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Titolo:
Assessment of internal mammary artery and saphenous vein graft patency andflow reserve using transthoracic Doppler echocardiography
Autore:
Chirillo, F; Bruni, A; Balestra, G; Cavallini, C; Olivari, Z; Thomas, JD; Stritoni, P;
Indirizzi:
Reg Hosp Ca Foncello, Dept Cardiol, I-31100 Treviso, Italy Reg Hosp Ca Foncello Treviso Italy I-31100 rdiol, I-31100 Treviso, Italy Dept Cardiol, Cotignola, RA, Italy Dept Cardiol Cotignola RA ItalyDept Cardiol, Cotignola, RA, Italy Cleveland Clin Fdn, Dept Cardiol, Cardiovasc Imaging Ctr, Cleveland, OH 44195 USA Cleveland Clin Fdn Cleveland OH USA 44195 ng Ctr, Cleveland, OH 44195 USA
Titolo Testata:
HEART
fascicolo: 4, volume: 86, anno: 2001,
pagine: 424 - 431
SICI:
1355-6037(200110)86:4<424:AOIMAA>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
MYOCARDIAL BLOOD-FLOW; CORONARY-ARTERY; NONINVASIVE ASSESSMENT; BYPASS GRAFTS; EXERCISE ECHOCARDIOGRAPHY; HEART-DISEASE; SURGERY; VELOCITY; REVASCULARIZATION; SEVERITY;
Keywords:
blood flow; coronary artery disease; coronary artery bypass graft; echocardiography;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Chirillo, F Reg Hosp Ca Foncello, Dept Cardiol, I-31100 Treviso, Italy RegHosp Ca Foncello Treviso Italy I-31100 00 Treviso, Italy
Citazione:
F. Chirillo et al., "Assessment of internal mammary artery and saphenous vein graft patency andflow reserve using transthoracic Doppler echocardiography", HEART, 86(4), 2001, pp. 424-431

Abstract

Objective-To investigate transthoracic Doppler echocardiography in the identification of coronary artery bypass graft (CABG) flow for assessing graftpatency,Design-The initial study group comprised 45 consecutive patients with previous CABG undergoing elective cardiac catheterisation for recurrent ischaemia. The Doppler variables best correlated with angiographic graft patency were then tested prospectively in a further 84 patients (test group). Setting Three tertiary referral centres. Interventions-Flow velocities in grafts were recorded at rest and during hyperaemia induced by dipyridamole (0.56 mg/kg/4 min), under the guidance oftransthoracic colour Doppler flow mapping. Findings on transthoracic Doppler were compared with angiography. Main outcome measures-Feasibility of identifying open grafts by Doppler and diagnostic accuracy for Doppler detection of significant (greater than orequal to 70%) graft stenosis. Results-In the test group the identification rate for mammary artery grafts was 100%, for saphenous vein grafts to left anterior descending coronary artery 91%, for vein grafts to right coronary artery 96%, and for vein grafts to circumflex artery 90%. Coronary flow reserve (the ratio between peak diastolic velocity under hyperaemia and at baseline) of < 1.9 (95% confidence interval 1.83 to 2.08) had 100% sensitivity 98% specificity, 87.5% positive predictive value, and 100% negative predictive value for mammary arterygraft stenosis. Coronary flow reserve of < 1.6 (95% CI 1.51 to 1.73) had 91% sensitivity, 87% specificity, 85.4% positive predictive value, and 92.3%negative predictive value for significant vein graft stenosis. Conclusions-Transthoracic Doppler can provide non-invasive assessment of CABG patency.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 01:53:11