Normal Heart Sounds

Second Heart Sound - Physiologically Split #1

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.

maneuver image
Maneuver:Supine
Chestpiece Position:Pulmonic
Chestpiece:Bell


This website is intended for use by medical professionals for educational purposes only. For medical care, contact a healthcare provider. Copyright 2017 © Medical Training and Simulation LLC. All Rights Reserved.

This website is intended for use by medical professionals for educational purposes only. For medical care, contact a healthcare provider. Copyright 2017 © Medical Training and Simulation LLC. All Rights Reserved.