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Titolo:
CAROTID DUPLEX OVERESTIMATION OF STENOSIS DUE TO SEVERE CONTRALATERALDISEASE
Autore:
BUSUTTIL SJ; FRANKLIN DP; YOUKEY JR; ELMORE JR;
Indirizzi:
GEISINGER MED CLIN,VASC SURG SECT DANVILLE PA 17822 GEISINGER MED CLIN,VASC SURG SECT DANVILLE PA 17822
Titolo Testata:
The American journal of surgery
fascicolo: 2, volume: 172, anno: 1996,
pagine: 144 - 147
SICI:
0002-9610(1996)172:2<144:CDOOSD>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
ARTERY STENOSIS; OCCLUSION; CRITERIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
S.J. Busuttil et al., "CAROTID DUPLEX OVERESTIMATION OF STENOSIS DUE TO SEVERE CONTRALATERALDISEASE", The American journal of surgery, 172(2), 1996, pp. 144-147

Abstract

BACKGROUND: In the quest to use carotid duplex to assess carotid occlusive disease, it has been repeated that the current velocity criteriato calculate stenosis tends to overestimate the severity when there is a contralateral highly stenotic or occluded carotid artery. METHODS:patient records were reviewed for 592 consecutive carotid endarterectomies performed from 1987 to 1994. Preoperative and postoperative duplex scan results were compared in a subset of patients in whom duplex overestimated the degree of stenosis, as compared to preoperative angiography. RESULTS: A fetal of 146 patients were identified in whom duplex overestimated the degree of stenosis contralateral to a high grade stenosis or an occlusion. Of 76 arteries, 18 (23.7%) contralateral to an occluded artery were overestimated by duplex, and 128 (27.0%) of 474arteries contralateral to a high grade stenosis were overestimated, Following endarterectomy 44 (51.8%) of 128 nonoperated contralateral stenoses decreased by at least one duplex category. The average peak systolic frequency (PSF) decreased by 1175 Hz (P = 0.0018), and the average end diastolic frequency (EDF) decreased by 475 Hz (P = 0.011). CONCLUSIONS: Patients with high grade stenosis have a significant decreasein PSF and EDF in the unoperated carotid after endarterectomy, supporting a compensatory flow phenomenon, This often results in a decrease in the postoperative duplex defined stenosis by at least one category,The clinical significance of these findings is of increasing importance as carotid surgery is being performed more frequently without angiography.

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Documento generato il 06/08/20 alle ore 15:58:37