Please provide 20 quiz questions covering the different types, pathophysiology, and management of shock.

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20 Quiz Questions on Shock

Definitions and Classification

  1. What are the four basic mechanisms of shock according to the 2025 ESICM guidelines?

    • Answer: Hypovolemic, cardiogenic, obstructive, and distributive shock 1

  2. What is the unifying pathological process in all types of shock?

    • Answer: Altered tissue perfusion resulting in decreased oxygen supply to tissues and cellular oxygen uptake, associated with increased lactate levels and organ dysfunction 1

  3. What is the typical short-term mortality range for patients with shock?

    • Answer: 20-50% 1

  4. Which type of shock is most commonly encountered in critical care?

    • Answer: Distributive shock (usually septic) 2

Diagnosis and Monitoring

  1. What is the recommended first-line imaging modality to assess the type of shock?

    • Answer: Echocardiography 1

  2. When should dynamic variables be used instead of static markers of preload?

    • Answer: Dynamic variables should be used over static markers for predicting fluid responsiveness when applicable 1

  3. In which patients should cardiac output and/or stroke volume be monitored?

    • Answer: Patients who do not respond to initial therapy 1

  4. When is arterial catheter monitoring indicated for arterial pressure?

    • Answer: In shock that is not responsive to initial therapy and/or requiring vasopressor infusion 1

Hemodynamic Management

  1. What is the recommended initial MAP target during early resuscitation of septic shock?

    • Answer: 65 mmHg 3

  2. What is the first-line vasoactive drug recommended for distributive shock after appropriate fluid resuscitation?

    • Answer: Norepinephrine 3

  3. When should vasopressin be considered in septic shock management?

    • Answer: If hypotension persists despite norepinephrine, vasopressin (up to 0.03 U/min) should be added to reduce norepinephrine requirements 3

  4. In cardiogenic shock with persistent hypotension and tachycardia, which vasopressor is advised?

    • Answer: Norepinephrine 3

Specific Shock Types

  1. What are the therapeutic goals in hemorrhagic shock?

    • Answer: Restoration of blood volume and definitive control of bleeding 3

  2. Which inotropic agents are recommended as first-line in acute heart failure (excluding pre-revascularization MI)?

    • Answer: Dobutamine, dopamine, or phosphodiesterase III inhibitors 3

  3. When is dopamine specifically recommended in septic shock?

    • Answer: Only in hypotensive patients with bradycardia or low risk for tachycardia 3

  4. When should phenylephrine or vasopressin be used in cardiogenic shock?

    • Answer: In specific afterload-dependent states such as aortic stenosis or mitral stenosis 3

Pathophysiology

  1. What additional microcirculatory abnormality may further impair tissue perfusion specifically in septic shock?

    • Answer: Microcirculatory abnormalities beyond altered tissue perfusion 1

  2. What characterizes distributive shock differently from hypovolemic, cardiogenic, and obstructive shock?

    • Answer: Distributive shock involves vasoplegia, shunting, decreased oxygen extraction, and variable cardiac output (low, normal, or high), whereas the other types result from decreased cardiac output 3

Clinical Assessment

  1. What prognostic significance do echocardiographically defined phenotypes have in shock?

    • Answer: Left and right ventricular dysfunction phenotypes may be of prognostic significance 1

  2. What therapeutic targets should be used to optimize end-organ perfusion when titrating vasoactive drugs?

    • Answer: Urinary output, serum lactate clearance, and mean arterial pressure reflecting tissue perfusion 3

References

3
Guideline

a global perspective on vasoactive agents in shock.

Intensive Care Medicine, 2018

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