title: Clinical outcomes after infrainguinal bypass grafting for critical limb ischaemia in patients with dialysis-dependent end-stage renal failure.
abstract: OBJECTIVE
  To assess and risk-stratify the medium-term clinical outcomes after infrainguinal bypass grafting (IBG) to treat critical limb ischaemia (CLI) in patients with end-stage renal disease.
  
  
  METHODS
  This was a retrospective single-centre study. Between April 2007 and March 2011, 112 limbs from 89 patients were studied. In particular, amputation-free survival (AFS), 30 day mortality, freedom from major adverse limb events (MALE), limb salvage, and overall survival were examined. The aim was to identify outcome predictors.
  
  
  RESULTS
  Eight patients (9%) died within 30 days of IBG. The only positive predictor of 30-day mortality was an ejection fraction (EF) < 40% (hazard ratio [HR] 5.57, 95% confidence interval [CI] 1.16-26.83; p = .03). The mean follow-up duration was 14 months. The 1- and 2-year AFS rates were 64% and 43%, respectively, and the rates of freedom from MALE were 81% and 77%, respectively. In addition, the 1- and 2-year limb salvage rates were 89% and 85%, and the survival rates were 68% and 50%, respectively. Non-ambulatory status was negatively associated with AFS (HR 3.04, 95% CI 1.59-5.82; p < .01), freedom from MALE (HR 4.98, 95% CI 1.91-12.96; p < .01), and limb salvage (HR 5.18, 95% CI 1.47-18.30; p = .01). The other negative predictors of overall survival were a serum albumin level <3.0 g/dL (HR 2.26, 95% CI 1.12-4.58; p = .02) and an EF <40% (HR 2.24, 95% CI 1.05-4.79; p = .04).
  
  
  CONCLUSIONS
  Patients with CLI on dialysis enjoyed satisfactory freedom from MALE and limb salvage, but survival and AFS were significantly less than reported for IBG in patients with CLI who did not receive dialysis. In addition, patients with an EF <40%, lower serum albumin (<3.0 g/dL), or non-ambulatory status experienced particularly poor clinical outcomes after IBG.
authors.affiliation: Division of Vascular Surgery, Department of Surgery, Nagoya University Graduate School of Medicine, 5 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan; Department of Vascular Surgery, Kokura Memorial Hospital, 1-1 Kifune-machi, Kokurakita-ku, Kitakyushu 802-8555, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Kodama
authors.affiliation: Division of Vascular Surgery, Department of Surgery, Nagoya University Graduate School of Medicine, 5 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Sugimoto
authors.affiliation: Department of Vascular Surgery, Kokura Memorial Hospital, 1-1 Kifune-machi, Kokurakita-ku, Kitakyushu 802-8555, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Kuma
authors.affiliation: Department of Vascular Surgery, Kokura Memorial Hospital, 1-1 Kifune-machi, Kokurakita-ku, Kitakyushu 802-8555, Japan.
authors.forename: J
authors.initials: J
authors.lastname: Okazaki
authors.affiliation: Department of Vascular Surgery, Kokura Memorial Hospital, 1-1 Kifune-machi, Kokurakita-ku, Kitakyushu 802-8555, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Mii
authors.affiliation: Division of Vascular Surgery, Department of Surgery, Nagoya University Graduate School of Medicine, 5 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. Electronic address: komori@med.nagoya-u.ac.jp.
authors.forename: K
authors.initials: K
authors.lastname: Komori
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000671:Amputation, Surgical; D015415:Biomarkers / Q000097:blood; D016638:Critical Illness; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D007511:Ischemia / Q000150:complications / Q000175:diagnosis / Q000401:mortality / Q000503:physiopathology / Q000601:surgery*; D007564:Japan; D053208:Kaplan-Meier Estimate; D007676:Kidney Failure, Chronic / Q000150:complications / Q000175:diagnosis / Q000401:mortality / Q000628:therapy*; D023821:Limb Salvage; D008297:Male; D016016:Proportional Hazards Models; D006435:Renal Dialysis / Q000009:adverse effects / Q000401:mortality; D012086:Reoperation; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D012709:Serum Albumin / Q000378:metabolism; D000075462:Serum Albumin, Human; D013318:Stroke Volume; D013997:Time Factors; D016896:Treatment Outcome; D058017:Vascular Grafting / Q000009:adverse effects / Q000401:mortality
chemical_list: C422455:ALB protein, human; D015415:Biomarkers; D012709:Serum Albumin; D000075462:Serum Albumin, Human
keywords: Critical limb ischaemia; Dialysis-dependent end-stage renal failure; Infrainguinal bypass grafting