Diseases

Parasystole

A cardiac arrhythmia that is caused by interaction of two independently initiated cardiac impulses of different rates from two separate foci. Generally one focus is the SINOATRIAL NODE, the normal pacemaker. The ectopic focus is usually in the HEART VENTRICLE but can be in the HEART ATRIUM or the ATRIOVENTRICULAR NODE. Modulation of the parasystolic rhythm by the sinus rhythm depends on the completeness of entrance block surrounding the parasystolic focus.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A cardiac arrhythmia that is caused by interaction of two independently initiated cardiac impulses of different rates from two separate foci. Generally one focus is the SINOATRIAL NODE, the normal pacemaker. The ectopic focus is usually in the HEART VENTRICLE but can be in the HEART ATRIUM or the ATRIOVENTRICULAR NODE. Modulation of the parasystolic rhythm by the sinus rhythm depends on the completeness of entrance block surrounding the parasystolic focus.

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

Loading graph…

Drag nodes to rearrange; hover to trace links; click a node to open its page.

MeSH Record

Synonyms

1 entry terms
  • Parasystoles

MeSH Record

Aspects Covered

35 allowable subheadings

Indexed with the subheadings blood, cerebrospinal fluid, chemically induced, classification, complications, congenital, diagnosis, diagnostic imaging, diet therapy, drug therapy, economics, embryology, enzymology, epidemiology, ethnology, etiology, genetics, history, immunology, metabolism, microbiology, mortality, nursing, parasitology, pathology, physiopathology, prevention & control, psychology, radiotherapy, rehabilitation, surgery, therapy, urine, veterinary, virology.

MeSH Record

Indexing Annotation

coordinate IM with HEART ATRIUM; HEART VENTRICLES or other site in heart (NIM) if pertinent; sinus parasystole: coordinate IM with ARRHYTHMIA, SINUS (IM)

MeSH Record

History Note

94

MeSH Record

Previous Indexing

  • Arrhythmia (1966-1993)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Parasystole. Medical Subject Headings (MeSH). 2026. Unique ID D017574. http://id.nlm.nih.gov/mesh/2026/D017574
  2. Parasystole. In: Wikipedia. https://en.wikipedia.org/wiki/Parasystole
  3. Parasystole. In: Wikidata. https://www.wikidata.org/wiki/Q3494080