[ vŭl′nər-ə-bəl ]
A phase in the cardiac cycle during which an ectopic impulse may lead to repetitive activity, such as flutter or fibrillation, of the affected chamber.
What Does 🔫 Pistol Emoji Mean?The pistol emoji on most platforms now depicts a toy or water gun, though for a while at least half of the designs depicted a more realistic-looking weapon.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.