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Titolo:
Alterations of myocardial ultrasonic tissue characterization by coronary angioplasty in patients with chronic stable coronary artery disease
Autore:
Lin, LC; Kao, HL; Wu, CC; Ho, YL; Lee, YT;
Indirizzi:
Natl Taiwan Univ Hosp, Dept Internal Med, Cardiol Sect, Taipei 10002, Taiwan Natl Taiwan Univ Hosp Taipei Taiwan 10002 iol Sect, Taipei 10002, Taiwan
Titolo Testata:
ULTRASOUND IN MEDICINE AND BIOLOGY
fascicolo: 9, volume: 27, anno: 2001,
pagine: 1191 - 1198
SICI:
0301-5629(200109)27:9<1191:AOMUTC>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
DOBUTAMINE STRESS ECHOCARDIOGRAPHY; INTEGRATED BACKSCATTER; HIBERNATING MYOCARDIUM; CYCLIC VARIATION; EXTRACELLULAR-MATRIX; CONTRACTILE RESERVE; STUNNED MYOCARDIUM; CARDIAC MYOCYTES; WALL MOTION; TIME-DELAY;
Keywords:
angioplasty; coronary artery disease; dobutamine stress echocardiography; restenosis; ultrasonic tissue characterization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Lee, YT Natl Taiwan Univ Hosp, Dept Internal Med, Cardiol Sect, 7 Chung Shan S Rd,Taipei 10002, Taiwan Natl Taiwan Univ Hosp 7 Chung Shan S Rd Taipei Taiwan 10002 aiwan
Citazione:
L.C. Lin et al., "Alterations of myocardial ultrasonic tissue characterization by coronary angioplasty in patients with chronic stable coronary artery disease", ULTRASOUN M, 27(9), 2001, pp. 1191-1198

Abstract

We conducted a study to delineate the alterations in the cyclic changes ofmyocardial ultrasonic integrated backscatter (IBS) in patients receiving angioplasty for chronic coronary artery disease. Ultrasonic tissue characterization (UTC) and dobutamine stress echocardiography were performed in 43 patients before and 24 h after angioplasty, as well as before the follow-up angiography 3 months later. For segments being normokinetic with ischemic burden, the blunted amplitude and increased nadir deviation of IBS cyclic modulation recovered soon after angioplasty. For dyssynergic segments with contractile reserve, the angioplasty rebuilt the amplitude before the wall motion recovered, but corrected the nadir deviation tardily. In both circumstances, the coronary restenosis abolished the initial restoration. Those nonviable segments persistently revealed large deviations and small weighted amplitudes irrelevant to coronary lesions. The progress of myocardial ischemia, the development of wall motion dyssynergy and, then, the loss of viability, show different patterns of alterations in UTC after alleviating coronary obstructions.

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Documento generato il 03/04/20 alle ore 09:35:12