TY - CHAP M1 - Book, Section TI - Structural Heart Disease, Acyanotic A1 - Hay, Jr, William W. A1 - Levin, Myron J. A1 - Deterding, Robin R. A1 - Abzug, Mark J. PY - 2017 T2 - Quick Medical Diagnosis & Treatment Pediatrics AB - Newborn infants who present with serious acyanotic heart disease usually have heart failure secondary to left-sided outflow tract obstructionInfants with left-to-right shunt lesions (eg, ventricular septal defect) may have murmurs in the newborn period, but clinical symptoms do not occur until pulmonary vascular resistance drops enough to cause significant shunting and subsequent heart failure (usually at 3–4 weeks of age) SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/24 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1145458833 ER -