From the Intensive Care and Anesthesia Federation (M.C., P-J.C., J.B., S.S., E.M., G.L.), Sainte Anne Military Teaching Hospital, Toulon; Central Establishment of Equipment of the Military Health Service (F.C.), Orléans; and Anesthesia Service (A.L.), Laveran Military Teaching Hospital, Marseille, France.
J Trauma Acute Care Surg. 2020 Sep;89(3):e59-e63. doi: 10.1097/TA.0000000000002792.
Management of critically ill patients requiring mechanical ventilation in austere environments or during disaster response is a logistic challenge. Availability of oxygen cylinders for mechanically ventilated patient may be difficult in such a context. A solution to ventilate patients requiring high fraction of inspired oxygen (FiO2) is to use a ventilator able to be supplied by a low-pressure oxygen source connected with two oxygen concentrators (OCs). We tested the Elisée 350 (ResMedBella Vista, Australia) ventilator paired with two Newlife Intensity 10 (Airsep, Ball Ground, Georgia) OCs and evaluated the delivered FiO2 across a range of minute volumes and combinations of ventilator settings.
The ventilators were attached to a test lung, OC flow was adjusted with a Certifier FA ventilator test systems from 2 to 10 L/min and injected into the oxygen inlet port of the Elisée 350. The FiO2 was measured by the analyzer integrated in the ventilator, controlled by the ventilator test system. Several combinations of ventilator settings were evaluated to determine the factors affecting the delivered FiO2.
The Elisée 350 ventilator is a turbine ventilator able to deliver high FiO2 when functioning with two OCs. However, modifications of the ventilator settings such as an increase in minute ventilation affect delivered FiO2 even if oxygen flow is constant on the OC.
The ability of two OCs to deliver high FiO2 when used with a turbine ventilator makes this method of oxygen delivery a viable alternative to cylinders to ventilate patients requiring an FiO2 of ≥80% in austere place or during disaster response.
Feasibility study on test bench, level V.
在恶劣环境或灾难应对中，需要机械通气的危重症患者的管理是一个后勤挑战。在这种情况下，为机械通气患者提供氧气罐可能很困难。为需要高吸氧分数（FiO2）的患者通气的一种解决方案是使用能够由连接两个氧气浓缩器（OC）的低压氧气源供应的呼吸机。我们测试了 Elisée 350（ResMedBella Vista，澳大利亚）呼吸机与两个 Newlife Intensity 10（Airsep，Ball Ground，佐治亚州）OC 配合使用，并评估了在一系列分钟通气量和呼吸机设置组合下输送的 FiO2。
将呼吸机连接到测试肺上，使用 Certifier FA 呼吸机测试系统将 OC 流量从 2 调整到 10 L/min，并将其注入 Elisée 350 的氧气入口。由集成在呼吸机中的分析仪测量 FiO2，由呼吸机测试系统控制。评估了几种呼吸机设置组合，以确定影响输送 FiO2 的因素。
Elisée 350 呼吸机是一种涡轮呼吸机，当与两个 OC 一起使用时能够输送高 FiO2。然而，即使 OC 上的氧气流量保持不变，呼吸机设置的修改（例如增加分钟通气量）也会影响输送的 FiO2。
当与涡轮呼吸机一起使用时，两个 OC 输送高 FiO2 的能力使这种氧气输送方法成为在恶劣环境或灾难应对中为需要 FiO2≥80%的患者通气的可行替代方法。
基于测试台的可行性研究，等级 V。
