Open AccessThe influence of angiographically demonstrated coronary collaterals on the results of stress echocardiography
Author(s) -
Stone David A.,
Corretti Mary C.,
Hawke Mary W.,
Herzog William,
Rodriguez Samuel,
Plotnick Gary D.
Publication year - 1995
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960180405
Subject(s) - medicine , cardiology , stenosis , perfusion , abnormality , collateral circulation , angiography , cardiac catheterization , scintigraphy , right coronary artery , artery , radiology , coronary arteries , coronary angiography , myocardial infarction , psychiatry
Previous studies using thallium‐201 scintigraphy have suggested that angiographic coronary collaterals can protect against the development of stress‐induced perfusion abnormalities, but the effect of collaterals on stress echocardiography (SECHO) has not been determined. In this study, 21 consecutive patients referred for cardiac catheterization underwent SECHO and coronary angiography. Of the 21 study patients, there was a total of 16 significantly obstructed coronary arteries (≥ 70% stenosis) in 14 patients. SECHO revealed stress‐induced wall motion abnormalities in the distribution of seven of nine obstructed coronary vessels without angiographic collaterals, but in only one of seven vessels with collaterals (p ≤ 0.05). Six of eight obstructed vessels not associated with a stress‐induced wall motion abnormality had collaterals, whereas only one of eight obstructed vessels associated with a stress‐induced wall motion abnormality had collaterals. We conclude that (1) angiographically demonstrated coronary collaterals can protect against the development of stress‐induced wall motion abnormalities despite the presence of a high‐grade coronary artery obstruction, and (2) the lack of a stress‐induced wall motion abnormality on SECHO in the perfusion territory of an obstructed vessel may suggest the presence of adequate collateral perfusion.