title: Autonomic arterial neuropathy in lower limbs.
abstract: OBJECTIVE
  This prospective and controlled study was carried out to show the role of hyperperfusion due to decreased arterial resistance in patients with arterial neuropathy of lower limbs.
  
  
  METHODS
  Arterial Duplex color scanning and magnetic resonance imaging (MRI) angiography were made in 54 patients with lower limb venous stasis in which Pulsatility Index (PI) from pedal arteries by using CW Doppler was below cut off value of 5 as a confirmatory evidence of autonomic neuropathy and in 24 healthy subjects.
  
  
  RESULTS
  PI was mean 2.79 ranged from 4.87 to 0.82 in patients. It was mean 9.38 between 5.43 and 15.25 in control subjects. PSV was found mean 44.52 cm/sec ranged from 26 to 74 cm/s in patients. It was found between 10 and 23 cm/sec with average 16.08 cm/s in healthy ones. In addition to venous duplex scanning findings, MRI angiography demonstrates arterial contrast enhancement, vascular blush, early venous filling and permanent venous dilatation in 16 patients (group 2) having PI below 3 with severe degrees of hyperperfusion. In this group, PI was mean 1.70 ranged from 2.46 to 0.82 and PSV was mean 61.19 cm/s, between 53 to 74 cm/s. Out of patients, 38 (group 1) had no pathological findings in MRI angiography and had PI>3 and <5. In this group, PI was mean 3.26, ranged from 4.87 to 2.55 and PSV was mean 37.5 cm/s, between 26 to 47 cm/s.
  
  
  CONCLUSIONS
  In this trial, we observed that patients with arterial neuropathy in the leg (groups 1 and 2) had a significant increase in PSV and a decrease in PI values from foot arteries compared with that of the control group (P=0.001). A remarkable difference was found in parameters between patient groups (P=0.001). Finally, it can be said that lower limb hyperperfusion owing to arterial neuropathy in various degrees produce venous stasis and is also responsible for some venous abnormalities.
authors.affiliation: Department of Thoracic and Vascular Surgery, Ümraniye Training and Research Hospital, Istanbul, Turkey - behcetener@hotmail.com.
authors.forename: B K
authors.initials: BK
authors.lastname: Ener
authors.forename: H
authors.initials: H
authors.lastname: Uçankale
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001783:Blood Flow Velocity; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D035002:Lower Extremity / Q000000981:diagnostic imaging*; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012039:Regional Blood Flow; D018616:Ultrasonography, Doppler, Duplex; D014647:Varicose Ulcer / Q000000981:diagnostic imaging*; D055815:Young Adult