title: Effect of irrigation fluid temperature on core temperature and hemodynamic changes in transurethral resection of prostate under spinal anesthesia.
abstract: BACKGROUND
  Hypothermia is a frequent observation in elderly males undergoing transurethral resection of prostate (TURP) under spinal anesthesia. The use of irrigating fluids at room temperature results in a decrease body temperature. Warmed irrigating solutions have shown to reduce heat loss and the resultant shivering. Such investigation was not much tried in low resource settings.
  
  
  OBJECTIVE
  To compare the resultant change in core temperature and hemodynamic changes among patients undergoing TURP surgery under spinal anesthesia using warm and room temperature irrigation fluids.
  
  
  METHODS
  Randomized prospective study at a tertiary care center.
  
  
  METHODS
  This study was conducted on 40 male patients aged 50-85 years undergoing TURP under spinal anesthesia. Of which, 20 patients received irrigation fluid at room temperature 21°C and 20 patients received irrigation fluid at 37°C after random allocation. Core temperatures and hemodynamic parameters were assessed in all patients at preoperative, intra-operative, and postoperative periods. Intra-operative shivering was also noted in both groups.
  
  
  METHODS
  Unpaired and Paired Student's t-test.
  
  
  RESULTS
  For patients who underwent irrigation with fluid at room temperature Core temperature drop from 36.97°C in preoperative to 34.54°C in postoperative period with an effective difference of 2.38°C. Among patients who received warmed irrigation fluid at 37°C had core temperature drop from 36.97°C to 36.17°C and the effect of fall was 0.8°C. This difference was statistically significant (P < 0.001). Shivering of Grades 1 and 2 was observed in nine patients, of Group 1 while only three patients had Grades 1 and 2 shivering in Group 2. The hemodynamic parameters were similar in the two groups and did not reach significant difference.
  
  
  CONCLUSIONS
  Use of warm irrigation fluid during TURP reduces the risk of perioperative hypothermia and shivering.
authors.affiliation: Department of Anaesthesiology, Himalayan Institute of Medical Sciences, Dehradun, Uttarakhand, India.
authors.forename: Rajeev
authors.initials: R
authors.lastname: Singh
authors.affiliation: Department of Anaesthesiology, Himalayan Institute of Medical Sciences, Dehradun, Uttarakhand, India.
authors.forename: Veena
authors.initials: V
authors.lastname: Asthana
authors.affiliation: Department of Anaesthesiology, Himalayan Institute of Medical Sciences, Dehradun, Uttarakhand, India.
authors.forename: Jagdish P
authors.initials: JP
authors.lastname: Sharma
authors.affiliation: Department of Anaesthesiology, Himalayan Institute of Medical Sciences, Dehradun, Uttarakhand, India.
authors.forename: Shobha
authors.initials: S
authors.lastname: Lal
keywords: Core temperature; hypothermia; irrigating fluid; spinal anesthesia; transurethral resection of prostate