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Ischemic complications after total knee arthroplasty (TKA) are rare. There is a reported association with chronic lower extremity ischemia (CLEI), however. This prospective study examined changes in blood pressure in the lower limb during the early postoperative period. Arterial blood pressure was assessed before and after TKA by the ankle brachial pressure(More)
In a clinical study, 78 carotid bifurcations were examined by pulsed Doppler ultrasonography and X-ray arteriography. Maximum Doppler frequencies greater than or equal to 3 kHz diagnosed stenoses of greater than or equal to 25% diameter reduction with a sensitivity of 73% and specificity of 79%. A quantitative analysis of the degree of spectral broadening(More)
In over 200 patients with peripheral vascular disease, pressure index (formula: see text) was compared with radiological grade; although calf P.I. had a better correlation, there was wide overlap between the groups. In 28 patients, resting calf P.I. was compared with functional impairment measured on a treadmill. At two rates of exercise, calf P.I.(More)
The pressure drop across a stenosis is related only to its geometry and the flow through it. Flow may be manipulated by changing peripheral resistance, enabling information to be gained about the severity of the stenosis. As changes in blood flow may produce changes in local blood pressure in patients with peripheral arterial disease, measurements of blood(More)
BACKGROUND Duplex ultrasonography is used increasingly to select patients for carotid endarterectomy. This study aims to clarify whether arteriography is still required. METHODS A total of 272 patients in whom duplex imaging indicated significant disease of the internal carotid artery underwent arteriography and the results were compared. Regarding the(More)
Three cases of severe occlusive peripheral vascular disease are described in which spontaneous arterio-venous fistulae at the site of atheromatous occlusion have been demonstrated by angiography during the arterial phase. Although none of these patients exhibited specific clinical signs of an arterio-venous fistula, this phenomenon is considered to have(More)