ICU · Resuscitation
Classification and management of shock
Also known as Types of shock · Shock classification · Cardiogenic, hypovolaemic, distributive, obstructive shock
Shock is a severe supply-demand oxygen mismatch with four types: hypovolaemic (fluid replacement), distributive (vasoconstrictors plus fluids), cardiogenic (drugs/surgery/intervention), obstructive (immediate life-saving intervention). Resuscitation targets: lactate clearance, MAP 65, dynamic fluid-responsiveness testing, balanced crystalloids, noradrenaline first-line.
Checked against its sources on 13 Oct 2026
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Target exams
Red flags
- Lactate elevated across shock states — track clearance (10% goal non-inferior to ScvO2 70%; 20% per 2 h goal cut adjusted mortality)
- MAP 65 is the standard target — SEPSISPAM showed no benefit of 80-85 over 65-70
- Anaphylaxis: prompt intramuscular adrenaline first-line (EAACI 2021)
- Obstructive shock needs an immediate life-saving intervention — fluids and vasopressors do not relieve obstruction
- Do NOT use protocolised EGDT with ScvO2 catheters — ProCESS/ARISE/ProMISe showed no benefit over usual care
Meet the patient
A 68-year-old man arrives grey, clammy, and hypotensive. His blood pressure is 82/50, his heart rate is 128, and his skin is cool to the touch. The central question is not whether he is in shock — it is which of the four compartments has failed, because each demands a different first intervention: fluid replacement, vasoconstrictors plus fluids, cardiac drugs or intervention, or relief of the obstruction.[1]
Classify the failed compartment at the bedside before reaching for any drug. The ESICM consensus frames the bedside questions as preload and fluid responsiveness, stroke volume or cardiac output, regional and microcirculatory markers — and 44 statements to diagnose, treat and monitor shock.[2]
References28ShowHide
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