ventricular decompression
Pronunciation: ven-TRIK-yuh-lar dee-kum-PRESH-un
Removal of air and blood from the cardiac ventricles during or after cardiopulmonary bypass to prevent ventricular distension.
Full Definition
Ventricular decompression refers to the process of removing air, blood, and other fluids from the cardiac ventricles during cardiac surgery to prevent ventricular distension and maintain myocardial protection. This is accomplished through various techniques including placement of ventricular vents, root vents, or direct aspiration through surgical incisions. Adequate decompression prevents myocardial stretching during cardioplegic arrest, reduces myocardial oxygen consumption, and facilitates surgical visualization. The procedure is particularly important during aortic valve surgery where blood can accumulate in the left ventricle due to aortic regurgitation. Medical editors should note that incomplete ventricular decompression can lead to poor myocardial protection and increased postoperative dysfunction.
Usage
Usage note: Distinguish from de-airing procedures, which focus specifically on air removal rather than fluid drainage.
In Context
- "A left ventricular vent was placed through the right superior pulmonary vein for optimal ventricular decompression." — operative report
- "Inadequate ventricular decompression during aortic valve replacement can compromise myocardial protection." — technical review