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一、使用人工呼吸机的适应症关于开始人工呼吸的标准,其说不一,但大体条件可表示如下。①潮气量在150m1以下;②肺活量500ml以下;③呼吸频率在40次/分以上或5次/分以下;④既使进行了氧气疗法PaO_2(动脉血氧分压)还在50mmHg以下;⑤PaCO_2(动脉血二氧化碳分压)在75mmHg以上。只要认定以上条件之一,就必须马上开始人工呼吸。但临床实际多在这些条件出现以前,人工呼吸就开始了。也有做为严重呼吸衰竭发生之前的预防手段,或以减轻循环系统负担为目的而应用的。保证呼吸道通畅:为保证人工呼吸的呼吸道通畅,一般要进行气管内插管或气管切开。气管内插管的固定,经鼻比经口更为确实,对患者的痛苦也少。人工呼吸开始时,用经鼻的气管插管以确保呼吸道通
First, the use of respirators Indications about artificial respiration standards vary, but the general conditions can be expressed as follows. ① Tidal volume below 150m1; ② Vital capacity below 500ml; ③ Respiratory rate of 40 beats / min or less / 5 beats / min; ④ Even if oxygen therapy PaO_2 (arterial oxygen partial pressure) is below 50mmHg; Arterial carbon dioxide partial pressure) above 75mmHg. As long as one of the above conditions is found, artificial respiration must begin immediately. However, more clinical practice before these conditions appear, artificial respiration began. It is also used as a preventive measure before severe respiratory failure occurs or with the purpose of reducing the burden on the circulatory system. Ensure that the airway patency: In order to ensure artificial respiration of the airway, usually to endotracheal intubation or tracheotomy. Endotracheal intubation, nasal than the mouth is more true, the patient’s pain is less. Nasal endotracheal intubation is used to ensure airway passage when artificial respiration begins