Colour-coded duplex ultrasonography in the selection of patients for endovascular surgery

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Abstract
Endovascular surgery using angioplasty or atherectomy may potentially relieve the symptoms of claudicants with minimal morbidity, but results are best when short stenoses are treated. In this study, colour-coded duplex ultrasonography has been compared with angiography. In aortoiliac segments duplex examination had a sensitivity of 88 per cent and a specificity of 100 per cent; infemoropopliteal disease the sensitivity was 100 per cent and duplex scanning identified more disease than angiography. Subsequently, 73 symptomatic limbs with femoropopliteal disease were scanned to assess their suitability for endovascular surgery. Of these limbs, 27 (37 per cent) had suitable lesions and the remaining 46 (63 per cent) were spared angiography. Colour-coded duplex ultrasonography can reliably be used to select patients for endovascular surgery.

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