RT Journal Article SR Electronic T1 Pansystolic murmur in the newborn: tricuspid regurgitation versus ventricular septal defect. JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 1172 OP 1174 DO 10.1136/adc.63.10_Spec_No.1172 VO 63 IS 10 Spec No A1 Kelley, J R A1 Guntheroth, W G YR 1988 UL http://adc.bmj.com/content/63/10_Spec_No/1172.abstract AB Neonates with a pansystolic murmur who had Doppler echocardiography were reviewed. Ten infants had tricuspid regurgitation (detected at a mean age of 25 hours), 12 had a ventricular septal defect (detected at 65 hours), and seven had both. Tricuspid regurgitation is the more likely cause of a pansystolic murmur at the lower left sternal border in the first day of life.