目的:探讨压舌板辅助手法放置可弯曲喉罩的可行性。方法:选择拟于可弯曲喉罩全麻下行择期手术的患者64例,性别不限,年龄18~80岁,ASAⅠ~Ⅲ级。采用随机信封法将其分为标准手指引导组和压舌板辅助组,每组32例。分别记录两组喉罩置入时间...目的:探讨压舌板辅助手法放置可弯曲喉罩的可行性。方法:选择拟于可弯曲喉罩全麻下行择期手术的患者64例,性别不限,年龄18~80岁,ASAⅠ~Ⅲ级。采用随机信封法将其分为标准手指引导组和压舌板辅助组,每组32例。分别记录两组喉罩置入时间、口咽部泄露压、纤维支气管镜视野评分和首次置管成功率及术后24 h内咽痛的发生情况。结果:最终62例患者的资料纳入统计分析,标准手指引导组31例、压舌板辅助组31例。压舌板辅助组患者纤维支气管镜视野评分高于标准手指引导组( Z =-4.241, P <0.001);压舌板辅助组口咽部泄露压高于标准手指引导组( t =-4.474, P <0.001)。与标准手指引导组患者相比,压舌板辅助组置管时间较长( t =-15.171, P <0.001)。压舌板辅助组首次置管成功率(100%)与标准手指引导组(93.55%)差异无统计学意义。两组患者术后24 h内均未发生咽痛情况。结论:压舌板辅助法置入可弯曲喉罩可明显提高喉罩对位准确率,提高喉罩口咽部密闭性,且不增加术后咽痛的发生率,值得在临床工作中推广应用。展开更多
For the design of pressurized circulating fluidized beds, experiments were conducted in a small cyclone with 120 mm in diameter and 300 mm in height at high pressures and at atmospheric temperatures. Influence of air ...For the design of pressurized circulating fluidized beds, experiments were conducted in a small cyclone with 120 mm in diameter and 300 mm in height at high pressures and at atmospheric temperatures. Influence of air leakage from the stand pipe into the cyclone was specially focused. A semi-empirical model was developed for the prediction of the pressure drop of the cyclone separator at different operate pressures with the effect of air leakage and inlet solid loading. The operate pressure, air leakage and inlet solid loading act as significant roles in cyclone pressure drop. The pressure drop increases with the increasing of pressure and decreases with the increasing of the flow rate of air leakage from the standpipe and with the increasing of the inlet solid loading.展开更多
文摘目的:探讨压舌板辅助手法放置可弯曲喉罩的可行性。方法:选择拟于可弯曲喉罩全麻下行择期手术的患者64例,性别不限,年龄18~80岁,ASAⅠ~Ⅲ级。采用随机信封法将其分为标准手指引导组和压舌板辅助组,每组32例。分别记录两组喉罩置入时间、口咽部泄露压、纤维支气管镜视野评分和首次置管成功率及术后24 h内咽痛的发生情况。结果:最终62例患者的资料纳入统计分析,标准手指引导组31例、压舌板辅助组31例。压舌板辅助组患者纤维支气管镜视野评分高于标准手指引导组( Z =-4.241, P <0.001);压舌板辅助组口咽部泄露压高于标准手指引导组( t =-4.474, P <0.001)。与标准手指引导组患者相比,压舌板辅助组置管时间较长( t =-15.171, P <0.001)。压舌板辅助组首次置管成功率(100%)与标准手指引导组(93.55%)差异无统计学意义。两组患者术后24 h内均未发生咽痛情况。结论:压舌板辅助法置入可弯曲喉罩可明显提高喉罩对位准确率,提高喉罩口咽部密闭性,且不增加术后咽痛的发生率,值得在临床工作中推广应用。
基金Financial support from The Ministry of Science and Technology of China (Contract No.2003AA529220)
文摘For the design of pressurized circulating fluidized beds, experiments were conducted in a small cyclone with 120 mm in diameter and 300 mm in height at high pressures and at atmospheric temperatures. Influence of air leakage from the stand pipe into the cyclone was specially focused. A semi-empirical model was developed for the prediction of the pressure drop of the cyclone separator at different operate pressures with the effect of air leakage and inlet solid loading. The operate pressure, air leakage and inlet solid loading act as significant roles in cyclone pressure drop. The pressure drop increases with the increasing of pressure and decreases with the increasing of the flow rate of air leakage from the standpipe and with the increasing of the inlet solid loading.
