different between heartbeat vs extrasystole

English

Etymology

From heart +? beat

Pronunciation

• (UK) IPA^(key): /?h??t?bi?t/
• (US) IPA^(key): /?h??t?bit/, [?h???bi?]

Noun

heartbeat (plural heartbeats)

1. One pulsation of the heart; especially an irregular one, hence the emotion which causes it.

   The policeman waited for a heartbeat in vain

   He alone gives me such heartbeats

2. The rhythm at which a heart pulsates, a cardiac indicator

   If your heartbeat doesn't normalize soon, consult a doctor!

3. A driving impulse or vital force.

   Music is the heartbeat of the people.

4. A very short space of time; an instant.

   The ambulance arrived in a heartbeat.

5. (computing) A periodic signal generated by hardware or software to indicate normal operation or to synchronize other parts of a system.

Synonyms

• (rhythm at which a heart pulsates): pulse

Derived terms

• in a heartbeat

Translations

English

Etymology

extra- +? systole

Noun

extrasystole (plural extrasystoles)

1. (medicine) A premature contraction of the heart, producing an interruption or irregularity in heartbeat rhythm, associated with heart disease or the use of some pharmaceuticals.
   • 1914, Thomas Lewis et al., "The Excitatory Process in the Dog's Heart," Philosophical Transactions of the Royal Society of London. Series B, containing Papers of a Biological Character, vol. 205, p. 404:

     An extrasystole originating at the rhythmic centre is thus followed by a returning cycle of natural length.

   • 2005, Gian-Battista Chierchia MD et al., "Arrhythmia Rounds: A Case of Junctional Extrasystoles?" Journal of Cardiovascular Electrophysiology, vol. 16, no. 5, p. 557:

     A 30-year-old woman, with no heart disease, was referred to our center with a history of rare episodes of sustained tachycardia and frequent feeling of extrasystoles.

Translations

Synonyms

• premature ventricular contraction (PVC)
• ventricular premature beat (VPB)

Related terms

• extrasystolia
• extrasystolic

See also

• skipped heartbeat
• palpitation

See also

• Premature ventricular contraction on Wikipedia.Wikipedia

French

Noun

extrasystole m (plural extrasystoles)

1. extrasystole