The first heart sound (S1) results from the closing of the mitral and tricuspid valves. The sound produced by the closure of the mitral valve is termed M1, and the sound produced by closure of the ...

Midsystolic murmurs — also known as systolic ejection murmurs, or SEM — include the murmurs of aortic stenosis, pulmonic stenosis, hypertrophic obstructive cardiomyopathy and atrial septal defects. A ...

My rationale for beginning at the mitral area is to compare the auscultatory findings with those previously obtained by percussion and palpation (see Nonauscultatory Cardiac Exam: Assessing the ...

Share on Pinterest Will we soon be able to use an app as an at-home stethoscope? Image credit: Sergey Narevskih/Stocksy. Researchers assessed the feasibility of using a smartphone’s inbuilt microphone ...