Hypovolemic — the tank is empty: cool, clamped, flat neck veins.
Before you read
Test yourself first: 5 questions
Question 1 of 5
A patient is hypotensive, febrile, with warm skin and a rate of 118. The shock category is:
Answer: A. Fever with warm skin and hypotension is distributive — the vasculature has dilated so the same volume no longer fills it. Hypovolemic and cardiogenic shock both present cool and clamped down, and obstructive shock adds a mechanical sign such as distended necks or absent breath sounds.
Question 2 of 5
You are treating a STEMI patient who suddenly becomes unresponsive; the monitor shows ventricular fibrillation. Your partner has the defibrillator ready. What is the FIRST action?
Answer: A. A witnessed, monitored VF arrest with a defibrillator at hand is shocked immediately, followed by compressions without a pulse check. Drugs come after shocks and CPR, a prolonged CPR period before the first shock only delays definitive therapy here, and synchronization cannot work in VF because there is no QRS to sense.
Question 3 of 5
A diver struck his head in shallow water. He has no movement below the shoulders, warm dry skin, a heart rate of 52 and a pressure of 78/40. Which type of shock is most likely?
Answer: A. A high cervical cord injury interrupts sympathetic outflow, causing vasodilation (warm, dry skin) and unopposed vagal tone (bradycardia) alongside hypotension. Hemorrhagic shock produces the opposite — tachycardia and cool, clammy skin. Neurogenic shock remains a diagnosis of exclusion, so hidden bleeding must still be sought.
Question 4 of 5
A 26-year-old woman has sudden lower abdominal pain, shoulder-tip pain, dizziness on standing, and a missed period. HR 124, BP 92/60. Which impression most needs to be addressed?
Answer: A. A woman of childbearing age with abdominal pain, a missed period, referred shoulder pain from diaphragmatic irritation by blood, and signs of shock has a ruptured ectopic pregnancy until proven otherwise. Appendicitis rarely produces early shock, and an ovarian cyst or urinary infection does not explain the hemodynamic picture. The priority is shock management and rapid transport.
Question 5 of 5
Two IV attempts have failed in a 2-year-old in decompensated shock. The best next step for vascular access is:
Answer: A. In a critically ill child, IO access is fast, reliable, and accepts the same fluids and medications as a vein. Repeated IV attempts burn minutes a decompensating child does not have. Oral fluids are unsafe in an altered, shocked child, and deferring access leaves the shock untreated until arrival.
Keep the streak going with more questions like these, each with a full rationale.
Key points to remember
- Hypovolemic — the tank is empty: cool, clamped, flat neck veins.
- Distributive — the tank has widened: warm, flushed, often febrile.
- Cardiogenic — the pump has failed: cool, often with crackles.
- Obstructive — something blocks flow: distended necks, a mechanical sign.
- Compensated shock — the body is still holding blood pressure: rising heart rate, cool pale skin, delayed capillary refill and anxiety, with a normal pressure. Treat it now; a normal reading is not reassurance.
- Decompensated shock — compensation is failing: blood pressure falls, mental status declines and peripheral pulses weaken. In children, low blood pressure is a late sign.
Field priorities
- Sort with skin plus neck veins before reaching for a cause.
- In uncontrolled bleeding, target perfusion rather than a normal pressure.
Coaching the patient
- Cool and clamped is the default; warm shock is the one that surprises people.
Red flags: act now
- Distended necks with hypotension
- Warm, flushed skin with fever and hypotension
Shock Categories: FAQs
What are the priority actions for Shock Categories in the field?
Sort with skin plus neck veins before reaching for a cause. In uncontrolled bleeding, target perfusion rather than a normal pressure.
What findings in Shock Categories change your plan or your transport decision?
Distended necks with hypotension. Warm, flushed skin with fever and hypotension.
What do I need to know about Shock Categories for the NREMT?
Hypovolemic — the tank is empty: cool, clamped, flat neck veins. Distributive — the tank has widened: warm, flushed, often febrile. Cardiogenic — the pump has failed: cool, often with crackles. Obstructive — something blocks flow: distended necks, a mechanical sign.
What should the crew communicate or document for Shock Categories?
Cool and clamped is the default; warm shock is the one that surprises people.
