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无齿或缺齿是引起面罩漏气的主要原因。目前为止还没有有效的防止无齿老人的面罩漏气的方法。我们设计了一款口面部支撑器,试图解决缺齿引起的面罩漏气。选取186例进行择期手术并实施全身麻醉的患者入组,其中,116名无齿患者随机分为A、B两组,A组患者使用口面部支撑器,B组患者不使用任何措施;剩余70例患者牙齿健全,设为C组。麻醉诱导后由具有10年工作经验的麻醉医师实施单手面罩通气。记录实际呼出气潮气量、指脉氧饱和度(SpO2)、血压及心率。A、C两组患者的漏气量显著低于B组患者(P<0.05)。A、B、C三组患者面罩通气成功率分别为83.3%、17.9%、75.7%。A、C两组患者通气成功率无统计学差异,并且均显著高于B组(P<0.05)。本研究结果表明我们设计的口面部支撑器可以将无齿患者的通气成功率提高至83.3%,与牙齿健全患者通气成功率相似。
No teeth or missing teeth is the main cause of mask leaks. So far there is no effective way to prevent the leakage of the mask of the toothless elderly. We designed a mouthpiece supporter to try to solve the mask leak caused by missing teeth. One hundred and sixty-six patients undergoing elective surgery and general anesthesia were enrolled. Among them, 116 patients without tooth were randomly divided into A and B groups. A group received oral supporter while B group did not use any measures. The remaining 70 Patients with healthy teeth, set to C group. One-hand mask ventilation is performed by anesthesiologists with 10 years of experience after induction of anesthesia. Record the actual expiratory tidal volume, referring to the pulse oxygen saturation (SpO2), blood pressure and heart rate. The amount of air leaks in patients A and C were significantly lower than those in patients in group B (P <0.05). The success rates of mask ventilation in group A, B and C were 83.3%, 17.9% and 75.7% respectively. There was no significant difference in the success rate of ventilation between groups A and C, which were significantly higher than those in group B (P <0.05). The results of this study show that the oral supporter we designed can increase the success rate of ventilation in patients without teeth to 83.3%, similar to the success rate of ventilation in patients with healthy teeth.