TY - CHAP M1 - Book, Section TI - Patent Ductus Arteriosus A1 - Reese, Jeff A1 - Cotton, Robert B. A2 - Stevenson, David K. A2 - Cohen, Ronald S. A2 - Sunshine, Philip Y1 - 2015 N1 - T2 - Neonatology: Clinical Practice and Procedures AB - The ductus arteriosus is a central vascular shunt that interconnects the pulmonary artery and aorta during fetal life. A ductus or similar structure is present in mammals and most other vertebrates and is embryologically derived from the distal portion of the left sixth branchial arch.1,2 As a result of the relatively large size of the ductus and the high resistance of the pulmonary vascular circuit in utero, approximately 90% of right ventricular output flows though the ductus and into the systemic circulation, thus bypassing the unaerated fetal lung. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1109793090 ER -