Diagnostic criteria for the determination of clinically significant internal carotid artery stenosis using duplex ultrasound.

Autor:	Gorican K; 4th Department of Internal Medicine, First Faculty of Medicine, Charles University in Prague and General Teaching Hospital in Prague, Prague, Czech Republic., Chochola M; 2nd Department of Internal Medicine, First Faculty of Medicine, Charles University in Prague and General Teaching Hospital in Prague, Prague, Czech Republic., Kocik M; 4th Department of Internal Medicine, First Faculty of Medicine, Charles University in Prague and General Teaching Hospital in Prague, Prague, Czech Republic., Zak A
Jazyk:	angličtina
Zdroj:	Biomedical papers of the Medical Faculty of the University Palacky, Olomouc, Czechoslovakia [Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub] 2020 Sep; Vol. 164 (3), pp. 255-260. Date of Electronic Publication: 2019 Jun 17.
DOI:	10.5507/bp.2019.029
Abstrakt:	Background: Carotid endarterectomy is beneficial in symptomatic patients with ≥70% stenosis at the bifurcation of the internal carotid artery. The fact that the duplex ultrasound is widely used, inexpensive and non-invasive for examination of the carotid arteries underlines the importance of high accuracy of this method for grading internal artery stenosis. Patients and Methods: Duplex scans and arteriograms of carotid arteries of 142 patients were reviewed. Peak and end-diastolic velocities of the common and internal carotid arteries were recorded, and the percent stenosis of the internal carotid artery was determined by arteriogram. Receiver-operator characteristic curves of sensitivity, specificity, positive and negative predictive values and accuracy were determined. Results: The recommended criteria for the detection of ≥70% stenosis of the internal carotid artery were: peak systolic velocity in the internal carotid artery ≥215 cm/s, end-diastolic velocity in the internal carotid artery ≥65 cm/s, ratio of peak systolic velocities in the internal and common carotid arteries ≥2.7 and ratio of the end-diastolic velocities of the internal and common carotid arteries ≥3.7. Conclusion: These criteria allow for reliable determination of internal carotid artery stenosis ≥70% by duplex ultrasound.
Databáze:	MEDLINE
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