Which of the following describes a typical response to a transplanted heart physiology?

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Multiple Choice

Which of the following describes a typical response to a transplanted heart physiology?

Explanation:
A transplanted heart is denervated, so it loses autonomic (parasympathetic and sympathetic) input. Without parasympathetic braking, the heart’s baseline rate sits near its intrinsic pacemaker rate, around 100 beats per minute, which shows up as a resting tachycardia. Over time some reinnervation can occur, but most patients still have a higher resting heart rate and a blunted, slower ability to increase rate with activity. That’s why the typical description is that the transplanted heart is commonly tachycardic at rest.

A transplanted heart is denervated, so it loses autonomic (parasympathetic and sympathetic) input. Without parasympathetic braking, the heart’s baseline rate sits near its intrinsic pacemaker rate, around 100 beats per minute, which shows up as a resting tachycardia. Over time some reinnervation can occur, but most patients still have a higher resting heart rate and a blunted, slower ability to increase rate with activity. That’s why the typical description is that the transplanted heart is commonly tachycardic at rest.

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