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Continuous murmur in a newborn with patient with a coronary artery fistula

Continuous murmur in a newborn with patient with a coronary artery fistula
Phonocardiogram obtained in a 4-day-old infant with a coronary artery fistula from the left main coronary artery to the left atrial appendage. The recording was made at the left midsternal border and demonstrates a continuous murmur.
S1: first heart sound; S2: second heart sound; P2: pulmonic valve closure sound.
Graphic 104804 Version 2.0