Home › Guides › EMT shock & bleeding
NREMT — EMT
EMT Shock & Bleeding Control Practice Questions
Shock — inadequate tissue perfusion — is the single concept the EMT exam returns to most often, because every serious call eventually becomes a perfusion question. The exam expects you to (1) control external hemorrhage decisively, (2) recognize shock early, while blood pressure still looks fine, and (3) categorize it well enough to choose the right transport and treatment posture.
This guide drills the four shock categories with field-recognizable signatures, the bleeding-control ladder, and the question patterns that separate 'knows the words' from 'sees the patient.' For a broader trauma review, pair it with our NREMT trauma guide.
The four categories, field edition
Hypovolemic — volume loss (bleeding, burns, vomiting/diarrhea/dehydration): tachycardia, pale cool clammy skin, flat neck veins, anxiety → late hypotension. Cardiogenic — pump failure (MI, heart failure): shock signs plus a cardiac story — chest pain, dyspnea, crackles, possibly JVD; the one category where aggressive position changes and (at ALS levels) fluid loading can hurt. Distributive — pipes too wide: septic (fever/infection source, warm early then cold late), anaphylactic (exposure + hives + airway involvement), neurogenic (spinal injury: hypotension with normal or slow heart rate and warm, dry skin below the lesion — the sympathetic system can't vasoconstrict or accelerate the heart). Obstructive — flow blocked: tension pneumothorax (unilateral absent breath sounds, JVD, deviation late) and cardiac tamponade (muffled tones, JVD, narrowing pulse pressure).
The exam's favorite discriminators: neurogenic's missing tachycardia and dry warm skin versus hypovolemia's cold clamminess; sepsis as the shock with a fever history; and the obstructive causes as 'shock with breath-sound or heart-sound findings' that point at a mechanical fix above your level — meaning your job is recognition and the fastest appropriate transport with ALS.
Bleeding control and the EMT shock bundle
The ladder: direct pressure (most bleeding stops here when pressure is firm, focused, and sustained — gauze plus gloved pressure, adding layers rather than peeling soaked ones); tourniquet for life-threatening extremity hemorrhage that pressure doesn't control or can't practically control — applied tight enough to stop arterial flow, time recorded, never covered or loosened; wound packing/hemostatic gauze per protocol for junctional sites (groin, axilla, neck base) with sustained pressure afterward; pressure dressings to maintain control for transport. Internal bleeding gets recognition (mechanism, tender rigid abdomen, pelvic instability, shock without external source) and speed — there is no field fix.
The EMT shock bundle, in order: control hemorrhage; airway/oxygenation (titrated O2, assist ventilation if inadequate); keep the patient supine (no Trendelenburg — it's been retired from modern teaching); prevent heat loss aggressively; nothing by mouth; rapid transport with early ALS and trauma-center notification; reassess every 5 minutes. Each element is testable, and 'keep them warm' plus 'go now' are the most under-selected correct answers.
Practice questions with answers & rationales
Q1. Define shock in one sentence the exam will accept, and name the three body systems that produce its early signs.
Answer: Shock is inadequate tissue perfusion — oxygen delivery failing to meet cellular demand. Early signs come from the compensation systems: cardiovascular (tachycardia, weak peripheral pulses), skin (pale, cool, clammy — circulation shunted to the core), and brain (anxiety, restlessness, 'a feeling of doom' — the most perfusion-sensitive organ whispering first). Blood pressure is deliberately absent from that list: it's the last domino, not the first.
Q2. Firm direct pressure for several minutes hasn't controlled heavy bleeding from a forearm laceration. The patient is getting pale. Next step?
Answer: Tourniquet — proximal to the wound, tightened until bleeding stops completely, time recorded and visible. Continuing to stack gauze on a failing strategy while the patient pales is the planted error; modern teaching moves to the tourniquet early for life-threatening extremity hemorrhage. Then: shock bundle (warmth, oxygen as indicated, supine, rapid transport) and reassess the wound — without ever loosening the tourniquet.
Q3. A patient with a fractured pelvis from a fall has HR 128, BP 88/60, cold mottled skin, and no external bleeding. Where's the blood, and what can you do?
Answer: Internally — pelvic fractures can sequester liters in the retroperitoneum. EMT actions: minimal movement (logical, gentle handling; pelvic binder per protocol if trained/equipped), oxygen, aggressive warmth, supine, and the fastest transport to a trauma center with early notification — this patient needs blood and a surgeon/IR suite, not scene time. Recognizing 'shock without a puddle' as internal hemorrhage is the tested skill.
Q4. Compare the expected vitals of hypovolemic shock and neurogenic shock, and explain the physiologic reason for the difference.
Answer: Hypovolemic: tachycardic, pale/cool/clammy, progressively hypotensive. Neurogenic (high spinal injury): hypotensive but with a normal or slow pulse and warm, dry skin below the injury. Reason: shock signs like tachycardia and clamminess are sympathetic responses — and a cervical/high-thoracic cord injury disconnects the sympathetic outflow, so the body cannot vasoconstrict, sweat, or accelerate the heart. The 'shock without tachycardia' patient after trauma should make you think spine.
Q5. Why has Trendelenburg positioning disappeared from shock care, and what position is taught instead?
Answer: Head-down tilt doesn't produce meaningful sustained autotransfusion, and it compromises ventilation (abdominal contents against the diaphragm) and intracranial pressure. Modern teaching: supine, with warmth and rapid transport doing the actual work. Exam-wise, supine is the credited answer; Trendelenburg survives only as a distractor — and in very specific non-shock contexts like prolapsed-cord positioning.
Q6. Your shocky patient asks for water during a 25-minute transport. Why is the answer no?
Answer: Shock shunts blood from the gut (vomiting/aspiration risk — especially if mentation falls), and many of these patients are heading to emergency surgery where an empty stomach matters. Moisten lips if needed, explain why, and document. Small question, frequently tested, because it checks whether you understand where shock physiology and hospital destination intersect.
Q7. Which of these belongs first in your shock sequence: high-flow oxygen, controlling the spurting wound, or covering the patient with blankets?
Answer: Controlling the spurting wound — hemorrhage control leads the entire sequence (the X before ABC): oxygenating blood that's leaving the body accomplishes nothing. Then airway/oxygen, then warmth, supine position, and transport. Sequence questions like this are the exam's way of testing whether you understand that all interventions are not equal when the tank is draining.
Common mistakes to avoid
- Waiting for hypotension to call it shock — tachycardia plus skin signs plus anxiety is the early diagnosis.
- Peeling off blood-soaked dressings (add layers), tourniquets applied loosely, or loosened 'to check.'
- Missing neurogenic shock because the pulse isn't fast, or sepsis because the skin is warm.
- Choosing Trendelenburg or PASG-era distractors — supine, warm, and fast is the modern bundle.
- Forgetting hypothermia prevention; the cold trauma patient clots poorly and the exam knows it.
- Letting oxygen administration or splinting delay transport of a patient who needs an operating room.