septal defect


septal defect
a hole in the partition (septum) between the left and right halves of the heart. This abnormal communication is congenital due to an abnormality of heart development in the fetus. It may be found between the two atria (see atrial septal defect) or between the ventricles (see ventricular septal defect). A septal defect permits abnormal circulation of blood from the left side of the heart, where pressures are higher, to the right. This abnormal circulation is called a shunt and results in excessive blood flow through the lungs. Pulmonary hypertension develops and heart failure may occur with large shunts. A heart murmur is normally present. Large defects are closed surgically or by using percutaneous catheter techniques (see atrial septal defect) but small defects do not require treatment.

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  • septal defect — a hole in the partition (septum) between the left and right halves of the heart. This abnormal communication is congenital due to an abnormality of heart development in the fetus. It may be found between the two atria (see atrial septal defect)… …   Medical dictionary

  • septal defect — noun a congenital abnormality in the septum between the left and right sides of the heart • Hypernyms: ↑congenital heart defect • Hyponyms: ↑atrial septal defect, ↑ventricular septal defect …   Useful english dictionary

  • Septal defect, ventricular (VSD) — A hole in the septum (the wall) between the lower chambers of the heart (the ventricles). Ventricular Septal Defect is the most common type of heart malformation (congenital heart disease). At least 1 baby in every 500 is born with a VSD. A VSD… …   Medical dictionary

  • Septal defect, atrial (ASD) — A hole in the septum, the wall, between the atria, the upper chambers of the heart. Commonly called an ASD. ASDs are a major class of heart deformity that is present at birth (congenital cardiac malformation) …   Medical dictionary

  • Atrial septal defect — PFO redirects here. For the airport, see Paphos International Airport. Atrial septal defect Classification and external resources Heart of human embryo of about thirty five days ICD 10 …   Wikipedia

  • Ventricular septal defect — Infobox Disease Name = PAGENAME Caption = Echocardiographic image of a moderate ventricular septal defect in the mid muscular part of the septum. The trace in the lower left shows the flow during one complete cardiac cycle and the red mark the… …   Wikipedia

  • Atrioventricular septal defect — Classification and external resources ICD 10 Q21.2 ICD 9 745.6 …   Wikipedia

  • Ostium primum atrial septal defect — Classification and external resources Schemating drawing showing the location of different types of ASD, the view is into an opened right atrium. HV: right ventricle; VCS: superior caval vein; VCI: inferior caval vein; 1: upper sinus venosus… …   Wikipedia

  • ventricular septal defect — n a congenital defect in the interventricular septum abbr. VSD * * * a congenital cardiac anomaly in which there is persistent patency of the ventricular septum in either the muscular or fibrous (membranous) portions, most often due to failure of …   Medical dictionary

  • Дефект Перегородки (Septal Defect) — отверстие в перегородке, разделяющей правую и левую половины сердца, в результате чего имеется аномальное соединение между двумя половинами сердца. Обычно дефект является врожденным и бывает связан с нарушением развития сердца у плода. Различают… …   Медицинские термины