Objective: To compare physical examination (PE) and continuous-wave hand-held Doppler (CWD) examination with colour flow duplex scanning as a gold standard for greater saphenous vein (GSV) reflux. Design: Prospective performance of PE and CWD by two clinical examiners and subsequent duplex scanning by two vascular laboratory technicians unaware of the results of the PE and CWD examinations. Tapes were then reviewed; results of the duplex scanning were compared with physical and CWD findings. Patients: Thirty-one women and nine men, aged 27–64 years, with symptomatic class I primary varicosities in distribution of the GSV. Eighty limbs were evaluated Prospectively in 40 consecutive patients, including 22 limbs in 14 patients with a history of prior GSV stripping. Interventions: GSV ligation and stripping in 50 limbs when duplex demonstrated saphenofemoral or truncal reflux; 30 limbs were treated by stab avulsion, cluster excision and sclerotherapy. Main outcome measures: Demonstration of saphenofemoral reflux by duplex was confirmed by operative findings. Sensitivity, specificity and positive and negative predictive values of PE and CWD were calculated in comparison to duplex scans. Results: For PE, sensitivity ad specificity were 48% and 73%; positive predictive and negative predictive values were 75% and 46%. For CWD, sensitivity and specificity were 48% and 83%; positive predictive and negative predictive values were 83% and 44%. CWD was falsely positive for saphenofemoral reflux in 10 instances. The GSV was spared in these 10 limbs and in 20 other limbs based on negative colour flow duplex examinations. At 12–18 months clinical results were similar in 50 limbs treated by ligation and GSV stripping as compared with 30 treated by stab avulsion, cluster and sclerotherapy. Conclusion: Sensitivity and negative predictive values for PE and CWD were low while specificity and postitive predictive values were high. CWD false postitives were due to insonation of veins close to the bulb or upper superficial femoral vein reflux subsequently detected by duplex scans. Colour flow duplex scanning is recommended prior to intervention for primary saphenous varicosities; exceptions occur in slender subjects where PE and CWD are more specific and predictive for reflux.
Objectives: To assess the feasibility of emergency physicians' (EPs') performing color-flow Doppler ultrasonographic vascular studies in the ED to diagnose deep venous thrombosis (DVT), after a modest training program. Methods: A retrospective observational review was performed of the performance of color-flow Doppler ultrasonographic vascular studies by EPs. Prior to the study period, venous Doppler studies were not available at off-hours. Two attending EPs were trained by the hospital's vascular laboratory by observing studies and then performing 25-30 studies successfully. They were then available to examine all patients presenting to the ED at off-hours who were suspected of having DVT. Patients were admitted or released from the ED based on the examination results. All patients were to have formal vascular laboratory studies the next day. The study was performed at a university hospital ED and evaluated all patients who underwent off-hour examinations from January 1993 to February 1994. The examiners were aware of the clinical scenario. Results: Of 23 eligible patients, 15 completed the protocol with a follow-up next-day study. Based on the follow-up study, the ED examination was 100% sensitive (7 true positives) and 75% specific (6 true negatives). The 2 false-positive studies were for patients with old DVT. The 8 patients without follow-up studies were not included in the analysis, although 4 of these patients had negative studies and unremarkable clinical outcomes. Conclusions: These preliminary findings suggest that Doppler ultrasonographic studies of the lower extremity veins by EPs can be used to make admission decisions when formal studies are not available. Confirmatory studies should be performed. EPs may overread acute thrombosis in the setting of old venous disease. Issues of cost and logistics remain to be resolved. Key words: thrombophlebitis; color Doppler ultrasonography; deep venous thrombosis; diagnostic study; vascular imaging study. emergency physicians (EPs) using color venous Doppler ultrasonography for the evaluation of ED patients for whom DVT is clinically suspected. We sought to assess the feasibility of EPs' performing color venous Doppler ultrasonography in the ED to diagnose DVT, after a modest training program.
With prospective screening criteria, 6% to 7% of impotent men became candidates for vascular intervention. Including those functioning with ICI or vacuum constriction devices, about 70% of these men were functional after operation. Men undergoing aortoiliac reconstruction has a significantly higher rate (58%) of spontaneous function as compared with those undergoing microvascular procedures.
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