title: Warming of intravenous fluids prevents hypothermia during off-pump coronary artery bypass graft surgery.
abstract: OBJECTIVE
  Even mild perioperative hypothermia (34 degrees -36 degrees C) can cause numerous adverse outcomes, including morbid cardiac events, coagulopathy with increased blood loss, and a decreased resistance to surgical wound infection. The purpose of this study was to evaluate the effect of fluid warming on preventing hypothermia during off-pump coronary artery bypass (OPCAB) surgery.
  
  
  METHODS
  A prospective randomized clinical study.
  
  
  METHODS
  A tertiary care university hospital.
  
  
  METHODS
  Forty patients undergoing OPCAB procedures.
  
  
  METHODS
  Patients were randomized into control (n = 20) and Hotline (n = 20) groups. In the Hotline group, all intravenous fluids were warmed to 41 degrees C by using 2 Hotline (SIMS Inc, Rockland, MD) systems. All patients (control and Hotline groups) were managed with standardized institutional practice by using a combination of increased ambient operating room temperature (to 25 degrees C) and the use of a warmed water mattress (38 degrees C).
  
  
  RESULTS
  Temperatures were recorded every hour after the induction of anesthesia at the pulmonary artery, nasopharynx, rectum, and bladder. In the Hotline group, temperatures were maintained or increased. In the control group, temperatures gradually decreased. There were no significant differences between the 2 groups in hemodynamic parameters, serum catecholamine concentrations, duration of intensive care unit stay, or duration of ward stay.
  
  
  CONCLUSIONS
  The results show that the warming of intravenous fluids by using the Hotline system prevents decreases in systemic temperatures during OPCAB surgery.
authors.affiliation: Department of Anesthesiology and Pain Medicine, College of Medicine, University of Ulsan, Asan Medical Center, Seoul, Korea.
authors.forename: Sung-Moon
authors.initials: SM
authors.lastname: Jeong
authors.forename: Kyung-Don
authors.initials: KD
authors.lastname: Hahm
authors.forename: Yong-Bo
authors.initials: YB
authors.lastname: Jeong
authors.forename: Hong-Seuk
authors.initials: HS
authors.lastname: Yang
authors.forename: In-Cheol
authors.initials: IC
authors.lastname: Choi
mesh_terms: D000368:Aged; D001831:Body Temperature / Q000502:physiology; D001833:Body Temperature Regulation / Q000502:physiology; D047549:Coronary Artery Bypass, Off-Pump / Q000009:adverse effects*; D005260:Female; D005440:Fluid Therapy / Q000592:standards; D006801:Humans; D007035:Hypothermia / Q000517:prevention & control*; D007262:Infusions, Intravenous; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000379:methods; D011446:Prospective Studies; D017694:Rewarming / Q000295:instrumentation / Q000379:methods*