title: Factors that influence the outcome of salvage in free tissue transfer.
abstract: BACKGROUND
  The success of salvage techniques for free tissue transfer is well documented. The aim of this study was to identify factors that influenced the results of salvage operations in a group of patients who required early exploration.
  
  
  METHODS
  From a database survey of 408 patients who had a total of 427 free tissue transfer reconstructions, 65 (16%) returned to the operating theatre within 7 days. A retrospective analysis of their progress was made from the case records.
  
  
  RESULTS
  The flap chart was found to be highly accurate for the 65 patients who had returned to the operating theatre, reporting two false positives and one false negative. Forty patients had compromised flaps and 25 had haematomas that required evacuation. The commonest problem with flaps was venous congestion (33/40, 83%), and 29 flaps were successfully salvaged (73%). Most successful salvage attempts were made within 24 hours of the end of the initial operation. The salvage rate was higher for the radial fasciocutaneous flaps (25/30, 83%), than for composite flaps (2/7, 29%). A total of 24/427 flaps failed (6%).
  
  
  CONCLUSIONS
  We now recommend hourly observations of the flap for 24 hours followed by 4-hourly monitoring for 48 hours. Improved monitoring techniques for composite grafts may result in more being salvaged and a better overall survival.
authors.affiliation: Regional Centre for Maxillofacial Surgery, University Hospital Aintree, Longmoor Lane, Liverpool L9 7AL, UK. brownjs@globalnet.co.uk
authors.forename: J S
authors.initials: JS
authors.lastname: Brown
authors.forename: J C
authors.initials: JC
authors.lastname: Devine
authors.forename: P
authors.initials: P
authors.lastname: Magennis
authors.forename: P
authors.initials: P
authors.lastname: Sillifant
authors.forename: S N
authors.initials: SN
authors.lastname: Rogers
authors.forename: E D
authors.initials: ED
authors.lastname: Vaughan
mesh_terms: D000714:Anastomosis, Surgical / Q000009:adverse effects; D006085:Graft Survival; D006258:Head and Neck Neoplasms / Q000601:surgery*; D006406:Hematoma / Q000209:etiology; D006801:Humans; D008866:Microsurgery / Q000009:adverse effects; D011182:Postoperative Care; D019651:Plastic Surgery Procedures / Q000009:adverse effects; D012189:Retrospective Studies; D013524:Surgical Flaps / Q000098:blood supply*; D013927:Thrombosis / Q000209:etiology; D013997:Time Factors; D014182:Transplantation, Autologous / Q000009:adverse effects