Patent Ductus Arteriosus- normal speed 

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Heart sounds were recorded in four different areas: apex, left upper sternal border, left lower sternal border, and back. Notice the mid-systolic sound in the apex and LLSB recordings. The recording on the back was taken in the left scapular region.
Contributor: Michael Janjigian MD, New York University School of Medicine
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