Supreme喉罩用于妇科腹腔镜手术患者气道管理的效果

目的 评价Supreme喉罩用于妇科腹腔镜手术患者气道管理的效果.方法 择期行妇科腹腔镜手术的患者80例,ASA分级Ⅰ或Ⅱ级,年龄40～64岁,体重50～70 kg,身高158～170 cm,Mallampatis分级Ⅰ或Ⅱ级,随机分为2组(n=40):Supreme喉罩组(S组)和ProSeal喉罩组(P组).麻醉诱导后置入喉罩,行机械通气,并经引流管置入胃管.记录手术时间、气腹时间、清醒时间、喉罩置入时间、喉罩及胃管置入情况;记录喉罩囊内压为60 cm H2O时的充气量和气道密封压,并采用纤维支气管镜进行通气罩咽部解剖结构显露分级;术中监测BP、HR、ECG、SpO2、PETCO2,记录术后咽喉部不良反应的发生情况.结果 两组手术时间、气腹时间、清醒时间比较差异无统计意义(P＞0.05).两组术中BP、HR、SpO2、PETCO2、气道峰压均在正常范围,组间比较差异无统计学意义(P＞0.05).与P组比较,S组喉罩一次置入成功率、胃管一次置入成功率升高,喉罩置入时间缩短,通气罩咽部解剖结构显露分级升高,术后喉罩带血的发生率降低(P＜0.05);两组喉罩置入成功率均为100%,喉罩置入成功率、气道密封压、喉罩充气量比较差异均无统计学意义(P＞0.05).结论 Supreme喉罩通气效果好,气道密封性可靠,易于置入,可安全有效地用于妇科腹腔镜手术患者的气道管理.     

注射器活塞回弹法限制Supreme喉罩套囊压力的效果

目的 评价注射器活塞回弹法限制Supreme喉罩套囊压力的效果.方法 择期喉罩通气下全麻患者60例,年龄22～64岁,性别不限,体重指数18 ～ 30 kg/m2,ASA分级Ⅰ或Ⅱ级.麻醉诱导后根据患者体重置入相应型号的Supreme喉罩(3号:≤50 kg,4号:＞50 kg).纤维支气管镜确定喉罩对位良好后,喉罩套囊充气至35 cmH2O行机械通气.用20 ml注射器在手持测压计监测下充气至喉罩套囊压力分别为60、80、100、120 cm H2O时停留10s,让注射器活塞自然回弹,记录活塞停止回弹时喉罩套囊内的压力及气道密闭压.结果 注射器活塞停止回弹时,3号和4号喉罩的残余囊内压的95％可信区间均低于60 cm H2O,气道密闭压的95％可信区间均超过20 cm H2O.3号和4号Supreme喉罩的残余囊内压和气道密闭压比较差异无统计学意义(P＞0.05).结论 20 ml注射器活塞回弹法能够较好地防止Supreme喉罩套囊内压力过高.     

全麻手术患者LMAS喉罩和SLIPA喉罩气道管理的效果

目的 比较全麻手术患者LMAS喉罩和SLIPA喉罩气道管理的效果.方法 择期全麻手术患者80例,年龄18～70岁,体重45～80 kg,ASA分级Ⅰ或Ⅱ级,随机分为2组(n=40):LMAS喉罩组(L组)和SLIPA喉罩组(S组).麻醉诱导后置入喉罩,行机械通气.记录MAP和HR、喉罩置入情况、喉罩置入时间、气道密闭压、最高气道压、平均气道压、置入喉罩后返流和误吸的发生情况、拔除喉罩后粘血的发生情况及术毕和术后24 h内咽痛的发生情况.结果 两组MAP和HR差异无统计学意义(P＞0.05).两组喉罩全部置入成功,一次置入成功率差异无统计学意义(P＞0.05).与L组比较,S组喉罩置入时间延长,气道密闭压降低(P＜0.05),最高气道压和平均气道压差异无统计学意义(P＞0.05).两组均未发生返流和误吸.与L组比较,S组喉罩粘血和术毕咽痛的发生率升高(P＜0.05),术后24 h内咽痛的发生率差异无统计学意义(P＞0.05).结论 LMAS喉罩和SLIPA喉罩置入简单易行,气道密封效果好,可有效保证通气,不良反应少.LMAS喉罩用于全麻手术患者气道管理的效果更好.     

依据气道峰压设置喉罩套囊内压的临床效果

目的观察全麻喉罩通气过程中能封闭气道的最小套囊内压(intracuff pressure,ICP)设置的效果。方法全麻下择期行妇科腹腔镜手术患者60例,年龄18~65岁,ASAⅠ或Ⅱ级,随机分为压力调控组(P组)和对照组(C组),每组30例。全麻诱导后插入4号Supreme喉罩,向套囊内注入空气,使ICP达60 cm H2O。行容量控制通气,记录气道峰压(peak pressure,Ppeak)。P组将喉罩套囊内气体抽净后,向套囊内充气至ICP达Ppeak水平,如漏气,每次增加5 cm H2O,直至无气体从口咽部漏出。气腹建立后,P组套囊充气恢复至60 cm H2O,再次记录Ppeak后重复以上操作,并以此作为封闭气道的最小ICP直至手术结束。C组ICP保持为60 cm H2O。记录气腹前和气腹后Ppeak、ICP和套囊充气容量;测定呼气相和吸气相ICP;记录吸气VT(VTi)和呼气VT(VTe),计算漏气率=[(VTi-VTe)/VTi×100%];记录术后24 h咽喉部并发症情况。结果与C组比较,P组在气腹前和气腹后呼气相和吸气相ICP均明显降低(P0.05)。气腹前和气腹后P组套囊充气容量明显低于C组(P0.05)。与气腹前比较,气腹后两组漏气率均明显升高(P0.05)。与C组比较,P组术后咽喉痛及吞咽不适的发生率明显降低(P0.05)。结论全麻喉罩通气过程中将ICP设置在Ppeak+0~5 cm H2O,可产生良好的密封效果,且可减少咽喉部并发症的发生。     

i-gel喉罩用于腹腔镜胆囊手术患者气道管理的效果

目的 评价i-gel喉罩用于腹腔镜胆囊手术患者气道管理的效果.方法 择期全麻下拟行腹腔镜胆囊手术患者120例,性别不限,ASA分级Ⅰ或Ⅱ级,年龄34～62岁,体重45～90 kg,随机分为2组(n=60):ProSeal喉罩组(P组)和i-gel喉罩组(Ⅰ组).根据体重选择喉罩型号,麻醉诱导后置入喉罩,行机械通气,并经引流管放置胃管.记录喉罩置入次数、喉罩及胃管置入情况、纤支镜检查评分,测定喉罩密封压,观察术中口咽部漏气、低氧血症的发生情况.术中监测SpO2、PETCO2、气道峰压,观察拔除喉罩后恶心、呕吐、呛咳、声嘶、咽喉痛、返流误吸的发生情况,记录麻醉时间、手术时间、拔除喉罩时间及苏醒时间.结果 两组麻醉时间、手术时间、拔除喉罩时间及苏醒时间差异无统计学意义(P＞0.05).两组术中SpO2、PETCO2、气道峰压均在正常范围内.与P组比较,Ⅰ组喉罩首次置入成功率和纤支镜检查评分升高,喉罩置入时间缩短(P＜0.05).两组喉罩和胃管置入成功率均为100%;Ⅰ组和P组喉罩密封压比较差异无统计学意义(P＞0.05);Ⅰ组咽喉痛发生率低于P组(P＜0.05),恶心呕吐、呛咳发生率差异无统计学意义(P＞0.05),两组无一例发生声嘶、返流误吸.结论 i-gel喉罩易于置入,气道密封性可靠,通气效果好,不良反应少,可安全有效地用于腹腔镜胆囊手术患者的气道管理.     

腹腔镜手术患者CLMA喉罩、SLIPA喉罩与PLMA喉罩气道管理的效果

目的 比较经典型喉罩(CLMA喉罩)、SLIPA喉罩和食管引流型喉罩(PLMA喉罩)用于腹腔镜手术患者气道管理的效果.方法 择期行腹腔镜手术患者123例,年龄20～64岁,ASA分级Ⅰ或Ⅱ级,随机分为3组:CLMA组(C组,n=41)、SLIPA组(S组,n=42)和PLMA组(P组,n=40).麻醉诱导后置入喉罩,行间歇正压通气.测定气道密封压后实施气腹.评估喉罩置入难易性.记录首次喉罩置入情况、喉罩置入时间、麻醉恢复时间和不良反应的发生情况.于气腹前及气腹压至12 mm Hg时记录气道吸气峰压(PIP)及气道密封压＜PIP的发生情况.结果 C组有1例患者更换喉罩型号后置入成功,其余患者均首次喉罩置入成功,组间比较差异无统计学意义(P＞0.05).与C组比较,S组喉罩置入时间和麻醉恢复时间缩短,喉罩置入容易,P组喉罩置入时间延长,气道密封压升高,气道密封压＜PIP的患者减少(P＜0.05).与S组比较,P组喉罩置入时间和麻醉恢复时间延长,喉罩置入稍难,气道密封压升高,气道密封压＜PIP的患者减少(P＜0.05).与气腹前比较,各组气腹至12 mm Hg时PIP升高(P＜0.05).三组患者不良反应发生率比较差异无统计学意义(P＞0.05).结论 CLMA喉罩、SLIPA喉罩和PLMA喉罩均可保证有效通气,不良反应少.SLIPA喉罩置入更简单,而PLMA喉罩气道密封效果好,更适用于腹腔镜手术患者.     

I-gel喉罩与Supreme喉罩在腹腔镜肾脏手术中的应用比较

目的比较I-gel喉罩与Supreme喉罩在侧卧位腹腔镜肾脏手术中的应用效果。方法静脉全麻下侧卧位腹腔镜肾脏手术患者80例,随机均分为两组,分别使用I-gel喉罩(I组)和Supreme喉罩(S组)通气。记录首次插入成功率、插入时间、平卧位和侧卧位纤维支气管镜检查评级情况以及手术时间、苏醒时间、拔除喉罩时间;记录麻醉前(T1)、喉罩插入成功后5min(T2)、侧卧位后5min(T3)、气腹建立后20min(T4)、术毕时(T5)的气道峰压(Ppeak)及气道密封压(Pleak);记录患者咽喉部损伤情况。结果 I组中喉罩首次插入成功率为92.5%,明显高于S组的72.5%(P0.05);I组插入时间为(0.8±0.4)min,明显短于S组的(1.4±0.6)min(P0.05);I组纤维支气管镜评级优于S组(P0.05),S组平卧位时纤维支气管镜评级优于侧卧位(P0.05),I组Pleak明显高于S组(P0.05)。术毕时I组咽喉部疼痛发生率明显低于S组(P0.05)。结论 I-gel喉罩和Supreme喉罩用于侧卧位腹腔镜肾脏手术麻醉中均可有效通气,前者具有插入更方便快捷、插入成功率高、不需气囊充气、气道密封好及损伤小等优点。     

ProSeal喉罩、Supreme喉罩与Ⅰ-gel喉罩用于腹腔镜胆囊切除术患者气道管理效果的比较

食管引流型喉罩是困难气道插管的重要工具之一,其在置入过程中诱发的心血管反应较气管插管轻微,并且麻醉后便于放置胃引流管,因面广泛用于临床.ProSeal喉罩、Supreme喉罩与I-gel喉罩均为食管引流型喉罩.ProSeal喉罩是可重复使用的双套囊充气型喉罩,Supreme喉罩是一次性双套囊充气型喉罩,I-gel喉罩是一次性无套囊非充气型喉罩.本研究拟比较ProSeal喉罩、Supreme喉罩与Ⅰ-gel喉罩用于腹腔镜胆囊切除术患者气道管理的效果,为临床提供参考.资料与方法本研究已获本院医学伦理委员会批准,并与患者签署知情同意书.拟在全身麻醉下行腹腔镜胆囊切除术患者120例,性别不限,年龄35 ～ 60岁,体重45～90 kg,ASA分级Ⅰ或Ⅱ级.无咽喉部炎症和胃-食管返流病史;无药物过敏史;心、肺、肝及肾功能未见异常.采用随机数字表法,将患者随机分为3组(n=40):ProSeal喉罩组(P组)、Supreme喉罩组(S组)、1-gel喉罩组(Ⅰ组).分别采用ProSeal喉罩(ProSeal Mask 公司,新加坡)、Supreme喉罩(Laryngeal Mask公司,新加坡)和I-gel喉罩(Intersurgical公司,英国),根据患者体重选择不同喉罩型号:P组和S组30 ～ 50 kg选择3号,51～70 kg选择4号,71～ 100 kg选择5号;Ⅰ组30 ～ 60 kg选择3号,61～ 100 kg选择4号.     

ProSeal喉罩用于体外循环心内直视术患儿气道管理的效果

目的 评价ProSeal喉罩用于体外循环心内直视术患儿气道管理的效果.方法 择期拟行心内直视术患儿76例,年龄3月～8岁,体重3.3～34.5 kg,性别不限,ASA分级Ⅱ级,心功能分级Ⅰ或Ⅱ级,随机分为2组(n=38):气管导管组(T组)和ProSeal喉罩组(P组).麻醉诱导后,T组置入气管导管,P组置入ProSeal喉罩,行机械通气.记录气管导管和喉罩的置入情况、置入时间、最高气道压、术中低氧血症、心动过速、心动过缓、低血压和高血压的发生情况、术后喉头水肿、吞咽困难、呛咳、呼吸困难、声音嘶哑的发生情况.结果 气管导管和ProSeal喉罩全部置入成功.两组术中均未见低氧血症、心动过速、心动过缓、低血压和高血压的发生.与T组比较,P组置入时间缩短,喉头水肿和吞咽困难的发生率降低(P＜0.05),最高气道压、呛咳、呼吸困难和声音嘶哑的发生率差异无统计学意义(P＞0.05).结论ProSeal喉罩置入简单易行,可有效保证通气,对咽喉部刺激较小,用于体外循环心内直视术患儿的气道管理安全可靠.     

Supreme喉罩用于腹腔镜手术患者的临床观察

Supreme喉罩是根据ProSeal喉罩研制的新型一次性喉罩[1].本文观察Supreme喉罩用于腹腔镜手术患者气道管理的效果,为临床提供参考.资料与方法一般资料本研究经本院医学伦理委员会批准,患者均签署知情同意书.择期全麻下行腹腔镜手术患者60例,年龄24～60岁,体重51～86 kg,ASA Ⅰ或Ⅱ级,Mallampati Ⅰ～Ⅲ级,无咽喉部炎症,肺功能未见异常.患者随机均分为Supreme喉罩组(S组)和ProSeal喉罩组(P组).     

i-gel喉罩用于妇科腹腔镜手术患者气道管理的效果

目的 评价i-gel喉罩用于妇科腹腔镜手术患者气道管理的效果.方法 择期全麻下拟行妇科腹腔镜手术患者60例,ASA分级Ⅰ或Ⅱ级,年龄21～64岁,体重45～90 kg,Mallampatti分级Ⅰ～Ⅲ级,采用随机数字表法,将其随机分为2组(n=30):i-gel喉罩组(I组)和Supreme喉罩组(S组).根据体重选择喉罩型号,麻醉诱导后置入喉罩,经引流管放置胃管,行机械通气.记录喉罩置入时间、置入次数、胃管置入次数、喉罩密封压、纤维支气管镜检查分级、术中血液动力学指标、通气指标、麻醉时间和苏醒时间,记录拔除喉罩后咽喉痛、吞咽痛和声音嘶哑的发生情况.结果 两组麻醉时间、苏醒时间、喉罩置入时间、纤维支气管镜检查分级、术中血液动力学指标和通气指标差异无统计学意义(P>0.05).两组喉罩和胃管置入成功率均为100%.与S组比较,I组喉罩密封压升高,咽喉痛和吞咽痛发生率降低(P<0.05或0.01).结论 i-gel喉罩气道密封性可靠,并发症少,可安全有效地应用于妇科腹腔镜手术患者的气道管理.

Abstract：

Objective To assess the efficacy of laryngeal mask airway (LMA) i-gel used in patients undergoing laparoscopic gynecological surgery. Methods Sixty ASA Ⅰ or Ⅱ patients, aged 21-64 yr, weighing 4590 kg, undergoing elective laparoscopic gynecological surgery, were randomized into 2 groups ( n = 30 each):LMA i-gel group (group Ⅰ) and LMA Supreme group (group S) . Mallampatti test was performed before operation in both groups. Anesthesia was induced with target-controlled infusion of propofol (target plasma concentration 2.5-4.0 μg/ml) and remifentanil (target plasma concentration 3-6 ng/ml) . After the patients lost consciousness, rocuronium 0.6 mg/kg was given to facilitate the LMA insertion. LMA i-gel and LMA Supreme were inserted in I and S groups respectively. A gastric tube was inserted through the drain tube of the LMA. In group S the air was injected into the cuff to make intracuff pressure reach 60 cm H2O after successful LMA insertion. The LMA placement time, the number of attempts of LMA insertion, the number of attempts of gastric tube placement, the airway sealing pressure, the parameters of hemodynamics and ventilation, and complications (sore throat, odynopliagia,hoarseness) were recorded. The fiberoptic laryngoscopy scores were assessed after successful LMA placement. The anesthesia time and recovery time were also recorded. Results There was no significant difference in the anesthesia time, recovery time, LMA placement time, fiberoptic bronchoscopy scores and the parameters of hemodynamics and ventilation between the two group. The success rates of LMA and gastric tube placement were 100% in both groups. The airway sealing pressure was significantly higher, while the incidence of sore throat and odynopliagia was significantly lower in group I than in group S. Conclusion LMA i-gel provides adequate ventilation during operation with fewer complications and can be used effectively for gynecological laparoscopic surgery.     

i-gel喉罩用于神经介入术患者气道管理的效果

目的 评价i-gel喉罩用于神经介入术患者气道管理的效果.方法 择期行神经介入术患者40例,ASA分级Ⅰ或Ⅱ级,年龄20～60岁,体重指数＜30 kg/m2,随机分为2组(n=20):i-gel喉罩组(Ⅰ组)和ProSeal喉罩组(P组).TCI异丙酚和瑞芬太尼麻醉诱导后置入喉罩,行机械通气,维持PETCO2 35～40 mm Hg,SpO2 99%～100%.于麻醉诱导前、诱导后即刻、置入喉罩后1、3、5 min和拔除喉罩即刻,记录BP和HR;记录喉罩置入成功情况、置入时间、漏气压和气道峰压;记录喉罩置入与拔除过程中呛咳、喉痉挛、血迹残留、误吸的发生情况;术后24 h内随访患者咽痛、声音嘶哑、腹胀腹痛的发生.结果 两组患者BP和HR均在正常范围内.两组喉罩置入成功率、喉罩置入时间和气道峰压比较差异无统计学意义(P＞0.05).与P组比较,Ⅰ组漏气压、血迹残留和咽痛的发生率降低(P＜0.05).结论 i-gel喉罩置入简单易行,气道密封效果好,可有效保证通气,不良反应少,可安全地用于神经介入术患者的气道管理.     

食管引流型喉罩间歇正压通气时头前屈位对气道密封压的影响

Objective To evaluate the influence of head anteflexion on airway sealing pressure during intermittent positive pressure ventilation(IPPV) with ProSeal laryngeal mask airway (PLMA) with an esophageal vent.Methods Fifty ASA Ⅰ or Ⅱ patients (20 males and 30 females), aged 18-51 ye are, weighing 50-70 kg and scheduled for elective plastic surgery under general anesthesia, were enrolled in this study. Anesthesia was induced with fentanyl 2 μg/kg, propofol 2 μg/kg and vecuromium 0.1 mg/kg. PLMA with an esophageal vent was inserted at 2 min after intravenous vecuronium injection.The airway sealing pressure, the anatomic position of the cuff and the efficacy of positive pressure ventilation were checked in the neutral and anteflexed head positions with the cuff deflated and inflated to an intracuff pressure of 60 cm H2 O, respectively.Results The lungs were better ventilated in the head anteflexion position than in the head neutral position whether the cuff was deflated or inflated. There was no significant difference in the volume of air required to achieve an intracuff pressure of 60 cm H2O between the two head positions ( P＞ 0.05). The airway seating pressure increased from (27 ± 6) cm H2O in the head neutral position to (33 ± 6) cm H2O in the head anteflexion position, with no significant difference between them ( P＞ 0.05). The expired tidal volume and the peak inspiratory pressure during IPPV were (496 ± 81 ) ml and (14.3 ± 1.9) cm H2O respectively in the head neutral position and (496 ± 81 ) ml and ( 14.5 ± 2.1 )cm H2O respectively in the head anteflexion position.Conclusion Head anteflexion can significantly improve airway sealing but does not affect the anatomic position of the cuff.Appropriate head anteflexion is a simple and effective way to improve IPPV when the airway sealing pressure is inadequate in the head neutral position.     

Supreme喉罩用于腹腔镜手术患者气道管理的效果

目的 评价Supreme喉罩用于腹腔镜手术患者气道管理的效果.方法 择期全麻下行腹腔镜手术的患者120例,性别不限,年龄35～60岁,体重48～85 kg,ASA Ⅰ或Ⅱ级,Mallampatis Ⅰ～Ⅲ级,随机分为2组(n=60):Supreme喉罩组(S组)和气管插管组(T组).S组根据患者体重选择喉罩型号,麻醉诱导后置入喉罩,并经引流管放置胃管,T组在直接喉镜下行气管插管.记录气管插管或喉罩置入时间及置人情况;记录S组胃管置入状况和喉罩气道密封压,并行纤维支气管镜检查评分,以评价喉罩对位情况;记录术中SpO2、PrrCO2和气道峰压(Ppeak),记录拔除气管导管或喉罩后不良反应的发生情况;记录手术时间、麻醉时间、拔管时间和苏醒时间.结果 与T组比较,S组喉罩置入时间、拔管时间和苏醒时间缩短,拔除喉罩后低氧血症、呛咳、咽喉痛的发生率降低(P<0.05);两组均无返流误吸发生.各时点spO2、PETCO2、Ppeak均在正常范围内,组间比较差异无统计学意义(P>0.05).S组喉罩置入成功率和T组气管插管成功率比较差异无统计学意义(P>0.05),S组喉罩气道密封压为(25±4)cm H2O,喉罩对位准确率95%,胃管放置成功率100%.结论 Supreme喉罩通气效果好,气道密封性可靠,拔除后不良反应少,可安全有效地用于腹腔镜手术患者的全麻气道管理.     

The effects of head flexion on airway seal, quality of ventilation and orogastric tube placement using the ProSeal laryngeal mask airway

This prospective self-controlled study was designed to evaluate the influences of head flexion on airway seal, quality of ventilation, and orogastric tube placement through the ProSeal laryngeal mask airway (ProSeal LMA) in 80 anaesthetised, paralysed adult patients. After the ProSeal LMA was inserted and the cuff pressure was set at 5.9 kPa, ventilation quality, airway seal pressure, fibreoptic positions of the cuff and the drainage tube, orogastric tube placement and efficacy of intermittent positive pressure ventilation (IPPV) were assessed in two randomly selected positions: neutral and flexed position. When compared to the neutral head position, the head flexed significantly improved the airway seal pressure and the quality of ventilation of the ProSeal LMA (p < 0.05). Fibreoptic scores of the cuff position did not correlate with either the ability to obtain excellent or adequate ventilation through the ProSeal LMA or the ability to generate an airway seal pressure of >or= 2 kPa. Orogastric tube placement via the drainage tube was successful on the first attempt in all patients in the neutral position compared with seven failures following three attempts in the flexed position (p < 0.05). There were no significant differences between the two head positions in the volume of air required to obtain an intracuff pressure of 5.9 kPa, fibreoptic score of the drainage tube position, and expiratory tidal volume and peak inspiratory pressure during IPPV (p > 0.05). In conclusion, head flexion improves airway seal and ventilation quality of the ProSeal LMA. However, placement of an orogastric tube via the drainage tube is impaired in the flexed position compared to the neutral position. Fibreoptic scoring of the ProSeal cuff position is not an accurate test to assess the airway seal and ventilation function.     

The new perilaryngeal airway (CobraPLA) is as efficient as the laryngeal mask airway (LMA) but provides better airway sealing pressures

The Laryngeal Mask Airway (LMA) is a frequently used efficient airway device, yet it sometimes seals poorly, thus reducing the efficacy of positive-pressure ventilation. The Perilaryngeal Airway (CobraPLA) is a novel airway device with a larger pharyngeal cuff (when inflated). We tested the hypothesis that the CobraPLA was superior to the LMA with regard to insertion time and airway sealing pressure and comparable to the LMA in airway adequacy and recovery characteristics. After midazolam and fentanyl administration, 81 ASA physical status I-II outpatients having elective surgery were randomized to receive an LMA or CobraPLA. Anesthesia was induced with propofol (2.5 mg/kg IV), and the airway was inserted. We measured 1) insertion time; 2) adequacy of the airway (no leak at 15-cm-H2O peak pressure or tidal volume of 5 mL/kg); 3) airway sealing pressure; 4) number of repositioning attempts; and 5) sealing quality (no leak at tidal volume of 8 mL/kg). At the end of surgery, gastric insufflation, postoperative sore throat, dysphonia, and dysphagia were evaluated. Data were compared with unpaired Student's t-tests, chi2 tests, or Fisher's exact tests; P < 0.05 was significant. Patient characteristics, insertion times, airway adequacy, number of repositioning attempts, and recovery were similar in each group. Airway sealing pressure was significantly greater with CobraPLA (23 +/- 6 cm H2O) than LMA (18 +/- 5 cm H2O, P < 0.001). The CobraPLA has insertion characteristics similar to the LMA but better airway sealing capabilities.