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NREMT Advanced EMT

Category - Cardiology

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What is stroke volume determined by?

Preload
Afterload
Contractile force
All of the above

Explanation

Answer - D - Stroke volume is determined by preload, afterload, and contractile force. The amount of blood ejected by the heart at one contraction is referred to as the stroke volume. Preload can be increased by increasing venous return, by increasing the contractile force of the heart, and by decreasing the afterload.

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