Shock Recognition and Management for EMS
The four types of shock, the compensated-to-decompensated timeline, and the field interventions that keep patients alive to the ED.
April 16, 2026 · 9 min read
Shock is inadequate tissue perfusion. Every scenario on the NREMT where the patient is pale, cool, and tachycardic is testing whether you recognize compensated shock before it becomes irreversible.
The four types
- Hypovolemic — blood or fluid loss. Fix the leak, replace volume.
- Cardiogenic — pump failure. Careful with fluids; may need pressors and rapid transport.
- Distributive — sepsis, anaphylaxis, neurogenic. Fluids and cause-specific meds (epi for anaphylaxis).
- Obstructive — tension pneumothorax, cardiac tamponade, PE. Fix the obstruction (needle decompression, etc.).
Compensated vs decompensated
Compensated: normal or slightly low BP, elevated HR, narrowing pulse pressure, anxious, pale/cool. Decompensated: hypotension, altered mental status, weak/absent peripheral pulses. Kids compensate longer and crash faster.
Field priorities
- Control obvious bleeding.
- Airway and high-flow oxygen.
- Position — supine, keep warm (hypothermia worsens coagulopathy).
- IV/IO access and appropriate fluids per your protocol.
- Rapid transport to the appropriate trauma or medical center.
Never trust a normal blood pressure in a patient who looks like they're in shock. The number is the last thing to fall.
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