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LEFT ATRIUM
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
The left upper chamber of the heart that receives blood from the pulmonary veins
Synonyms:
atrium sinistrum; left atrium; left atrium of the heart
Classified under:
Hypernyms ("left atrium" is a kind of...):
atrium cordis; atrium of the heart (the upper chamber of each half of the heart)
Context examples:
The hole in the left atrium of the heart where the pulmonary vein enters.
(Opening of the Pulmonary Vein, NCI Thesaurus)
An electrocardiographic finding suggesting underlying hypertrophy or dilatation of the left atrium.
(P-mitrale by ECG Finding, NCI Thesaurus)
A fairly common and often benign valvular heart disorder characterized by redundancy or hooding of mitral valve leaflets so that they prolapse into the left atrium, often causing mitral regurgitation.
(Mitral Valve Prolapse, NCI Thesaurus)
The initial portion of the P wave is largely a reflection of right atrial depolarization and the terminal portion reflects depolarization of the left atrium.
(P Wave, NCI Thesaurus)
A pleomorphic sarcoma usually arising from the left atrium of the heart.
(Cardiac Unclassified Pleomorphic Sarcoma, NCI Thesaurus)
A vein that returns oxygenated blood from the left lung to the left atrium of the heart.
(Left Pulmonary Vein, NCI Thesaurus)
Dilation of the valve between the left atrium and the left ventricle of the heart by use of a surgeon's finger or rigid instrument.
(Mitral Commissurotomy, NCI Thesaurus/ACC)
The right or left atrium is divided into two parts by fibromuscular tissue or a membrane.
(Cor Triatriatum, NCI Thesaurus)
Dilation of the valve between the left atrium and the left ventricle of the heart by inflating a balloon.
(Mitral Balloon Valvotomy, NCI Thesaurus/ACC)
The backward flow of blood from the left ventricle into the left atrium, owing to insufficiency of the mitral valve; it may be acute or chronic, usually due to mitral valve prolapse, rheumatic heart disease or a complication of cardiac dilatation.
(Mitral Valve Regurgitation, NCI Thesaurus)
