title: Screening for aortoiliac lesions by visual interpretation of the common femoral Doppler waveform.
abstract: OBJECTIVE
  to study the accuracy of simple visual interpretation of the common femoral artery Doppler waveform for screening the aorto-iliac segment for significant occlusive disease.
  
  
  METHODS
  prospective and semi-blinded study. Material ninety-four consecutive and elective patients having arteriography due to chronic lower limb ischaemia, presenting symptoms of severe claudication (23%), ischaemic rest pain (34%) or ischaemic skin lesions (43%).
  
  
  METHODS
  one day prior to conventional arteriography a Doppler waveform was obtained in the common femoral artery. Based on visual interpretation, the waveforms were immediately categorised as normal or abnormal. Comparison with single plane arteriography with respect to significant aorto-iliac occlusive disease was undertaken.
  
  
  RESULTS
  visual Doppler waveform interpretation had a sensitivity of 98% (95% CI: 90-100%), a specificity of 81% (CI: 67-90%), a positive predictive value of 86% (CI: 75-93%) and a negative predictive value of 97% (CI: 86-100%) for prediction of significant aorto-iliac occlusive disease using conventional arteriography as the gold standard. The kappa value for the agreement between Doppler waveform interpretation and arteriography was 0.81 (0.68-0.93), representing very good agreement.
  
  
  CONCLUSIONS
  a normal common femoral Doppler waveform can safely exclude significant upstream aorto-iliac lesions and is a useful timesaving screening tool in the busy vascular laboratory. The method is well tolerated, easy to perform and requires no additional equipment.
authors.affiliation: Department of Vascular Surgery, Rigshospitalet, Copenhagen, Denmark.
authors.forename: J P
authors.initials: JP
authors.lastname: Eiberg
authors.forename: F
authors.initials: F
authors.lastname: Jensen
authors.forename: J B
authors.initials: JB
authors.lastname: Grønvall Rasmussen
authors.forename: T V
authors.initials: TV
authors.lastname: Schroeder
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001012:Aorta, Abdominal; D001018:Aortic Diseases / Q000000981:diagnostic imaging*; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D002908:Chronic Disease; D005260:Female; D005263:Femoral Artery / Q000000981:diagnostic imaging*; D006801:Humans; D007083:Iliac Artery; D007511:Ischemia / Q000000981:diagnostic imaging; D007866:Leg / Q000098:blood supply; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D018608:Ultrasonography, Doppler