Final answer:
Hypovolemic shock is caused by significant blood or fluid loss leading to reduced venous return and cardiac output, treated with fluid replacement and medications. Cardiogenic shock is due to the heart's impaired pumping ability, often following a myocardial infarction, treated with interventions to restore cardiac function.
Step-by-step explanation:
The mechanism of action (MOA) of hypovolemic shock involves a significant loss of blood volume, which can be due to hemorrhage or, in some cases, dehydration. This loss of volume leads to decreased venous return to the heart, reduced cardiac output, and ultimately impaired tissue perfusion and oxygenation. Symptoms include rapid heart rate, weak pulse, cool and clammy skin, hypothermia, and thirst. The primary treatment focuses on fluid replacement and vasoactive medications to restore blood pressure and volume.
In contrast, cardiogenic shock results from the heart's inability to pump blood effectively, commonly due to a myocardial infarction. Symptoms are similar to hypovolemic shock but additionally may include chest pain, dyspnea, and signs of pulmonary congestion. Treatment involves measures to improve cardiac function and may include drugs and interventions to relieve the infarction or mechanical assistance like ventricular assist devices.