE SUPPORT
Advanced Cardiovascular Life Support (ACLS) builds upon basic life-support skills and focuses on management of cardiac arrest and other cardiovascular emergencies.
Depending on the course and setting, learning may include:
• Rhythm recognition — Identifying important cardiac rhythms and their clinical significance.
• Resuscitation algorithms — Structured pathways for managing specific emergency situations.
• Defibrillation — Electrical treatment used for appropriate shockable cardiac rhythms.
• Cardioversion — Synchronized electrical treatment used for selected tachyarrhythmias.
• Airway management
• Medication use
• Team dynamics
• Post-cardiac-arrest care
The 2025 AHA ACLS guidance includes recommendations for cardiac arrest, defibrillation, cardioversion, advanced airway management, medications, and other life-threatening cardiovascular emergencies.
PEDIATRIC EMERGENCY NURSING
Children can present differently from adults.
Important areas include:
• Pediatric assessment
• Weight-based medication considerations — Pediatric medication doses may depend on body weight and must be calculated and verified according to current protocols.
• Respiratory emergencies
• Dehydration
• Fever
• Seizures
• Trauma
• Pediatric resuscitation
• Safeguarding
Age-appropriate communication and family involvement are also important.
GERIATRIC EMERGENCY NURSING
Older adults may have atypical presentations.
Emergency nurses should consider:
• Polypharmacy — The use of multiple medications, which can increase the risk of interactions and adverse effects.
• Falls
• Delirium — An acute change in attention, awareness, and cognition that commonly develops over a short period.
• Dementia
• Frailty — Reduced physiological reserve that can make a person more vulnerable to illness or injury.
• Dehydration
• Sepsis
• Functional decline
• Anticoagulant use
• Social vulnerability
OBSTETRIC EMERGENCIES
Emergency departments may receive patients with:
• Ectopic pregnancy — Pregnancy occurring outside the normal uterine cavity, most commonly in a fallopian tube.
• Pregnancy-related hypertension
• Hemorrhage
• Seizures
• Trauma
• Preterm labor
• Other acute pregnancy complications
Emergency nurses should recognize red flags and rapidly involve appropriate obstetric professionals.
PSYCHIATRIC EMERGENCIES
Emergency nurses may encounter:
• Suicidal thoughts
• Self-harm
• Severe agitation
• Psychosis — A state involving impaired contact with reality, which may include hallucinations or delusions.
• Acute intoxication
• Withdrawal — Symptoms that may occur when a person reduces or stops a substance after physiological dependence has developed.
• Severe anxiety
• Behavioral emergencies
Safety, respectful communication, risk assessment, de-escalation, and appropriate escalation are essential.
DE-ESCALATION
De-escalation means using communication and environmental strategies to reduce agitation and prevent further escalation.
When caring for an agitated patient:
• Remain calm
• Use respectful language
• Maintain appropriate personal space
• Reduce unnecessary stimulation
• Listen to concerns
• Avoid unnecessary confrontation
• Set clear limits
• Offer choices when appropriate
• Call for assistance when necessary
Emergency nurses must follow local policies regarding behavioral emergencies and restrictive interventions.
IV THERAPY
Emergency nursing frequently involves IV access and fluid therapy.
Important skills include:
• Selecting an appropriate site
• Maintaining aseptic technique
• Securing IV access
• Monitoring the site
• Administering prescribed fluids
• Recognizing complications
• Documenting care
Intravenous therapy can provide access for fluids, medications, blood products, and other prescribed treatments.
Emergency IV therapy must follow institutional protocols and the nurse's scope of practice.
MEDICATION SAFETY
Emergency environments increase the risk of medication errors because of:
• Time pressure
• Multiple medications
• Verbal orders
• Similar medication names
• Rapid patient deterioration
• Frequent interruptions
Important safety practices include:
• Patient identification
• Allergy verification
• Medication reconciliation — Comparing the patient's current medication use with prescribed or documented medications to identify discrepancies.
• Dose verification
• Route verification
• Appropriate monitoring
• Documentation
• Double-checking high-alert medications when required
BLOOD TRANSFUSION IN EMERGENCY CARE
Emergency situations may require urgent blood-product administration.
Nurses should understand:
• Patient identification
• Blood-product verification
• Compatibility procedures
• Baseline observations
• Monitoring
• Recognition of transfusion reactions
• Emergency escalation
• Documentation
A transfusion reaction is an adverse response associated with blood-product administration and may require immediate assessment and escalation.
Always follow current blood-bank procedures and institutional policy.
ECG IN EMERGENCY NURSING
An electrocardiogram (ECG) records the heart's electrical activity and can help identify important cardiac abnormalities.
Beginners should learn:
• Standard 12-lead ECG placement
• Limb-lead placement
• Chest-lead placement
• Basic rhythm recognition
• Heart rate assessment
• Rhythm assessment
• Recognition of obvious emergencies
• Communication of abnormal findings
Common emergency presentations may include:
• STEMI — ST-elevation myocardial infarction, a type of acute heart attack associated with ST-segment elevation in the appropriate clinical context.
• Significant arrhythmias — Abnormal heart rhythms that may impair circulation or cause symptoms.
• Bradycardia — An abnormally slow heart rate.
• Tachycardia — An abnormally fast heart rate.
• Conduction abnormalities — Problems with the electrical transmission of impulses through the heart.
PATIENT MONITORING
Emergency patients may require continuous or repeated monitoring.
Depending on the condition, monitoring can include:
• ECG
• Heart rate
• Blood pressure
• Oxygen saturation
• Respiratory rate
• Temperature
• Neurological status
• Urine output
• Pain
• Other condition-specific parameters
Trends are often more informative than a single measurement. A worsening trend may indicate deterioration even before a patient becomes critically unstable.
OXYGEN THERAPY
Oxygen therapy involves providing supplemental oxygen when clinically indicated.
Oxygen should be administered according to the patient's clinical condition, prescribed targets, emergency protocols, and current guidelines.
Nurses should monitor:
• Oxygen saturation — An estimate of the percentage of hemoglobin carrying oxygen, commonly measured using pulse oximetry.
• Respiratory effort
• Mental status
• Response to therapy
• Oxygen delivery device
WOUND CARE
Emergency wound care may involve:
• Assessment
• Hemorrhage control
• Cleaning
• Dressing
• Infection prevention
• Pain management
• Tetanus considerations
• Referral for closure or specialist care
INFECTION PREVENTION
Emergency departments can have high patient turnover and exposure to infectious conditions.
Important practices include:
• Hand hygiene
• PPE
• Standard precautions — Basic infection-prevention measures applied during patient care regardless of known infection status.
• Appropriate isolation
• Safe injection practices
• Sharps disposal
• Environmental cleaning
• Appropriate respiratory precautions
PATIENT HANDOVER
Emergency handover should communicate important information clearly and efficiently.
A structured format such as SBAR may include:
S — Situation: What is happening now?
B — Background: What relevant history or context is important?
A — Assessment: What has been found and what is the current concern?
R — Recommendation: What action, monitoring, or follow-up is needed?
TRANSFER AND REFERRAL
Patients may require transfer to:
• Operating theatres
• Intensive care
• Cardiac units
• Stroke units
• Trauma centers
• Pediatric units
• Psychiatric services
• Other specialized facilities
Safe transfer requires:
• Clinical stabilization as appropriate
• Clear communication
• Accurate documentation
• Appropriate monitoring
• Medication information
• Relevant investigations
• Receiving-team communication
DOCUMENTATION
Emergency documentation should be:
• Accurate
• Objective
• Timely
• Concise
• Clinically relevant
Document:
• Initial assessment
• Triage category
• Vital signs
• Patient complaints
• Clinical findings
• Interventions
• Medications
• Patient response
• Reassessment
• Handover
• Transfer
• Disposition
REASSESSMENT
Emergency nursing is not a single assessment.
Reassessment means repeating relevant observations and clinical evaluation to determine whether the patient's condition or response to treatment has changed.
Patients may:
• Improve
• Deteriorate
• Change unexpectedly
• Respond to treatment
• Develop new symptoms
A patient's response to treatment is clinically important information.
DISASTER AND MASS-CASUALTY NURSING
A mass-casualty incident (MCI) occurs when the number or severity of patients temporarily exceeds available healthcare resources.
Emergency nurses may need to understand:
• Triage — Prioritizing patients according to urgency and available resources.
• Incident command — A structured system for coordinating personnel and resources during an emergency.
• Resource allocation
• Patient tracking
• Communication
• Personal safety
• Surge capacity — The ability of a healthcare system to expand its capacity during unusually high demand.
• Interfacility transfer
• Psychological support
WHO's Mass Casualty Management resources focus on preparedness, operational efficiency, safety, and tools for managing mass-casualty incidents.
PREHOSPITAL EMERGENCY CARE
Prehospital care refers to emergency assessment, treatment, stabilization, and transport provided before a patient reaches definitive hospital care.
Important concepts include:
• Scene safety
• Primary assessment
• Stabilization
• Transport decisions
• Communication
• Handover
• Monitoring
• Continuity of care
WHO's Prehospital Toolkit addresses system components such as governance, operations, provider training, equipment and medications, communication, and quality improvement.
CLINICAL CHECKLISTS
Checklists are structured reminder tools that help healthcare teams perform critical steps consistently during high-acuity situations.
WHO's emergency-care resources include tools addressing trauma care, medical emergencies, referral, and interfacility transfer.
These tools are particularly useful for simulation and structured team training.
CRITICAL THINKING IN EMERGENCY NURSING
Emergency nurses constantly ask:
• What is the immediate threat?
• What can kill this patient first?
• What information is missing?
• Is the patient deteriorating?
• What intervention is needed now?
• What should be reassessed?
• Who needs to be notified?
• Does the patient require transfer or escalation?
This mindset helps the nurse prioritize immediate threats while continuing assessment and reassessment.
TIME-SENSITIVE THINKING
Emergency nursing often involves acting before the complete diagnosis is known.
A useful mindset is:
RECOGNIZE
↓
ASSESS
↓
PRIORITIZE
↓
INTERVENE
↓
REASSESS
↓
ESCALATE OR CONTINUE CARE
This cycle reflects the dynamic nature of emergency care: identify immediate threats, act appropriately, evaluate the response, and adjust the plan as the patient's condition changes.
BENEFITS OF LEARNING EMERGENCY NURSING
Learning emergency nursing can help you:
• Improve rapid assessment skills — Recognize important clinical changes more efficiently.
• Recognize clinical deterioration earlier — Identify warning signs before a patient's condition becomes more severe.
• Develop stronger clinical judgment — Connect assessment findings with appropriate priorities.
• Understand emergency triage — Learn how urgency influences patient prioritization.
• Improve resuscitation knowledge — Build familiarity with CPR, BLS, ACLS, and emergency algorithms.
• Strengthen ABCDE assessment skills — Use a systematic approach to immediate assessment.
• Improve emergency communication — Communicate important findings clearly and quickly.
• Understand common acute conditions — Build foundational knowledge of frequent emergencies.
• Develop trauma-care knowledge — Understand initial assessment and stabilization concepts.
• Improve medication safety — Reduce avoidable medication-related risks.
• Strengthen patient-monitoring skills — Recognize meaningful changes in vital signs and clinical status.
• Improve handover and documentation — Transfer information accurately between healthcare teams.
• Develop teamwork skills — Participate more effectively in coordinated emergency care.
• Prepare for emergency department practice — Build foundational knowledge relevant to acute-care environments.
• Prepare for simulation and skills assessments — Apply theoretical knowledge to structured clinical scenarios.
• Build a foundation for critical care nursing — Develop knowledge relevant to higher-acuity environments.
• Improve confidence in responding to acute situations — Familiarity with emergency frameworks can make supervised practice more structured.
LEARNING ROADMAP
STAGE 1 — MASTER NURSING FUNDAMENTALS
Review:
• Vital signs
• Patient assessment
• Anatomy and physiology
• Pharmacology
• Infection prevention
• Medication safety
STAGE 2 — LEARN EMERGENCY TRIAGE
Study:
• Triage principles — Prioritizing patients according to urgency.
• Acuity — The level of severity and immediate care requirement.
• Red flags — Findings that may indicate serious or rapidly worsening illness.
• Rapid assessment
• Reassessment
• Escalation
STAGE 3 — MASTER ABCDE
Practice:
• Airway — Check whether the airway is open and protected.
• Breathing — Assess breathing effectiveness, oxygenation, and respiratory distress.
• Circulation — Assess circulation, bleeding, pulse, and tissue perfusion.
• Disability — Assess neurological status and relevant glucose findings.
• Exposure — Examine the patient appropriately while maintaining privacy, dignity, and temperature control.
STAGE 4 — LEARN SAMPLE HISTORY
Practice:
• Signs and symptoms — What the patient is experiencing.
• Allergies — Known allergies relevant to care.
• Medications — Current and recently used medications.
• Past medical history — Relevant previous illnesses, conditions, or procedures.
• Last oral intake — Most recent food or fluid intake.
• Events leading to illness or injury — What happened before the emergency.
STAGE 5 — STUDY COMMON EMERGENCIES
Focus on:
• Chest pain
• Stroke
• Shock
• Sepsis
• Respiratory distress
• Anaphylaxis
• Seizures
• Hypoglycemia
• Trauma
• Poisoning
• Altered mental status
STAGE 6 — LEARN RESUSCITATION
Study:
• BLS
• CPR
• AED
• ACLS
• Defibrillation
• Team dynamics
• Post-resuscitation care
Current resuscitation guidance should always be checked because recommendations and algorithms may change over time. The current AHA CPR/ECC guideline set is the 2025 edition.
STAGE 7 — DEVELOP TRAUMA SKILLS
Study:
• Primary survey — Rapid initial assessment used to identify immediately life-threatening problems.
• Secondary survey — More detailed assessment performed after immediate threats have been addressed.
• Hemorrhage
• Head injury
• Spinal injury
• Burns
• Fractures
• Wound care
STAGE 8 — DEVELOP ECG AND CARDIAC SKILLS
Learn:
• 12-lead ECG acquisition — Recording the heart's electrical activity from standard ECG leads.
• Basic rhythm recognition
• Bradycardia
• Tachycardia
• Acute coronary syndrome
• Cardiac monitoring
STAGE 9 — DEVELOP MEDICATION AND IV SKILLS
Study:
• Emergency medications
• IV therapy
• Fluid therapy
• Blood products
• Medication safety
• High-alert medications — Medicines carrying a greater risk of significant harm when used incorrectly.
STAGE 10 — LEARN SPECIAL POPULATIONS
Explore:
• Pediatric emergencies
• Geriatric emergencies
• Obstetric emergencies
• Psychiatric emergencies
STAGE 11 — LEARN DISASTER AND PREHOSPITAL CARE
Study:
• Mass-casualty triage
• Disaster preparedness
• Prehospital care
• Transfer
• Handover
• Resource management
STAGE 12 — PRACTICE WITH SIMULATION
Use realistic scenarios involving:
• Cardiac arrest
• Shock
• Trauma
• Chest pain
• Stroke
• Anaphylaxis
• Respiratory distress
• Sepsis
• Altered mental status
• Mass-casualty incidents
Simulation allows learners to practice assessment, prioritization, communication, intervention, and reassessment in a controlled educational environment.
KEY NUMERICAL VALUES AND PROTOCOL NOTE
Some emergency-nursing topics involve important numerical values, ratios, measurements, or rates.
For example, current adult CPR guidance includes:
• 100–120 compressions per minute
• At least 5 cm (2 inches) compression depth for an average adult
• Avoiding compression depth greater than 6 cm (2.4 inches)
• 30:2 compression-to-ventilation ratio when no advanced airway is in place
• Approximately 10 breaths per minute (1 breath every 6 seconds) with continuous compressions when an advanced airway is in place
• Compressor rotation approximately every 2 minutes when multiple rescuers are available
These values are reference points for learning, not permanent rules for every clinical situation. Recommendations may vary according to patient age, condition, equipment, training level, institutional policy, and updated clinical guidelines.
Other emergency topics may involve glucose thresholds, pediatric weight-based calculations, medication doses, fluid volumes, oxygen targets, or other numerical values. These should always be verified against the most current applicable guideline or protocol before clinical use.
REFERENCE
American Heart Association — 2025 Guidelines for CPR & ECC:
https://cpr.heart.org/en/resuscitation-science/cpr-and-ecc-guidelines
WHO-ICRC Basic Emergency Care:
https://www.who.int/publications/i/item/basic-emergency-care-approach-to-the-acutely-ill-and-injured
These resources are useful for continuing education, but they do not replace formal clinical training, institutional protocols, supervision, or professional judgment.
FREE LEARNING RESOURCES
1. WORLD HEALTH ORGANIZATION — BASIC EMERGENCY CARE
Official Website: https://www.who.int/teams/integrated-health-services/clinical-services-and-systems/emergency-and-critical-care/bec
Description: WHO's Basic Emergency Care (BEC) is an open-access learning program developed with the ICRC and IFEM for first-contact health workers, including nurses. It teaches a systematic approach to acute illness and injury, including ABCDE assessment, trauma, breathing difficulty, shock, and altered mental status. The current program is available through WHO Academy, with a self-paced refresher format also available through OpenWHO.
2. WHO/ICRC BASIC EMERGENCY CARE PARTICIPANT WORKBOOK
Official Website: https://www.who.int/publications/i/item/basic-emergency-care-approach-to-the-acutely-ill-and-injured
Description: This open-access BEC manual provides structured learning on the systematic assessment and management of acutely ill and injured patients. The updated materials include ABCDE and SAMPLE approaches, trauma, breathing problems, shock, altered mental status, transfer, and handover.
3. WHO EMERGENCY CARE TOOLKIT
Official Website: https://www.who.int/teams/integrated-health-services/clinical-services-and-systems/emergency-and-critical-care/emergency-care-toolkit
Description: WHO's Emergency Care Toolkit is an open-access collection of interventions and tools designed to strengthen emergency-unit care, clinical capacity, clinical processes, quality of care, data collection, and referral systems.
4. WHO CLINICAL CHECKLISTS
Official Website: https://www.who.int/tools/clinical-checklists
Description: WHO provides clinical checklists for high-acuity care, including Trauma Care and Medical Emergency checklists, plus referral and interfacility transfer checklists. These resources can support structured emergency-care practice and simulation.
5. WHO EMERGENCY CARE
Official Website: https://www.who.int/teams/integrated-health-services/clinical-services-and-systems/emergency-care
Description: WHO's emergency-care portal brings together international resources covering emergency systems, acute care, prehospital care, mass-casualty management, clinical tools, and emergency-care programs.
6. WHO PREHOSPITAL TOOLKIT
Official Website: https://www.who.int/teams/integrated-health-services/clinical-services-and-systems/emergency-and-critical-care/prehospital-toolkit
Description: WHO's Prehospital Toolkit provides resources for strengthening prehospital emergency-care systems, including provider training, equipment and medication, operations, communication, governance, and quality improvement.
7. WHO MASS CASUALTY MANAGEMENT
Official Website: https://www.who.int/teams/integrated-health-services/clinical-services-and-systems/emergency-and-critical-care/mass-casualty-management
Description: This WHO learning program focuses on preparedness and response to mass-casualty incidents, including operational efficiency, safety, and management of sudden surges in patients.
8. WHO EMERGENCY CARE SAVES LIVES
Official Website: https://www.who.int/initiatives/emergency-care-saves-lives
Description: WHO's Emergency Care Saves Lives initiative provides international emergency-care information and highlights the importance of systematic, timely care for acutely ill and injured patients.
9. WHO ESSENTIAL RESOURCES FOR EMERGENCY, CRITICAL AND OPERATIVE CARE
Official Website: https://www.who.int/teams/integrated-health-services/clinical-services-and-systems/emergency--critical-and-operative-care/essential-resources-for-emergency--critical-and-operative-care
Description: This WHO resource collection brings together learning programs and clinical tools related to emergency, critical, operative, and prehospital care.
10. AMERICAN HEART ASSOCIATION — BASIC LIFE SUPPORT
Official Website: https://cpr.heart.org/
Description: The American Heart Association provides resuscitation education and healthcare-provider training resources, including Basic Life Support. Current AHA course materials and requirements should always be checked before enrolling.
11. AMERICAN HEART ASSOCIATION — ADVANCED CARDIOVASCULAR LIFE SUPPORT
Official Website: https://cpr.heart.org/en/cpr-courses-and-kits/healthcare-professional/acls
Description: AHA's ACLS program provides advanced cardiovascular life-support training through classroom and blended learning options. Course completion requirements and availability vary by course and training center.
12. AMERICAN HEART ASSOCIATION — CPR AND FIRST AID RESOURCES
Official Website: https://cpr.heart.org/
Description: AHA provides CPR, first-aid, BLS, ACLS, and other resuscitation-related educational resources. Its training centers provide opportunities for hands-on skills training where available.
13. AMERICAN HEART ASSOCIATION — CPR & FIRST AID APPS
Official Website: https://cpr.heart.org/en/resources/cpr-first-aid-apps-portal
Description: AHA provides digital resources and apps supporting CPR, first aid, ACLS, PALS, and related emergency-care learning. Some resources are free while specific clinical apps or courses may require payment.
14. WORLD HEALTH ORGANIZATION — EMERGENCY CAPACITY-BUILDING GUIDANCE
Official Website: https://www.who.int/publications/i/item/9789240099630
Description: This WHO guidance addresses just-in-time learning and capacity-building for health emergencies, helping organizations and health professionals prepare for and respond to emergencies.
15. WHO HEALTH SECURITY LEARNING PLATFORM
Official Website: https://extranet.who.int/hslp/
Description: WHO's Health Security Learning Platform provides online learning resources related to health emergencies and preparedness. Available courses and access requirements may change over time.
ESSENTIAL TOOLS
Useful emergency nursing study tools include:
• ABCDE assessment guides
• SAMPLE history templates
• Triage references
• Emergency medication references
• ECG interpretation resources
• Resuscitation algorithms
• BLS and ACLS materials
• Trauma checklists
• Emergency-care checklists
• SBAR handover templates
• Clinical calculators
• Drug-interaction references
• Toxicology references
• Simulation scenarios
• Nursing care plans
• Emergency documentation templates
• Patient assessment forms
5. PREPLY Official Website: https://preply.com/
Brief Description: Preply is an online learning platform that connects students with tutors for personalized one-on-one lessons, especially for learning languages and communication skills.
COMMON MISTAKES TO AVOID
• Treating patients strictly in arrival order instead of according to clinical urgency
• Focusing on a diagnosis before addressing immediate threats to life
• Skipping the primary assessment
• Failing to reassess after an intervention
• Ignoring abnormal vital-sign trends
• Underestimating respiratory distress
• Missing early signs of shock
• Assuming altered mental status is purely psychiatric
• Delaying escalation when a patient deteriorates
• Forgetting allergy verification
• Administering medications without appropriate checks
• Poor documentation
• Incomplete handover
• Ignoring infection-prevention precautions
• Failing to consider patient dignity during emergency procedures
• Attempting procedures outside one's scope of practice
• Relying on outdated emergency protocols
• Treating learning resources as substitutes for supervised clinical training
FREQUENTLY ASKED QUESTIONS (FAQ)
Q: What is emergency nursing?
A: Emergency nursing is the specialized nursing care of patients experiencing acute illness, injury, or other conditions requiring rapid assessment, stabilization, monitoring, and treatment.
Q: What should a beginner learn first?
A: Start with patient assessment, vital signs, triage, ABCDE assessment, SAMPLE history, basic life support, emergency communication, and recognition of common life-threatening conditions.
Q: What is the ABCDE approach?
A: ABCDE is a systematic assessment framework covering Airway, Breathing, Circulation, Disability, and Exposure. It helps clinicians identify immediate threats to life and prioritize care.
Q: What is triage?
A: Triage is the process of prioritizing patients according to the urgency and severity of their condition rather than simply according to arrival time.
Q: Is emergency nursing only about trauma?
A: No. Emergency nurses care for both traumatic and medical emergencies, including cardiac, respiratory, neurological, infectious, metabolic, toxicological, psychiatric, pediatric, and obstetric emergencies.
Q: Why is reassessment important?
A: Emergency patients can deteriorate or improve rapidly. Reassessment helps determine whether an intervention worked and whether the patient's condition has changed.
Q: Do emergency nurses need BLS?
A: Emergency nurses commonly require resuscitation training appropriate to their role and employer. Specific certification requirements vary by workplace and jurisdiction.
Q: Is ACLS necessary for every nurse?
A: Not necessarily. Requirements depend on the nurse's role, clinical setting, employer, and jurisdiction. Nurses working in emergency, critical-care, or resuscitation environments may have specific ACLS requirements.
Q: What is the difference between emergency nursing and critical care nursing?
A: Emergency nursing emphasizes rapid assessment, stabilization, triage, and initial management of a wide variety of acute conditions. Critical care nursing generally focuses on continuous management of critically ill patients requiring intensive monitoring and advanced support. There is significant overlap between the two specialties.
Q: Can emergency nursing be learned entirely online?
A: Online learning is valuable for theory and preparation, but emergency nursing requires supervised clinical experience, simulation, and hands-on skills training. Online resources should complement rather than replace appropriate clinical education.
Q: What emergency nursing skills should beginners practice?
A: Beginners can study and, under appropriate supervision, practice patient assessment, vital signs, ABCDE assessment, triage concepts, ECG acquisition, IV therapy, medication safety, CPR, communication, documentation, and emergency handover.
CAREER OPPORTUNITIES
Emergency nursing knowledge can support career pathways such as:
• Emergency department nurse
• Trauma nurse
• Acute-care nurse
• Critical-care nurse
• Resuscitation nurse
• Prehospital or transport nurse
• Disaster-response nurse
• Flight or transport nurse
• Urgent-care nurse
• Emergency nurse educator
• Clinical nurse educator
• Nurse case manager
• Emergency preparedness specialist
• Disaster-response healthcare worker
• Emergency nursing researcher
• Advanced practice emergency nurse where applicable
FINAL THOUGHTS
Emergency nursing is built around one central principle:
Recognize danger early, prioritize correctly, act safely, and reassess continuously.
A strong emergency nurse does not simply memorize emergency diagnoses.
They learn how to recognize patterns.
They know how to assess the airway and breathing.
They recognize poor circulation.
They notice neurological changes.
They identify abnormal vital-sign trends.
They communicate concerns clearly.
They understand when to escalate.
And they continue reassessing the patient after every important intervention.
For beginners, the best foundation is to master ABCDE assessment, triage, vital signs, basic life support, emergency communication, and recognition of common time-sensitive conditions.
WHO's Basic Emergency Care program is particularly valuable because it was specifically developed for first-contact healthcare workers, including nurses, and provides a systematic approach to acute illness and injury.
Emergency nursing is challenging, but its core philosophy is straightforward:
ASSESS.
PRIORITIZE.
INTERVENE.
REASSESS.
ESCALATE.
That mindset can become one of the most valuable foundations for safe acute-care nursing.
HARPER RECOMMENDATION
Harper recommends learning emergency nursing in the following sequence:
NURSING FUNDAMENTALS
↓
VITAL SIGNS & PATIENT ASSESSMENT
↓
TRIAGE
↓
ABCDE PRIMARY ASSESSMENT
↓
SAMPLE HISTORY
↓
BLS & RESUSCITATION
↓
COMMON MEDICAL EMERGENCIES
↓
TRAUMA NURSING
↓
ECG & CARDIAC EMERGENCIES
↓
IV THERAPY & EMERGENCY MEDICATIONS
↓
PEDIATRIC, GERIATRIC & OBSTETRIC EMERGENCIES
↓
PSYCHIATRIC EMERGENCIES
↓
DISASTER & MASS-CASUALTY CARE
↓
PREHOSPITAL & PATIENT TRANSFER
↓
SIMULATION & SUPERVISED CLINICAL PRACTICE
For free foundational study, start with WHO's Basic Emergency Care resources, then use current resuscitation resources from the American Heart Association or the appropriate resuscitation organization for your clinical setting.
Most importantly, remember that emergency-care knowledge changes over time. Always use current institutional protocols, professional guidelines, medication references, and supervised clinical training when applying emergency-care knowledge to real patients.
DISCLAIMER
DISCLAIMER: The information provided in this article is for educational and informational purposes only. Course availability, features, pricing, certificates, and platform content may change over time. Readers are encouraged to visit each platform's official website for the most current information. Unless otherwise stated, HarperHoleLearning is not affiliated with, endorsed by, or sponsored by any of the learning platforms, organizations, or companies mentioned in this article. Any trademarks, logos, and brand names remain the property of their respective owners.
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CLOSING
Thank you for reading HarperHoleLearning.
We hope this guide helps you develop a strong foundation in emergency nursing and become more confident in recognizing, assessing, and responding to acute patient needs.
Keep learning.
Keep caring.
Keep growing.
Learn. Grow. Succeed.
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