The nurse hears a murmur between the S₁ and S₂ heart sounds at the patient's left 5th intercostal space and midclavicular line. The best way to record this information is

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The S₁ sound is created by closure of the mitral and tricuspid valves and signifies the onset of ventricular systole. S₂ is caused by the closure of the aortic and pulmonic valves and signifies the onset of diastole. A murmur occurring between these two sounds is a systolic murmur. The mitral area is the intersection of the left 5th intercostal space and the midclavicular line. The aortic area is located at the 2nd intercostal space along the right sternal border. Erb's point is located at the 3rd intercostal space along the left sternal border. The tricuspid area is located at the 5th intercostal space along the left sternal border.

The Nurse Hears a Murmur Between the S1 and S2

The Nurse Hears a Murmur Between the S₁ and S₂