The patient should sit up for back auscultation and then lean forward to allow auscultation of aortic and pulmonary diastolic murmurs or pericardial rub.
They are divided into systolic and diastolic children. In most cases, only the first (S1) and second (S2) heart sounds are heard. They are children of high frequency and celebrate the mitral and triple characteristics.
With this information, we can conclude that s1 and s2 are the first (S1) and second (S2) heart sounds are heard
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