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Titolo:
Validity of duplex ultrasound as a diagnostic modality for internal carotid artery disease
Autore:
New, G; Roubin, GS; Oetgen, ME; Lawrence, EJ; Iyer, SS; Moussa, I; Vitek, JJ; Moses, JW;
Indirizzi:
Lenox Hill Heart & Vasc Inst New York, New York, NY 10021 USA Lenox Hill Heart & Vasc Inst New York New York NY USA 10021 NY 10021 USA
Titolo Testata:
CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS
fascicolo: 1, volume: 52, anno: 2001,
pagine: 9 - 15
SICI:
1522-1946(200101)52:1<9:VODUAA>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENDARTERECTOMY; STENOSIS; ANGIOGRAPHY; IDENTIFICATION; ARTERIOGRAPHY;
Keywords:
angiography; ultrasound; carotid stenting; carotid endarterectomy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Roubin, GS Lenox Hill Heart & Vasc Inst New York, 130 E 77th St, New York,NY 10021 USA Lenox Hill Heart & Vasc Inst New York 130 E 77th St New York NY USA 10021
Citazione:
G. New et al., "Validity of duplex ultrasound as a diagnostic modality for internal carotid artery disease", CATHET C IN, 52(1), 2001, pp. 9-15

Abstract

There is an increasing trend to rely on duplex ultrasound rather than angiography to measure an internal carotid artery stenosis. The aim of this study was to determine the validity of ultrasound assessment of carotid stenosis performed in community based vascular laboratories. We compared ultrasound with angiography in 225 patients referred to us for carotid intervention. Mild lesions were diagnosed by ultrasound with a sensitivity of 54%, specificity of 89%, and a positive predictive value of 89% compared with angiography. Severe lesions had a sensitivity of 93%, a specificity of 67%, and apositive predictive value of 45%. Receiver operator characteristic curves demonstrated the optimal ultrasound cut-off value of 66% stenosis as a predictor of >60% stenosis measured angiographically, is associated with a false positive rate of 38%, and a false negative rate of 9%. Similarly, if a cut-off of 76% on ultrasound is used to predict >70% stenosis measured angiographically, it would be associated with a 29% false positive rate and a false negative rate of 11%. Despite the value of non-invasive testing for carotid disease, duplex ultrasonography performed in non-accredited and some accredited laboratories may produce highly variable results. Using ultrasoundas the sole diagnostic test to determine the severity of a carotid stenosis may result in a high number of inappropriate operations and a large proportion of patients who may not be offered treatment due to false negative diagnoses. Cathet Cardiovasc Intervent 2001;52:9-15. (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/01/20 alle ore 12:17:22