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the cycle of contraction of the heart muscle; it begins with an electrical impulse in the sinoatrial node, which serves as the normal pacemaker for the heart.
Heartbeat: The conduction system of the heart that is involved in the cycle of contraction. From Frazier et al., 2000.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


A single complete cycle of contraction and dilation of heart muscle.
Farlex Partner Medical Dictionary © Farlex 2012


1. A single complete pulsation of the heart.
2. A vital force or driving impulse: Broadway is the heartbeat of the New York City theater world.
3. An instant: I'll be there in a heartbeat.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

Patient discussion about heartbeat

Q. What is considered a slow heartbeat? I am a 30 year old woman and I went for a routine checkup at my Doctor's. He checked my pulse and it was 52 beats per minute. Is this considered slow? All my family members have a faster beat of 65- 90 beats per minute. If it is slow, is it bad?

A. If the heartbeat is too slow, usually considered a rate below 60 beats a minute, not enough oxygen-rich blood flows through the body. The symptoms of a slow heartbeat are:

Fainting or near fainting

However, some people with slow heartbeat don't have any symptoms at all. Regular exercise can also result in a slow heartbeat. This happens because the exercise has actually strengthened the heart to the point where it can beat less often and still perform its job effectively. I am not a doctor, but it seems to me that in this case the slow heartbeat is not a cause for concern. If it troubles you, consult your doctor and see what he/she thinks about it.

Q. SVT and AF, Hearts that go fast to slow or any others probs with the beats of any kind and Ablation of hearts I have had Ablation done once and I am still having passing out spells and still on 50mg toprol 2 times a day till two days ago, now I am on 150 to 200 aday again. Its not the first time I have had to up meds. I had ablation down 4/22/05. I can breath better now but but it didnt take it away as you can tell. Now Dr Leonardie would like to do it again . This is the big ????! Will it or can it work 100% this time, or will it hit and miss some again???? MTT

A. Well I can understand the frustration of having to go through this procedure yet another time. There are no guarantees in medicine. You should follow your doctor's advice, as another proceudre might be more helpful than the last one. However you should keep in mind that nothing is for sure.

Q. my ears do not hear well especially when it's cold. i hear my breath and heart beat. what's my prolem? Denis when i breathe it feels like the breath goes through the ear when the weather is cold or when i do some excercise like jogging

A. for ear infections or blocked ear tube - try out the eardoc www.eardoc.info

More discussions about heartbeat
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References in periodicals archive ?
Both respiration and heartbeat were obtained with impulse radio (IR)-UWB radar proposed in [2].
When the irregular heartbeat kicked in again doctors eventually discovered James was suffering from rare heart condition Wolff-Parkinson-White syndrome.
He revealed to the Express that his late wife Janie, had bought a cottage right by the Heartbeat set but he had to sell it 14 years later because people recognised him too often.
Through their platform and mobile app, Heartbeat provides brands with access to over 200,000 consumers to run large-scale influencer-style campaigns on Instagram.
Heartbeat is built on the philosophy of test-the-way-users-work and no spam!
Second, we evaluate Hive performance according to changes in heartbeat periods using TPC-H on a Hive workload [3].
It's all about "heartbeat"--mine and yours, his and ours...
The OpenSSL implementation of TLS protocol is known as heartbeat extension (RFC6520).
[USA], May 5 ( ANI ): Governor of United States' Iowa, Kim Reynolds on Friday signed a legislation, called "the heartbeat bill," that forbids doctors from performing an abortion if a fetal heartbeat is detected, CNN reported.
A study was carried out to extract the heartbeat frequency accurately as well as to observe the change of the heartbeat patterns by processing the radar signals in the time domain [5].
A TOY company is thriving, with a 'heartbeat chip' inside a teddy bear helping drive growth.
Without that tether, EQ Radio can't make assumptions about your heartbeat. Your position, the size of the room, and a lot of other factors could, essentially, muffle your heartbeat.