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Prevalence of right ventricular involvement in inferior wall infarction assessed with myocardial imaging with /sup 201/Tl and /sup 99m/Tc pyrophosphate

Journal Article · · Am. J. Cardiol.; (United States)
To assess the prevalence and clinical relevance of right ventricular involvement in acute inferior wall infarction, 78 consecutive patients with the latter condition were studied with /sup 201/Tl and /sup 99m/Tc pyrophosphate myocardial imaging. Right ventricular involvement was determined from superimposition of the 45 degree left anterior oblique /sup 201/Tl and /sup 99m/Tc pyrophosphate images. All 78 patients showed /sup 201/Tl defects. Sixty-four patients had positive pyrophosphate scans, and 24 of these (37.5 percent) showed right ventricular involvement. None of the patients with right ventricular involvement in this consecutive series showed the classic signs of severe right ventricular failure, although subclinicalright ventricular dysfunction may have been present. There was no significant difference in the incidence of cardiogenic shock between the groups with and without right ventricular involvement. It is concluded that right ventricular involvement in acute inferior wall infarction is relatively frequent but not necessarily associated with severe right-sided pump failure. In patients with acute inferior wall infarction and severe pump failure, dual imaging provides a simple nonivasive method of identifying the subroup of patients with right ventricular involvement who may benefit from volume loading.
Research Organization:
Univ. of Amsterdam, Netherlands
OSTI ID:
6761016
Journal Information:
Am. J. Cardiol.; (United States), Journal Name: Am. J. Cardiol.; (United States) Vol. 42:3; ISSN AJCDA
Country of Publication:
United States
Language:
English

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