The auscultation point for the pulmonary valve is at which interspace?

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Multiple Choice

The auscultation point for the pulmonary valve is at which interspace?

Explanation:
The key idea is knowing where each heart valve is best heard on the chest wall. The pulmonary valve lies at the left upper sternal border, in the left second intercostal space. That location is where sounds and murmurs from the pulmonic valve are most audible, because the valve sits adjacent to the chest wall there as it opens into the pulmonary trunk. For context, the aortic valve is best heard at the right second intercostal space, the tricuspid valve along the left lower sternal border around the 4th intercostal space, and the mitral valve at the apex (left 5th intercostal space, midclavicular line).

The key idea is knowing where each heart valve is best heard on the chest wall. The pulmonary valve lies at the left upper sternal border, in the left second intercostal space. That location is where sounds and murmurs from the pulmonic valve are most audible, because the valve sits adjacent to the chest wall there as it opens into the pulmonary trunk.

For context, the aortic valve is best heard at the right second intercostal space, the tricuspid valve along the left lower sternal border around the 4th intercostal space, and the mitral valve at the apex (left 5th intercostal space, midclavicular line).

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