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A VSD can also form a few days after a myocardial infarction [8] (heart attack) due to mechanical tearing of the septal wall, before scar tissue forms, when macrophages start remodeling the dead heart tissue. A congenital VSD can result from a disturbance in the morphogenesis of the heart in its embryonic stages.
When holes form between the chambers, as in AVSD, the pools can mix. Consequently, arterial blood supplies become less oxygenated than normal, causing ischemia and cyanosis in distal tissues. [ 3 ] To compensate, the heart must pump a larger volume of blood to deliver enough oxygen, leading to cardiac enlargement and hypertrophy .
A variable-speed drive (VSD) air compressor is an air compressor that takes advantage of variable-speed drive technology. This type of compressor uses a special drive to control the speed ( RPM ) of the unit, which in turn saves energy compared to a fixed speed equivalent. [ 1 ]
VSD: ventricular septal defect: VSR: ventricular septal rupture (see myocardial rupture) VSS: vital signs stable visual snow syndrome VT: ventricular tachycardia verotoxin VTE: venous thromboembolism: VTEC: verotoxin-producing Escherichia coli, also known as enterohaemorrhagic E. coli: VUR: vesicoureteral reflux: VWD: ventral wall defect Von ...
[58]: 153 The repair consists of two main steps: closure of the VSD with a patch and reconstruction of the right ventricular outflow tract. [ 59 ] This open-heart surgery is designed to relieve the right ventricular outflow tract stenosis by careful resection of muscle and to repair the VSD.
A A&TWF – Acquisition and technology work force a – Army AA – Assembly area AA – Anti-aircraft AA – Aegis ashore AAA – Anti-aircraft artillery "Triple A" AAAV – Advanced Amphibious Assault Vehicle AAC – Army Air Corps AAD – Armored amphibious dozer AADC – Area air defense commander AAE – Army acquisition executive AAG – Anti-aircraft gun AAK – Appliqué armor kit (US ...
The Vaccine Safety Datalink Project (VSD) was established in 1990 by the United States Centers for Disease Control and Prevention (CDC) to study the adverse effects of vaccines. Four large health maintenance organizations , including Kaiser Permanente , were initially recruited to provide the CDC with medical data on vaccination histories ...
VSD may refer to: .vsd, a file extension for Microsoft Visio diagrams; VSD (French magazine) (Vendredi Samedi Dimanche; i.e. "Friday Saturday Sunday"), a French weekly news magazine; Vaccine Safety Datalink, a Centers for Disease Control database containing vaccination and health records of over 7 million Americans