In sustained PMI, through which heart sound does tapping continue?

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Multiple Choice

In sustained PMI, through which heart sound does tapping continue?

Explanation:
The key idea is that sustained PMI reflects a prolonged left ventricular systolic impulse. The impulse is felt from the start of systole (S1) all the way through to the end of systole, which ends with the second heart sound (S2). So tapping continues through the second heart sound. It would not extend into atrial contraction (diastole) or into the early diastolic S3 phase.

The key idea is that sustained PMI reflects a prolonged left ventricular systolic impulse. The impulse is felt from the start of systole (S1) all the way through to the end of systole, which ends with the second heart sound (S2). So tapping continues through the second heart sound. It would not extend into atrial contraction (diastole) or into the early diastolic S3 phase.

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