Medical Diagnosis
Cardiogenic shock is a term used to describe the heart’s inability to supply enough blood to the organs of the body. The heart becomes unable to pump enough volume of blood to meet the body’s demand creating a state of organ hypoperfusion (Goldman, 2010). If left uncorrected cardiogenic shock will result in total circulatory collapse and death. Estimates of mortality related to cardiogenic shock are 50% making this one of the most challenging types of shock to treat (Sole, 2009). However, advancements in diagnoses and treatment over the years have greatly increased the survivability of cardiogenic shock.
There are numerous conditions that contribute to cardiogenic shock however; acute myocardial infarction is the leading etiology (Sole, 2009). The ischemic event associated with an extensive myocardial infarction damages the heart muscle limiting the pumping action and decreasing cardiac output. Individuals with infarctions involving greater than 40% of the left ventricle are at the highest risk for developing cardiogenic shock (Gulanick, 2011). Only 10-19% of patients develop cardiogenic shock at the onset of myocardial infarction. The majority of cases of cardiogenic shock occur within the subsequent 48 hours commonly due to reinfarction (Goldman, 2010). Other causes of cardiogenic shock include left ventricular failure, dysrhythmias, myopathies including valves, cardiac tamponade, pericarditis, pulmonary hypertension and pulmonary embolism (Ignatavicius, 2010).
Pathophysiology
Cardiogenic shock has a downward spiraling pathophysiology that ultimately leads to hypoxemia and
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