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首页> 外文期刊>Canadian journal of anesthesia: Journal canadien d'anesthesie >Contemporary anesthesia ventilators incur a significant 'oxygen cost': (Les ventilateurs d'anesthesie actuels exposent a une importante depense d'oxygene).
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Contemporary anesthesia ventilators incur a significant 'oxygen cost': (Les ventilateurs d'anesthesie actuels exposent a une importante depense d'oxygene).

机译：当代麻醉呼吸机会产生大量的“氧气费用”：（当前的麻醉呼吸机会显示出“氧气费用”）。

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PURPOSE: Anesthesia ventilators use oxygen or oxygen/air mixtures to drive the bellows during controlled ventilation. As a practitioner may find himself in a situation that the only available oxygen source is a compressed oxygen cylinder, it is important to know the oxygen consumption of anesthesia ventilators during controlled ventilation. METHODS: We tested the Datex-Ohmeda 7900 ventilator mounted on an Excel 210 anesthesia machine under a variety of conditions. For comparison, we also tested the Ohmeda 7800 and the Drager AV-2 ventilator under control conditions. All experiments were performed using a test lung. RESULTS: The oxygen consumption of the AV-2 and the Datex-Ohmeda ventilators averaged 302 +/- 17 L.hr(-1) and 564 +/- 68 to 599 +/- 56 L.hr(-1), respectively (P < 0.01 AV-2 vs 7800 and 7900). When using an E-type cylinder, this would result in a mean time to alarm of 93 min and 54 to 57 min, respectively. Decreased lung compliance increased the oxygen consumption to 848 +/- 16 L.hr(-1). CONCLUSIONS: Machine-driven mechanical ventilation incurs a significant "oxygen cost." We show that the amount of oxygen consumed by mechanical ventilation with contemporary anesthesia ventilators is influenced by patient-dependent factors and may greatly exceed the amount of oxygen delivered to the patient.
机译：目的：麻醉呼吸机在控制通气期间使用氧气或氧气/空气混合物来驱动波纹管。由于从业者可能会遇到唯一可用的氧气源是压缩氧气瓶的情况，因此重要的是要了解受控通气期间麻醉呼吸机的氧气消耗。方法：我们在各种条件下测试了安装在Excel 210麻醉机上的Datex-Ohmeda 7900呼吸机。为了进行比较，我们还在控制条件下测试了Ohmeda 7800和Drager AV-2呼吸机。所有实验均使用被测肺进行。结果：AV-2和Datex-Ohmeda呼吸机的平均耗氧量分别为302 +/- 17 L.hr（-1）和564 +/- 68至599 +/- 56 L.hr（-1） （P <0.01 AV-2 vs 7800和7900）。使用E型气缸时，平均警报时间分别为93分钟和54至57分钟。肺顺应性降低将氧气消耗增加至848 +/- 16 L.hr（-1）。结论：机器驱动的机械通风会产生大量的“氧气成本”。我们显示，当代麻醉呼吸机的机械通气消耗的氧气量受患者依赖性因素的影响，并且可能大大超过输送给患者的氧气量。

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