Randell T, Valli H, Hakala P
Department of Anaesthesiology, Helsinki University Hospital, Finland.
Eur J Anaesthesiol. 1997 Jul;14(4):380-4. doi: 10.1046/j.1365-2346.1997.00134.x.
The most common indication for employing the fibreoptic technique for intubation is when a difficult intubation is anticipated. It may also be used when intubation unexpectedly proves difficult with a rigid laryngoscope in anaesthetized patients. However, failures with orotracheal fibreoptic intubation have been reported in up to 9.5% of cases, although only two possible equipment related causes of intubation difficulties have been identified. The Berman intubating airway and the Ovassapian intubation airway in fibreoptic orotracheal intubation have been compared in 65 patients. The study was randomized and for fibreoptic endoscopy each patient served as his or her own control. The results indicate that both airways can be used for orotracheal fibreoptic intubation in anaesthetized patients. The Berman airway offers easier visualization of the vocal cords than the Ovassapian airway, provided that the Berman airway is of an adequate size and positioned in the midline. Upon impingement of the intubation tube, completing the tracheal intubation is more difficult with the Berman airway than the Ovassapian airway.
采用纤维光学技术进行气管插管最常见的指征是预计会出现插管困难的情况。在麻醉患者中，当使用硬质喉镜意外发现插管困难时，也可使用该技术。然而，据报道经口纤维光学气管插管失败率高达9.5%，尽管仅确定了两种可能与设备相关的插管困难原因。对65例患者在纤维光学经口气管插管中使用伯曼插管导气管和奥瓦萨皮安插管导气管进行了比较。该研究为随机研究，在纤维光学内镜检查中，每位患者均作为自身对照。结果表明，两种导气管均可用于麻醉患者的经口纤维光学气管插管。如果伯曼导气管尺寸合适且位于中线位置，那么与奥瓦萨皮安导气管相比，使用伯曼导气管时声带的可视性更好。当插管导管受到碰撞时，使用伯曼导气管完成气管插管比使用奥瓦萨皮安导气管更困难。
