The results of this study suggest that preoperative warming can reduce rates of SSI after surgery .
OBJECTIVE To determine whether preoperative warming can reduce the risk of surgical site infection ( SSI ) after surgery .
BACKGROUND Intraoperative hypothermia is a risk factor for the occurrence of  SSI in patients after surgery .
However , the effectiveness of preoperative warming in reducing the incidence of the condition remains unclear .
Effect of Prewarming during Induction of Anesthesia on Microvascular Reactivity in Patients Undergoing Off-Pump Coronary Artery Bypass Surgery: A Randomized Clinical Trial
Background General anesthesia may induce inadvertent hypothermia and this may be related to perioperative cardiovascular complications . Microvascular reactivity , measured by the recovery slope during a vascular occlusion test , is decreased during surgery and is also related to postoperative clinical outcomes . We hypothesized that microvascular changes during surgery may be related to intraoperative hypothermia . To evaluate this , we conducted a r and omized study in patients undergoing off-pump coronary artery bypass surgery , in which the effect of prewarming on microvascular reactivity was evaluated . Methods Patients scheduled for off-pump coronary artery bypass surgery were screened . Enrolled patients were r and omized to the prewarming group to receive forced-air warming during induction of anesthesia or to the control group . Measurement of core and skin temperatures and vascular occlusion test were conducted before anesthesia induction , 1 , 2 , and 3 h after induction , and at the end of surgery . Results In total , 40 patients were enrolled and finished the study ( n = 20 in the prewarming group and n = 20 in the control group ) . During the first 3 h of anesthesia , core temperature was higher in the prewarming group than the control group ( p < 0.001 ) . The number of patients developing hypothermia was lower in the prewarming group than the control group ( 4/20 vs. 13/20 , p = 0.004 ) . However , tissue oxygen saturation and changes in recovery slope following a vascular occlusion test at 3 h after anesthesia induction did not differ between the groups . There was no difference in clinical outcome , including perioperative transfusion , wound infection , or hospital stay , between the groups . Conclusions Prewarming during induction of anesthesia decreased intraoperative hypothermia , but did not reduce the deterioration in microvascular reactivity in patients undergoing off-pump coronary artery bypass surgery . Trial Registration Clinical Trials.gov
The results of this study suggest that preoperative warming can reduce rates of SSI after surgery .
OBJECTIVE To determine whether preoperative warming can reduce the risk of surgical site infection ( SSI ) after surgery .
BACKGROUND Intraoperative hypothermia is a risk factor for the occurrence of  SSI in patients after surgery .
However , the effectiveness of preoperative warming in reducing the incidence of the condition remains unclear .