title: The effects of blood transfusion on renal functions in orthopaedic surgery.
abstract: OBJECTIVE
  The effects of perioperative blood transfusion on renal functions have been studied in various studies. In this study, we investigated the effects of blood transfusion on postoperative kidney functions in patients who underwent orthopaedic surgeries.
  
  
  METHODS
  Total 136 patients who were operated for several orthopedic pathologies between June 2013 and December 2014 were evaluated. The patients were divided into two groups according to the amounts of blood transfusion. Ninety five patients (69.8%) who were transfused less than 3 units were included in Group 1 and 41 patients (30.2%) who received 3 and more units of blood were included in Group 2.
  
  
  RESULTS
  There were no statistical difference between the two groups in terms of preoperative gender, hypertension, diabetes mellitus, chronical renal failure and smoking habbits (P > 0.05). No statistical differences between the groups were seen in terms of postoperative hospital stay, pulmonary and other complications as well as mortality (P > 0.05). When the two groups were compared for blood parameters showing postoperative renal and other system functions, no statistical differences were detected (P > 0.05).
  
  
  CONCLUSIONS
  Blood transfusion does not have negative effects on postoperative BUN and creatinine levels in patients operated for orthopaedic pathologies.
authors.affiliation: Ismail Safa Satoglu, Department of Orthopaedics & Traumatology, Dokuz Eylul University, Faculty of Medicine, Izmir, Turkey.
authors.forename: Ismail Safa
authors.initials: IS
authors.lastname: Satoglu
authors.affiliation: Serkan Akcay, Department of Orthopaedics & Traumatology, Kurtköy Ersoy Hospital, Istanbul, Turkey.
authors.forename: Serkan
authors.initials: S
authors.lastname: Akcay
authors.affiliation: Levent Horoz, Department of Orthopaedics & Traumatology, Dokuz Eylul University, Faculty of Medicine, Izmir, Turkey.
authors.forename: Levent
authors.initials: L
authors.lastname: Horoz
authors.affiliation: Erol Kaya, Department of Orthopaedics & Traumatology, Dokuz Eylul University, Faculty of Medicine, Izmir, Turkey.
authors.forename: Erol
authors.initials: E
authors.lastname: Kaya
authors.affiliation: Ahmet Karakasli, Department of Orthopaedics & Traumatology, Dokuz Eylul University, Faculty of Medicine, Izmir, Turkey.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Karakasli
authors.affiliation: Eyad Skiak, Karatas Hospital, Izmir, Turkey.
authors.forename: Eyad
authors.initials: E
authors.lastname: Skiak
authors.affiliation: Onur Basci, Department of Orthopaedics & Traumatology, Dokuz Eylul University, Faculty of Medicine, Izmir, Turkey.
authors.forename: Onur
authors.initials: O
authors.lastname: Basci
keywords: Blood transfusion; Orthopaedic surgery; Renal functions