Gale G D, Sanders D E
Can Anaesth Soc J. 1980 Sep;27(5):475-80. doi: 10.1007/BF03007047.
Treatment with intermittent positive pressure breathing (IPPB) and incentive spirometry (I.S.) was compared in 109 patients after heart surgery with cardiopulmonary bypass. Assessment was done by measurement of vital capacity, arterial oxygen tension and identification of the radiological signs of atelectasis. All patients were instructed pre-operatively in the treatment which was to be used. Vital capacity, arterial oxygen tension while breathing air for the first three postoperative days and the incidence of atelectasis showed no significant difference between groups. Ten minutes after treatment the arterial oxygen tension fell, but this was only statistically significant after I.P.P.B. At 60 minutes the arterial oxygen tension had returned to pretreatment level in both groups. The use of the incentive spirometer four times daily is no better than I.P.P.B., in preventing atelectasis after open-heart surgery. Possibly incentive spirometer treatment given more frequently may be more effective.
对109例接受体外循环心脏手术的患者比较了间歇性正压通气（IPPB）和激励肺活量测定法（I.S.）的治疗效果。通过测量肺活量、动脉血氧张力以及识别肺不张的放射学征象进行评估。所有患者在术前均接受了即将使用的治疗方法的指导。两组患者术后前三天呼吸空气时的肺活量、动脉血氧张力以及肺不张的发生率均无显著差异。治疗后10分钟动脉血氧张力下降，但仅在IPPB治疗后具有统计学意义。60分钟时两组的动脉血氧张力均恢复到治疗前水平。在预防心脏直视手术后肺不张方面，每天使用4次激励肺活量测定法并不比IPPB更好。可能更频繁地进行激励肺活量测定法治疗可能会更有效。
