【摘要】 观察１７例肺叶切除术的病人，探讨双肺通气（ＴＬＶ）、单肺等容通气（ＯＬＶ－等容）和单肺等压通气（ＯＬＶ－等压）时不同呼吸频率（ｆ）对潮气量（Ｖγ）、每分钟通气量（ＶＥ）及血气值的影响。结果提示，改变ｆ对气道压力（Ｐａｗ）无影响。ｆ与Ｖγ呈负相关ｒ＝－０．９９。而ｆ与ＶＥ呈正相关ｒ＝０．９９。ＯＬＶ时Ｖγ较ＴＬＶ时明显减少，ＶＥ也相应减少。若提高ｆ，可使ＯＬＶ－等容时ＶＥ的不足得以缓解。而ＯＬＶ－等压则不然。ＯＬＶ时的血气值有所改变，ＰａＯ２较ＴＬＶ降低５０％，而ＰａＣＯ２在ＯＬＶ等压组升高，通过调整ＶＡ可予以纠正。更多还原

【Abstract】 eventeen adult patients undergoing selected pulmonectomy were divided into 3 groups according to differentventilation modes:two-lung ventilation(TLV ),one-lung ventilation ( OLV)with equal tidal volume and OLVwith equal airway pressure (Paw).The purpose of study was to observe the influence of changing respiratory fre-quency (f)on tidal volume (Vγ),minute volume(VE)and blood-gas analyse during TLV and OLV. The results:the change of f didn’t affect on Paw. f was negatively related to Vγ(r=0. 99),but positively to VE(r=0. 99).Vγduring OLV was obviously lower than that during TLV, so did VE. If f was increased during OLV-equal volume,the insufficient part of VE could be compensated by increasing f,but it could not during OLV-equal Paw. Blood-gasanalyses showed that PaO2 during OLV was 50%lower than that during TLV and PaCOz during OLV-equal Pawwas higher than that during TLV(P<0.01 )。更多还原