Unit 2: Primary Assessment
Primary Assessment & Life Threats
The primary assessment is one of the most important skills tested on the NREMT EMT certification exam. During this initial evaluation, EMTs must quickly recognize life-threatening conditions, assess a patient’s airway, breathing, and circulation, and determine whether immediate treatment or rapid transport is needed. This section of our free NREMT study guide covers these essential assessment skills, followed by five EMT practice questions to help reinforce your understanding.
Every patient requires a primary assessment, regardless of whether the emergency involves an illness or traumatic injury. The goal is to rapidly identify conditions that could cause death or serious harm if left untreated.
Unlike the secondary assessment, which involves a more detailed examination, the primary assessment focuses on identifying and managing immediate threats to life.
Forming a General Impression
The primary assessment begins with forming a general impression of the patient.
As you approach, observe the patient’s appearance, behavior, and level of distress. These observations help you determine whether the patient appears stable or critically ill.
Important observations include:
- Appearance: Does the patient appear seriously injured or ill?
- Breathing: Is the patient breathing normally or showing signs of respiratory distress?
- Skin: Is the skin pale, cool, clammy, or unusually discolored?
- Behavior: Is the patient alert, confused, restless, or unresponsive?
- Position: Is the patient lying motionless, sitting upright to breathe, or assuming another unusual position?
For example, a patient who is pale, sweating, and struggling to breathe should immediately raise concern for a serious medical emergency.
When approaching an alert patient, introduce yourself, explain that you are there to help, and obtain consent before providing care.
Assessing Level of Consciousness
The patient’s level of consciousness (LOC) helps EMTs evaluate brain function and recognize potentially serious medical conditions.
The AVPU scale provides a quick method for assessing responsiveness:
- A – Alert: The patient is awake and responds appropriately.
- V – Verbal: The patient responds to verbal stimulation.
- P – Pain: The patient responds only to an appropriate painful stimulus.
- U – Unresponsive: The patient does not respond to verbal or painful stimulation.
A patient who responds only to pain or is completely unresponsive requires immediate attention.
For alert patients, EMTs may also evaluate orientation using four categories:
- Person: Does the patient know who they are?
- Place: Does the patient know where they are?
- Time: Does the patient know the approximate date or time?
- Event: Does the patient understand what happened?
A patient who correctly answers questions in all four categories is described as alert and oriented × 4 (A&O × 4).
An altered level of consciousness may indicate a serious condition such as a stroke, low blood sugar, inadequate oxygenation, or shock.
Assessing Airway, Breathing, and Circulation
The primary assessment includes evaluating the patient’s airway, breathing, and circulation (ABCs).
Airway
Determine whether the patient’s airway is open and unobstructed. Listen for abnormal sounds such as snoring, gurgling, or stridor, which may indicate an airway problem.
A patient who cannot maintain an open airway requires immediate intervention.
Breathing
Evaluate the patient’s breathing rate, depth, and overall effectiveness.
Look for signs of inadequate breathing, including:
- Very slow, rapid, or irregular respirations.
- Shallow breathing or poor chest movement.
- Increased effort to breathe.
- Cyanosis or other signs of inadequate oxygenation.
Patients who are not breathing or are breathing inadequately require immediate respiratory support.
Circulation
Assess the patient’s pulse, skin condition, and signs of adequate blood circulation.
Look for:
- An absent, unusually rapid, or weak pulse.
- Pale, cool, or clammy skin.
- Signs of poor perfusion.
- Severe external bleeding.
Uncontrolled, life-threatening external bleeding must be addressed immediately, including when it is identified before the airway assessment.
Recognizing Immediate Life Threats
The primary assessment is designed to identify conditions requiring immediate treatment.
Examples of life-threatening conditions include:
- Airway obstruction.
- Respiratory arrest or inadequate breathing.
- Cardiac arrest.
- Severe, uncontrolled bleeding.
- Signs of shock.
- Severely altered or absent responsiveness.
When a life threat is identified, begin the appropriate intervention without delaying for a complete physical examination.
For example, if an unresponsive patient has no normal breathing and no pulse, immediately begin CPR and use an automated external defibrillator (AED) as soon as one is available.
Detailed treatment techniques are covered in later lessons.
Determining Patient Priority
After identifying and addressing immediate life threats, EMTs must determine the patient’s priority for treatment and transport.
High-priority patients may have:
- Severe difficulty breathing.
- Unresponsiveness or significantly altered mental status.
- Signs of shock or inadequate circulation.
- Uncontrolled bleeding.
- Other signs of a potentially life-threatening condition.
These patients generally require rapid intervention, prompt transport decisions, and sometimes additional resources or Advanced Life Support (ALS).
Stable patients may allow more time for history taking, vital signs, and a detailed secondary assessment.
Obtain relevant vital signs and diagnostic information as the patient’s condition allows, but do not delay critical interventions or necessary transport.
Key Tip
The purpose of the primary assessment is to find and manage life threats—not to complete a detailed examination. If you discover a critical airway, breathing, or circulation problem, address it immediately before continuing with the assessment.