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Titolo:
SUBENDOCARDIAL MYOCARDIAL-ISCHEMIA AS ASSESSED WITH MYOCARDIAL CONTRAST ECHOCARDIOGRAPHY IN PATIENTS WITH ISCHEMIC HEART-DISEASES
Autore:
LIM YJ; NANTO S; MASUYAMA T; HORI M;
Indirizzi:
KAWACHI GEN HOSP,DIV CARDIOL KAWACHI JAPAN OSAKA UNIV,SCH MED,DEPT MED 1 OSAKA JAPAN
Titolo Testata:
Biorheology
fascicolo: 5-6, volume: 30, anno: 1993,
pagine: 349 - 358
SICI:
0006-355X(1993)30:5-6<349:SMAAWM>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
TWO-DIMENSIONAL ECHOCARDIOGRAPHY; CRITICAL CORONARY STENOSIS; PERFUSION; HUMANS; ARTERIOGRAPHY; OPACIFICATION; INJECTION; NECROSIS; AGENT; DOGS;
Keywords:
MYOCARDIAL ISCHEMIA; MYOCARDIAL CONTRAST ECHOCARDIOGRAPHY; STRESS TEST; CORONARY COLLATERALS; CORONARY ARTERY DISEASE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
Y.J. Lim et al., "SUBENDOCARDIAL MYOCARDIAL-ISCHEMIA AS ASSESSED WITH MYOCARDIAL CONTRAST ECHOCARDIOGRAPHY IN PATIENTS WITH ISCHEMIC HEART-DISEASES", Biorheology, 30(5-6), 1993, pp. 349-358

Abstract

Myocardial contrast echocardiography was used to characterize change in the regional and transmural myocardial blood flow distribution thatwere provoked by rapid atrial pacing stress in patients with coronaryartery diseases. In patients with coronary organic stenosis, a decrease in the myocardial contrast-enhancement in the subendocardial half after rapid atrial pacing was associated with stress-induced chest painand electrocardiographic ST-T changes. The decrease in the myocardialcontrast-enhancement in the subendocardial half after rapid atrial pacing was not observed in patients without coronary stenosis or after coronary angioplasty. Thus, the finding was considered to reflect myocardial ischemia. Pacing-induced decreases in myocardial contrast-enhancement were observed in some patients with old myocardial infarction and significant resting coronary collaterals. In these patients, myocardial ischemia was considered to have developed at rapid pacing because collateral function was good enough to perfuse the infarct myocardium at rest, but was not good enough to prevent myocardial ischemia at stress. Thus, myocardial contrast echocardiography seems to be particularly useful in assessing myocardial ischemia at stress due to coronary stenosis in patients with angina pectoris and due to poor dynamic collateral function in patients with old myocardial infarction.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 20:55:24