You have been unable to hear normal S2 splitting in children up to this point. What technique will maximize your chances of hearing this phenomenon?

Question

Quizplus · Accepted Answer

S2 is made of aortic and pulmonic components. Of these, the pulmonic component is much softer and heard best over the pulmonic area. Even in the proper location, the pulmonic component may be difficult to hear with the diaphragm because it is a soft, low-pitched sound. For this reason, the bell should be used to listen for S2 splitting over the pulmonic area during inspiration, when splitting should be maximized. Breathing also changes heart rate more rapidly in children. One may think an arrhythmia is present until she notices that this rate change is related to the respiratory cycle.

You Have Been Unable to Hear Normal S2 Splitting in Children