14. Cardiogenic shock: Causes and hemodynamics

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Revision as of 15:12, 7 February 2023 by Nikolas (talk | contribs) (Created page with "In cardiogenic shock the systolic BP is lower than 90 mmHg and the urine production is low. == Causes == * Acute myocardial infarction ** When more than 40% of myocardium is affected * Obstructive hypertrophic cardiomyopathy * Pericardial tamponade * End-stage of heart failure * Arrhythmias == Pathomechanism == End-diastolic volume and end-diastolic pressure will increase as the heart can’t pump out blood. The central venous pressure will also increase. {| class="wi...")
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In cardiogenic shock the systolic BP is lower than 90 mmHg and the urine production is low.

Causes

  • Acute myocardial infarction
    • When more than 40% of myocardium is affected
  • Obstructive hypertrophic cardiomyopathy
  • Pericardial tamponade
  • End-stage of heart failure
  • Arrhythmias

Pathomechanism

End-diastolic volume and end-diastolic pressure will increase as the heart can’t pump out blood. The central venous pressure will also increase.

EDV and EDp ↑
Central venous pressure ↑
Stroke volume ↓
Cardiac Output ↓
Blood pressure ↓
Heart rate ↑
Total peripheral resistance ↑ or normal
Blood volume Normal
Blood distribution Not normal
Circulatory velocity ↓