<prompt> S2 is best appreciated in -3rd left intercostal space2nd right intercostal space4th left intercostal space5th left intercostal space  <response>: Ans. is a i.e., 3rd left intercostal space o Best areas to auscultate for both components of the second heart sound A2 and P2 are either the left sternal border at the level of second intercostal space Pulmonic area or the left sternal border at the level of third intercostal space Erb s point. 