Murray D, Ward M E, Sear J W
Nuffield Department of Anaesthetics, John Radcliffe Hospital, Headington, Oxford.
Anaesthesia. 1995 Dec;50(12):1062-4. doi: 10.1111/j.1365-2044.1995.tb05952.x.
A new lightweight device for the detection of placement of a tracheal tube in the trachea or oesophagus is described. The device utilises a sonic technique detecting resonating frequencies in an open (trachea) or closed (oesophagus) structure. Evaluation of the device in a clinical environment is described and it has been shown to be capable of verifying the correct placement of the tracheal tube in the trachea in 98% of patients studied. Further evaluation of this intubating aid appears justified.
描述了一种用于检测气管导管在气管或食管中位置的新型轻便装置。该装置利用一种声学技术来检测开放结构（气管）或封闭结构（食管）中的共振频率。文中描述了该装置在临床环境中的评估情况，结果表明在98%的受试患者中，它能够验证气管导管在气管中的正确位置。对这种插管辅助工具进行进一步评估似乎是合理的。
