| left bundle branch block |
ABBR: LBBB. Defect in the conduction system of the heart in which electrical conduction down the left bundle branch is delayed. On the 12-lead EKG, it gives the QRS complex a widened QS complex in lead V1 (0.
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| left common carotid artery |
The second branch of the aortic arch, supplying blood to the left side of the neck and head.
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| left lateral recumbent position |
A position with the patient on the left side, right knee and thigh drawn up; employed in vaginal examination. SYN: obstetrical position .
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| left ventricular assist device |
ABBR: LVAD. A pump surgically implanted in patients with severe heart failure to move blood from the left ventricle to the ascending aorta. The LVAD usually augments the heart's function until it heals (following
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| left ventricular heart failure |
Failure of the heart to maintain left ventricular output.
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