Myocardial metabolic, hemodynamic, and electrocardiographic significance of reversible thallium-201 abnormalities in hypertrophic cardiomyopathy.

R O Cannon; V Dilsizian; P T O'Gara; J E Udelson; W H Schenke; A Quyyumi; L Fananapazir; R O Bonow

Myocardial metabolic, hemodynamic, and electrocardiographic significance of reversible thallium-201 abnormalities in hypertrophic cardiomyopathy.

Authors

Cannon, R O 3rd
Dilsizian, V
O'Gara, P T
Udelson, J E
Schenke, W H
Quyyumi, A
Fananapazir, L
Bonow, R O

Type

Published Article

Journal

Circulation

Publication Date

May 01, 1991

Volume

83

Issue

5

Pages

1660–1667

Identifiers

PMID: 2022023

Source

Medline

License

Unknown

Abstract

Reversible 201Tl abnormalities during exercise stress are markers of myocardial ischemia in hypertrophic cardiomyopathy and most likely identify relatively underperfused myocardium. In contrast, ST segment changes with exercise and systolic compression of coronary arteries on angiography are unreliable markers of inducible myocardial ischemia in hypertrophic cardiomyopathy. Apparent cavity dilatation during 201Tl scintigraphy may indicate ischemia-related changes in left ventricular filling, with elevation in diastolic pressures and endocardial compression.

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. This record was last updated on 07/02/2016 and may not reflect the most current and accurate biomedical/scientific data available from NLM. The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/2022023

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