Mutzbauer T S, Neubauer B, Mueller P H, Tetzlaff K
Department of Anaesthesiology and Critical Care Medicine, Federal Armed Forces Medical Center, Ulm, Germany.
Resuscitation. 1998 Oct-Nov;39(1-2):75-80. doi: 10.1016/s0300-9572(98)00104-x.
This pilot study was carried out in order to determine whether or not a modified closed circuit underwater oxygen rebreathing device could serve as an adjunct for ventilation during CPR in remote locations. As a control a common self-inflating bag valve ventilation device was used.
A total of 20 combat divers were enrolled, of whom 18 met the criteria to be included in two-rescuer CPR manikin training. A modified LAR V (Drager, Germany), a closed circuit underwater breathing apparatus, that uses pure oxygen, and a conventional Ambu Mark III bag were used for artificial mask-ventilation in a randomised crossover design. A total of ten cycles of CPR were analysed.
Of the divers, 17 were able to ventilate with the modified LAR V. The median tidal volumes were lower with LAR V versus Ambu (725 vs 800 ml; P = 0.04) and median total time required was significantly longer with LAR V versus Ambu (90 vs 68.5 s; P = 0.004). Gastric inflation was associated only with the Ambu.
This modification of the LAR V makes it suitable for CPR performed by military divers when conventional ventilatory devices are not available. It would be necessary, however, to teach the proper use of the modified ventilation mode and to provide repeated training.
本初步研究旨在确定一种改良的闭路水下氧气再呼吸装置能否作为偏远地区心肺复苏期间通气的辅助设备。作为对照，使用了一种常见的自动充气式袋阀通气装置。
共招募了20名战斗潜水员，其中18名符合纳入双人复苏模拟人训练的标准。采用随机交叉设计，使用一种改良的LAR V（德国德尔格公司），一种使用纯氧的闭路水下呼吸装置，以及传统的安普Ambu Mark III袋进行人工面罩通气。共分析了十个心肺复苏周期。
17名潜水员能够使用改良的LAR V进行通气。与安普Ambu相比，LAR V的潮气量中位数较低（725对800毫升；P = 0.04），且LAR V所需的总时间中位数明显长于安普Ambu（90对68.5秒；P = 0.004）。胃胀气仅与安普Ambu有关。
LAR V的这种改良使其适用于在没有传统通气设备时由军事潜水员进行的心肺复苏。然而，有必要教授改良通气模式的正确使用方法并提供反复训练。
