Shawn Kise BSN, RN

Variations in the S2 heart sound may present with a right or left bundle branch block. When there is a right bundle branch block, a widened splitting of the S2 heart sound may be heard. This is caused by the delayed closure of the pulmonic valve due to the right bundle branch block that gives a clear distinction of a widened S2 sound (Fauci et ... ................
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