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首页> 外文期刊>Revista Brasileira de Terapia Intensiva >Ventilatory changes during the use of heat and moisture exchangers in patients submitted to mechanical ventilation with support pressure and adjustments in ventilation parameters to compensate for these possible changes: a self-controlled intervention study in humans
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Ventilatory changes during the use of heat and moisture exchangers in patients submitted to mechanical ventilation with support pressure and adjustments in ventilation parameters to compensate for these possible changes: a self-controlled intervention study in humans

机译：在接受支持压力的机械通气的患者中使用热湿交换器时的通气变化和通气参数调整以补偿这些可能的变化：一项针对人体的自我控制干预研究

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Objective: To evaluate the possible changes in tidal volume, minute volume and respiratory rate caused by the use of a heat and moisture exchanger in patients receiving pressure support mechanical ventilation and to quantify the variation in pressure support required to compensate for the effect caused by the heat and moisture exchanger. Methods: Patients under invasive mechanical ventilation in pressure support mode were evaluated using heated humidifiers and heat and moisture exchangers. If the volume found using the heat and moisture exchangers was lower than that found with the heated humidifier, an increase in pressure support was initiated during the use of the heat and moisture exchanger until a pressure support value was obtained that enabled the patient to generate a value close to the initial tidal volume obtained with the heated humidifier. The analysis was performed by means of the paired t test, and incremental values were expressed as percentages of increase required. Results: A total of 26 patients were evaluated. The use of heat and moisture exchangers increased the respiratory rate and reduced the tidal and minute volumes compared with the use of the heated humidifier. Patients required a 38.13% increase in pressure support to maintain previous volumes when using the heat and moisture exchanger. Conclusion: The heat and moisture exchanger changed the tidal and minute volumes and respiratory rate parameters. Pressure support was increased to compensate for these changes.
机译：目的：评估在接受压力支持机械通气的患者中使用热湿交换器可能引起的潮气量，分钟气量和呼吸频率的变化，并量化为补偿因呼吸机引起的影响所需的压力支持变化。湿热交换器。方法：使用加热的加湿器和热湿交换器评估在压力支持模式下进行有创机械通气的患者。如果使用热湿交换器发现的体积小于加热的加湿器发现的体积，则在使用热湿交换器期间会开始增加压力支持，直到获得压力支持值，使患者能够产生压力。值接近加热加湿器获得的初始潮气量。通过配对t检验进行分析，增量值表示为所需增加的百分比。结果：共评估了26例患者。与使用加热加湿器相比，使用热气和水分交换器可以提高呼吸频率，并减少潮气量和每分钟的体积。使用热湿交换器时，患者需要增加38.13％的压力支持以维持以前的容量。结论：湿热交换器改变了潮气量，分钟流量和呼吸频率参数。增加压力支持以补偿这些变化。

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