Normal Pulse Rate Guide: Resting, Sleeping & Exercise Rates

Pulse rates vary significantly during sleep, pregnancy, and exercise. Learn the normal ranges for women, teens, and infants, and identify causes for low heart rates.

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Effects of Atropine on Heart Rate

Published Aug,14 2017 | By Stephanie Vargas, M.D.

Atropine is an anticholinergic medication that may be administered in a variety of medical situations. Anticholinergic drugs block the action of acetylcholine, a neurotransmitter found in many places throughout the body. Atropine is often used during surgical procedures performed under general anesthesia.