LVOT
Pronunciation: L-V-O-T
Also written as: LVOT — Left Ventricular Outflow Tract
Left ventricular outflow tract, the pathway through which blood exits the left ventricle toward the systemic circulation via the aorta.
Full Definition
The left ventricular outflow tract (LVOT) is the anatomical region through which oxygenated blood flows from the left ventricle to the systemic circulation. This area encompasses the subaortic region, aortic valve, and proximal ascending aorta. In pediatric cardiology, LVOT obstruction is a significant concern in various congenital heart diseases, including subaortic stenosis, aortic valve stenosis, and hypoplastic left heart syndrome. Assessment of LVOT dimensions and function is critical for surgical planning and monitoring of disease progression. Obstruction may occur at multiple levels and can be dynamic or fixed, requiring different therapeutic approaches ranging from catheter intervention to complex surgical reconstruction.
Usage
Usage note: Distinguish carefully from RVOT; specify level of obstruction (subvalvar, valvar, supravalvar) when applicable.
In Context
- "LVOT obstruction was relieved through subaortic membrane resection." — Operative report
- "Serial echocardiograms monitor for progressive LVOT narrowing." — Follow-up plan