Enfluence Of Irrigating Fluid Of Different Temperature On Shivering Of Patients Undergoing Transurethral Prostatectomy

Objective To evaluate the effects of unwarmed and warmed irrigating fluid on shivering of patients during transurethral prostatectomy.Methods Thirty ASAⅡ-Ⅲpatients undergoing TURP were randomly divided into two groups (n=15each) according to the temperature of irrigating fluid. The irritating fluid in group A was heated up to 35℃-37℃, while group B was received irrigating fluid with room temperature. The age, weight, IPSS, ratio of heart-brain-lung complications and anesthesia (epidural anesthesia), irrigating time, volume of irrigating fluid all had no statistic differences between the two groups. The room temperature and humidity was set by the central air conditioning at 24℃-26℃and 40%-50% before the patients entering. All the patients were injected atropine 0.5mg 30 minutes before anesthesia, and the blood pressure, heart rate and saturation of oxygen were monitored 10min after their entering. Epidural anesthesia with 0.89% ropivacaine was performed at L2-L3 space after 2 millilitre lower leg venous blood colloected. Ringer's solution and succinylated gelatin were warmed to 35℃-37℃and transfued to the patients at 4-6 ml/ ( kg·h) speed during operation. The irrigating fluid was all 5% glucose, the volume of which was 20000 millilitre on average. Mean atrial pressure (MAP), heart rate(HR), saturation of oxygen (SaO2), core temperatrue and the number of shivering cases were monitored and recorded, and 2 millilitre lower leg venous blood was collected after operation. Then the preoperative and postoperative ET-1 of lower leg venous blood collected above was mersured with human endothelin-1 kit according to instructions. All the results were analyzed by SPSS11.5 software.Results The two groups'postoperative MAP was decreased compared with the preoperative level, and it showed singnificant difference (P<0.05). In patients of group B, the MAP and core temperature, at the time of 45 minutes in the process of TURP and postoperation, was largely decreased, which was singnificant difference compared with those in the preoperative level (P<0.05 and P<0.01). Besides, the core temperature of patients of group B, was markedly lower than that of group A (P<0.01). The postoperative ET-1 of lower leg vein of the two groups was decreased compared with preoperative one, but there was no singnificant difference between them. The incidence rate of shivering during and after operation of group A was singnificant lower than that of group B.Conclusion Warmed irrigating fluid may help to maintain the temperature in the normal level and decrease the rate of shivering during TURP.