Abstract:Objective:To investigate the variations of hemodynamics or respiratory parameters and postoperative complication incidence in laparoscopic rectal cancer surgery to perform the supreme LMA and Tracheal Tubes and to assess the safety or superiority. Methods:Forty ASAⅠ-Ⅱgrade patients underwent rectal cancer surgery were randomly divided into two groups: Supreme LMA group(S), Tracheal Tube group (T). Patients were intubated with supreme LMA, Tracheal Tube respectively after general anesthesia was induced with midazolam 0.05 mg/kg, fentanyl 2 μg/kg, etomidate 0.3 mg/kg and vecuronium 0.1 mg/kg. Record and count baseline or variable valus on systonic pressure, dystonic pressure, heart rate, peak inspiration pressure, flat inspiration pressure as pre- and post-pneumoperitoneum, head down tilt. To observe intra- and post-operation complication on backflow or aspiration, pharyngodynia, trachyphonia, irritating cough.Results:The hemodynamic during intubation and respiratory parameters were more stable in group S than in group T (P<0.05). There were no differences on backflow or aspiration during intraoperation between two groups. Postoperation incidences were significantly lower in group S than group T on trachyphonia, pharyngalgia or bucking(P<0.05).Conclusions:LMA supremeTMventilation is effective as well as tracheal tube in rectal cancer surgery. It impacts little variations of hemodynamics or respiratory parameters after general anesthesia and reduces incidence of complications significantly compared with T group. In addition, the method is simple. LMA supremeTMis safer and superior to tracheal tubes on clinical applications.