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Cardiogenic Shock

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Question: What is the difference between Heart Faliure and Cardiogenic Shock? By definition, shock is a state in which the perfusion is not adequate to maintain the metabolic needs of the bodys cells, if the underlying disease affects the myocardium then the condition is called cardiogenic shock since it is cardiogenic in origin. Heart faliure is defined in my USMLE book as "inability of the heart to maintain an adequate output to meet the body's metabolic needs" What is the difference between the two?

Answer: The main thing would be the timeframe in which they occur. Heart failure is usually over a long period of time, like if someone has uncontrolled high blood pressure, their heart is working hard to push the blood around the body. After years of this, it becomes weaker and weaker. This can happen from fluid overload, high blood pressure, drugs, and many other things. Cardiogenic shock is something that happens over a short period of time. The heart is put into shock by some sort of trauma, like from an arrhythmia or heart attack. Another big difference is some of their causes. Just look up each in wikipedia and you'll find a lot of info on them.

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