Second Heart Sound - Physiologically Split #1 - case

During normal breathing, the timing between the aortic and pulmonic components of the second heart sound varies. This causes the second heart sound to be split. Maximum splitting occurs at peak inspiration. In the example you are hearing the splitting of the second heart sound is 60 milliseconds at peak inspiration and zero splitting at peak expiration.

Listen

patient torso with stethoscope chestpiece
patient position during auscultation
The patient's position should be supine.

static waveform for 9

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static waveform for 9


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