| 全麻期间呼气末和动脉血二氧化碳分压的变化及其影响因素 |
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| 引用本文： | 王保国,刘玉钦,王恩真,王晓持.全麻期间呼气末和动脉血二氧化碳分压的变化及其影响因素[J].天津医药,1991(7). |
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| 作者姓名： | 王保国 刘玉钦 王恩真 王晓持 |
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| 作者单位： | 北京天坛医院麻醉科，河南省平顶山市人民医院，北京天坛医院麻醉科，北京天坛医院麻醉科 |
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| 摘 要： | 本文对比观察21例神经外科病人50～60% N_2O-O_2-安(异)氟醚麻醉期间呼气末二氧化碳分压(P_(ET)CO_2)和动脉血二氧化碳分压(PaCO_2)的变化。结果表明麻醉前自主呼吸时或术毕自主呼吸恢复后 PaCO2 和 P_(ET)CO_2 的相关性明显高于麻醉期间间歇正压通气时,潮气量对Pa_(-ET)CO_2 有一定的影响。结论:自主呼吸时 P_(ET)CO_2 能较正确地反映 PaCO_2;全麻控制呼吸期间以 P_(ET)CO_2 估测 PaCO_2 的准确性下降;采用 P_(ET)CO_2 和潮气量多元估测 PaCO_2 可提高准确度。
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| 关 键 词： | P_(ET)CO_2 PaCO_2 潮气量 |
Changes and Factors of Peak Expiratory and Arterial Carbon Dioxide Pressure During General Anesthesia |
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| Wang Baoguo,et al.Changes and Factors of Peak Expiratory and Arterial Carbon Dioxide Pressure During General Anesthesia[J].Tianjin Medical Journal,1991(7). |
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| Authors: | Wang Baoguo |
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| Institution: | Wang Baoguo,et al Department of Anesthesiology,Tiantan Hospital,Beijing |
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| Abstract: | The peak expiratory carbon dioxide pressure(P_(ET)CO_2)and arterial carbon dio-xide partial pressure(PaCO_2)were measured and compared in 21 neurosurgical pa-tients anesthetized with 50-60% N_2O-O_2-enflurane(or isoflurane).The results showedthat the interrelationship between P_(ET)CO_2 and PaCO_2 was closer during spontaneousrespiration(SR),r=0.87,than intermittent positive pressure ventilation(IPPV),r=0.56,and the tidal volume(TV)affected the difference between P_(ET)CO_2 andPaCO_2.It was concluded that P_(ET)CO_2 might provide a precise estimation of PaCO_2during SR,but the accuracy of PaCO_2 calculated from P_(ET)CO_2 decreased during IPPV,and that PaCO_2 estimated from both P_(ET)CO_2 and TV might be more reliableeither during IPPV or during SR. |
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| Keywords: | P_(ET)CO_2 PaCO_2 tidal volume |
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