Patho psychology of Cardiogenic Shock
When a critical mass of ventricular myocardium becomes ischemic or necrotic, the ventricular pump fails, and there is a decrease in stroke volume and cardiac output. Decreased stroke volume causes increased filling pressures and wall tension for the left ventricle, with a corresponding increase in myocardial oxygen demand. The increased filling pressures are reflected back into the left atrium and the pulmonary vasculature, leading to vascular congestion and pulmonary oedema with impaired gas exchange.
The acute decrease in cardiac output can