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The use of routine duplex scanning in the assessment of varicose veins.
Australian and New Zealand Journal of Surgery 1998 January
BACKGROUND: Clinical assessment has been shown to compare poorly with results of hand-held Doppler examination or venography in the evaluation of varicose veins. Although the use of duplex scanning has been well described in the assessment of varicose veins, there are few data comparing clinical and Doppler assessment with results of duplex scans.
METHODS: A total of 188 patients were referred with varicose veins to a sole specialist vascular surgeon over a 1-year period. After clinical and Doppler assessment, all patients were referred for a duplex scan which was performed by a trained vascular technician. The results of the duplex scan were compared retrospectively with the clinical and Doppler findings.
RESULTS: A total of 315 legs were assessed over this period, with 38.7% having recurrent disease and 31.4% having trophic skin changes or ulceration. On duplex scanning, 198 legs (62.9%) had saphenofemoral junction incompetence, 61 legs (19.4%) had saphenopopliteal junction incompetence, 94 legs (29.8%) had perforator incompetence and 24 legs (7.6%) had deep venous incompetence. The respective sensitivity of clinical and Doppler assessment at these sites was 71.2, 36.1, 43.6 and 29.2%. If patients who were felt to have sole saphenofemoral junction incompetence clinically were treated by high ligation, stripping to the knee and stab avulsions, 28.9% would have had sites of reflux untreated.
CONCLUSIONS: Clinical and Doppler assessment is unreliable. Routine duplex scanning is likely to reduce recurrence by identifying sites of reflux with greater accuracy.
METHODS: A total of 188 patients were referred with varicose veins to a sole specialist vascular surgeon over a 1-year period. After clinical and Doppler assessment, all patients were referred for a duplex scan which was performed by a trained vascular technician. The results of the duplex scan were compared retrospectively with the clinical and Doppler findings.
RESULTS: A total of 315 legs were assessed over this period, with 38.7% having recurrent disease and 31.4% having trophic skin changes or ulceration. On duplex scanning, 198 legs (62.9%) had saphenofemoral junction incompetence, 61 legs (19.4%) had saphenopopliteal junction incompetence, 94 legs (29.8%) had perforator incompetence and 24 legs (7.6%) had deep venous incompetence. The respective sensitivity of clinical and Doppler assessment at these sites was 71.2, 36.1, 43.6 and 29.2%. If patients who were felt to have sole saphenofemoral junction incompetence clinically were treated by high ligation, stripping to the knee and stab avulsions, 28.9% would have had sites of reflux untreated.
CONCLUSIONS: Clinical and Doppler assessment is unreliable. Routine duplex scanning is likely to reduce recurrence by identifying sites of reflux with greater accuracy.
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