Diseases

Cor Triatriatum

A malformation of the heart in which the embryonic common PULMONARY VEIN was not incorporated into the LEFT ATRIUM leaving behind a perforated fibromuscular membrane bisecting the left atrium, a three-atrium heart. The opening between the two left atrium sections determines the degree of obstruction to pulmonary venous return, pulmonary venous and pulmonary arterial hypertension.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A malformation of the heart in which the embryonic common PULMONARY VEIN was not incorporated into the LEFT ATRIUM leaving behind a perforated fibromuscular membrane bisecting the left atrium, a three-atrium heart. The opening between the two left atrium sections determines the degree of obstruction to pulmonary venous return, pulmonary venous and pulmonary arterial hypertension.

MeSH Record

Classification

Broader headings

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MeSH Record

Synonyms

11 entry terms
  • Cor Triatriatum Sinistrum
  • Subdivided Left Atrium
  • Triatrial Heart
  • Atrium, Subdivided Left
  • Atriums, Subdivided Left
  • Heart, Triatrial
  • Hearts, Triatrial
  • Left Atrium, Subdivided
  • Left Atriums, Subdivided
  • Subdivided Left Atriums
  • Triatrial Hearts

MeSH Record

Aspects Covered

34 allowable subheadings

Indexed with the subheadings blood, cerebrospinal fluid, chemically induced, classification, complications, 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

History Note

87

MeSH Record

Previous Indexing

  • Heart Atrium (1966-1986)
  • Heart Defects, Congenital (1966-1986)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Cor Triatriatum. Medical Subject Headings (MeSH). 2026. Unique ID D003310. http://id.nlm.nih.gov/mesh/2026/D003310
  2. Cor Triatriatum. In: Wikipedia. https://en.wikipedia.org/wiki/Cor_triatriatum
  3. Cor Triatriatum. In: Wikidata. https://www.wikidata.org/wiki/Q5169382