Szpisjak Dale F, Giberman Anthony A
Department of Anesthesiology, Uniformed Services University, Room C-1090, 4301 Jones Bridge Road, Bethesda, MD 20814.
Department of Anesthesiology, Fort Belvoir Community Hospital, 9300 DeWitt Loop, Fort Belvoir, VA 22060.
Mil Med. 2015 May;180(5):499-502. doi: 10.7205/MILMED-D-14-00461.
Compressed air to power field anesthesia machine ventilators may be supplied by air compressor with battery backup. This study determined the battery duration when the compPAC ventilator's air compressor was powered by NiCd battery to ventilate the Vent Aid Training Test Lung modeling high (HC = 0.100 L/cm H2O) and low (LC = 0.020 L/cm H2O) pulmonary compliance. Target tidal volumes (VT) were 500, 750, and 1,000 mL. Respiratory rate = 10 bpm, inspiratory-to-expiratory time ratio = 1:2, and fresh gas flow = 1 L/min air. N = 5 in each group. Control limits were determined from the first 150 minutes of battery power for each run and lower control limit = mean VT - 3SD. Battery depletion occurred when VT was below the lower control limit. Battery duration ranged from 185.8 (±3.2) minutes in the LC-1000 group to 233.3 (±3.6) minutes in the HC-750 group. Battery duration of the LC-1000 group was less than all others (p = 0.027). The differences among the non-LC-1000 groups were not clinically significant.
用于为现场麻醉机呼吸机提供动力的压缩空气可由配备电池备用电源的空气压缩机供应。本研究确定了compPAC呼吸机的空气压缩机由镍镉电池供电时，在模拟高肺顺应性（HC = 0.100 L/cm H2O）和低肺顺应性（LC = 0.020 L/cm H2O）的Vent Aid训练测试肺上进行通气时的电池续航时间。目标潮气量（VT）分别为500、750和1000 mL。呼吸频率 = 10次/分钟，吸呼比 = 1:2，新鲜气流 = 1 L/分钟空气。每组n = 5。根据每次运行电池供电的前150分钟确定控制界限，下限控制值 = 平均VT - 3标准差。当VT低于下限控制值时发生电池耗尽。电池续航时间从LC - 1000组的185.8（±3.2）分钟到HC - 750组的233.3（±3.6）分钟不等。LC - 1000组的电池续航时间短于所有其他组（p = 0.027）。非LC - 1000组之间的差异无临床意义。
