The Factors Affecting Body Temperature Changes During Retograde Intrarenal Surgery

Abstract

Objectives: When compared to other endourologic operations, irrigation fluid with lower flow rate and volume is used during retrograde intrarenal surgery (RIRS). In our study, body temperature changes occurring due to irrigation fluid and factors affecting these were assessed. Materials and Methods: One hundred and twenty-eight patients were prospectively included in the study. During operations, a standart izotonic irrigation fluid kept in the operating room at 21 °C was used. Active heating was not applied to any patient. Body temperature of patients was measured peripherally before anesthesia induction and before recovery. Relationship of body temperature differences with patient characteristics, operation time, irrigation fluid volüme and stone size was evaluated. Results: Mean tympanic body temperature was 36,3±0,35°C at the start of operation and 35,8±0,5°C at the end. Post-operative fall in body temperature (0,67±0,47°C) was recorded in 102 patients (79.7%). When body tempertaure values before and after the operation were compared, a significant reduction was found (p<0,0001). No statistically significant correlation was obtained between this reduction and patient and operative data. Conclusion: Body temperature falls after RIRC however, no relation was found between temperature change and patient and operative data other than operating room temperature.

Keywords

• intraoperative hypothermia
• irrigation solutions
• retrograde intrarenal surgery
• thermoregulation