Brimacombe J, Berry A
Department of Anaesthesia, Royal Perth Hospital, Western Australia.
Anaesth Intensive Care. 1993 Feb;21(1):89-92. doi: 10.1177/0310057X9302100121.
The standard insertion technique (ST 0) for laryngeal mask airway insertion was compared to three alternative techniques in 120 patients. The alternative techniques included insertion using the standard approach, but with the cuff either semi-inflated (ST 0.5) or fully inflated (ST 1.0), and a non-standard approach using a back-to-front technique (like a Guedel airway) and with the cuff fully deflated (T 180). Successful insertion was judged by fibreoptic positioning (P < 0.02) and that confirmed that the ST 0 and T 180 were superior to ST 0.5 and ST 1.0 in terms of fibreoptic positioning (P < 0.02) and that insertion with the cuff deflated (ST 0 and T 180) resulted in fewer insertion failures than with the cuff inflated (ST 0.5 and ST 1.0) (P < 0.05). Insertion with the LMA back-to-front with the cuff deflated produced similar fibreoptic and functional results to the standard technique. In 23%, however, there was some residual rotation of 25-90% to the coronal plane.
在120例患者中，将喉罩气道插入的标准插入技术（ST 0）与三种替代技术进行了比较。替代技术包括采用标准方法插入，但套囊半充气（ST 0.5）或完全充气（ST 1.0），以及采用非标准方法，即采用从后向前技术（如古德伊尔气道）且套囊完全放气（T 180）。通过纤维光学定位判断插入是否成功（P<0.02），结果证实，在纤维光学定位方面，ST 0和T 180优于ST 0.5和ST 1.0（P<0.02），并且套囊放气插入（ST 0和T 180）导致的插入失败比套囊充气插入（ST 0.5和ST 1.0）少（P<0.05）。套囊放气、从后向前插入喉罩产生的纤维光学和功能结果与标准技术相似。然而，在23%的病例中，存在25 - 90%向冠状面的残余旋转。
