Q:

A 67-year-old man with documented acute MI progresses in 24 hours to cardiogenic shock. The following is/are true:

waelhammad
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2022-12-10
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A 67-year-old man with documented acute MI progresses in 24 hours to cardiogenic shock. The following is/are true:

  1. The mortality rate for cardiogenic shock after acute MI is increased more than 10 fold in comparison to no shock
  2. Age, ejection fraction, MI size and previous MI serve as predictors of cardiogenic shock
  3. Acute loss of more than 20% of myocardium frequently results in cardiogenic shock and death
  4. Emergency revascularization is contraindicated for the MI patient in cardiogenic shock
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waelhammad
2022-12-10
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a. The mortality rate for cardiogenic shock after acute MI is increased more than 10 fold in comparison to no shock

b. Age, ejection fraction, MI size and previous MI serve as predictors of cardiogenic shock

Cardiogenic shock is unusual after acute MI but increases the mortality rate from 4% to 65%. All of the risk factors described plus a history of diabetes mellitus can predict cardiogenic shock. The volume of myocardium lost acutely that is associated with shock is 40%. Recent studies suggest that emergency coronary bypass can be used within 18 hours of shock to reduce the mortality rate to 7%. 

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