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CSC Cardiac Nursing Subspecialty

Category - Problems

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Why is cardioplegia used during cardiac surgery?

It provides a bloodless field for surgery
Stopping the heart facilitates precise surgical technique
It reduces the oxygen demand of the heart by almost 90%
It allows the anesthetic medications to work on heart

Explanation

Answer: C - Cardioplegia is used to stop the heart; this reduces the oxygen demand of the heart nearly 90%.Hypothermia is also used to further reduce myocardial metabolism.

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