title: Evaluation of buttock claudication with hypogastric artery stump pressure measurement and near infrared spectroscopy after abdominal aortic aneurysm repair.
abstract: OBJECTIVE
  We explored the usefulness of intraoperative measurement of hypogastric artery (HGA) stump pressure (HGA-SP) and postoperative near infrared spectroscopy (NIRS) in evaluating buttock claudication (BC) after abdominal aortic aneurysm (AAA) repair.
  
  
  METHODS
  Retrospective clinical study.
  
  
  METHODS
  Twenty patients who were undergoing AAA repair were enrolled. The HGA was ligated bilaterally in 5 patients, unilaterally in 12, and preserved in 3. The HGA-SP was measured intraoperatively. Postoperatively, NIRS was used to evaluate buttock muscle ischemia during walking.
  
  
  RESULTS
  Six patients had unilateral and 1 bilateral BC after AAA repairs. The median HGA-SP brachial pressure index (HBI) was 0.62 (range: 0.45-0.64) in 8 claudicating buttocks and 0.76 (range: 0.63-0.90) in 13 asymptomatic buttocks (p < 0.0005). The HBI was <0.65 in all claudicating buttocks, whereas it was >0.63 in asymptomatic buttocks. In all 8 claudicating buttocks, NIRS showed the ischemic pattern with recovery time lasting more than 240 s.
  
  
  CONCLUSIONS
  An HBI below 0.65 may be a predictor of BC after AAA repair. NIRS appears to be a useful noninvasive method for evaluating BC after AAA.
authors.affiliation: Department of Vascular and Applied Surgery, Tokyo Medical and Dental University, Graduate School of Medicine, Tokyo, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Sugano
authors.forename: Y
authors.initials: Y
authors.lastname: Inoue
authors.forename: T
authors.initials: T
authors.lastname: Iwai
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000503:physiopathology / Q000601:surgery*; D001794:Blood Pressure; D002081:Buttocks / Q000098:blood supply*; D005260:Female; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging / Q000503:physiopathology*; D007511:Ischemia / Q000097:blood / Q000175:diagnosis / Q000209:etiology*; D008026:Ligation; D008297:Male; D008875:Middle Aged; D010108:Oxyhemoglobins / Q000032:analysis; D011859:Radiography; D012189:Retrospective Studies; D019265:Spectroscopy, Near-Infrared
chemical_list: D006454:Hemoglobins; D010108:Oxyhemoglobins; C100003:deoxyhemoglobin