Objective To evaluate the effects of intraoperative warming with and without 1 hour of preoperative warming, in preventing intraoperative and postoperative hypothermia. Methods Thirty ASA physical status I and II female patients scheduled for elective abdominal surgery received standard general anesthesia. In 10 patients, no special precautions were taken ( Gl group ); 10 patients were submitted to preoperative and intraoperative active warming ( G2 group ); 10 patients were only warmed intraoperatively ( G3 group ). Temperatures were recorded at 30 min intervals. Results The patients in G2 had high skin and core temperatures than Gl group during two hours of anesthesia and the core temperatures were higher at 90 and 120 min than G3 group ( P <0.05 ). Patients in G2 and G3 were extubated early and none had shivering. In contrast, patients in Gl had low temperature and five patients shivered. Conclusion One hour of preoperative warning combined with intraoperative warming can prevent intra - or postoperative hypothermia and shivering and offer good conditions for early tracheal extubation.%目的 观察术中保暖联合或不联合术前1 h保暖,对全麻手术患者术中和术后低体温的影响.方法 收集30例美国麻醉师协会(ASA)分级I～Ⅱ级女性择期腹部手术常规全身麻醉患者.10例不给于保暖措施(G1组);10例术前1 h联合术中保暖(G2组);10例仅术中保暖(G3组).各组患者每30 min记录体温一次.结果 G2组患者手术2 h内体表和核心体均温高于G1组,其术中90 min和120 min核心体温高于G3组(P<0.05).G2和G3组术后拔管较早且无寒颤反应;G1组手术结束时体温较低且5例患者发生寒颤.结论 术前1 h联合术中保暖能避免全麻手术术中和术后低体温、寒颤发生,给拔管提供良好条件.
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