余气量
- 网络Residual volume;residual volume, RV
余气量-
手术前后分别用肺功能测定仪测量肺通气功能和血气，并于不同体位（坐位和仰卧位）测量功能余气量（FRC）。
Pulmonary function and blood gas were measured pre - and postoperative day ( POD ) by computerized spirometer and blood gas analyzer , and FRC were measured on different positipn ( sitting and supine ) .
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结论注气后4h压力开始降低，余气量逐渐减少，主张注气后4h需检查气囊，补充气量，而不应放气，以发挥气囊的最佳作用。
Conclusion The cuff pressure and air volume begin to decrease 4 hours after inflated , so we suggest to check the cuff and supplement air 4 hours after inflated but not to deflate so as to take the best advantage of the cuff of the artificial airway .