Chin E Y, Chan S Y, Yip Y Y, Chong J L
Department of Anaesthesia, Kandang Kerbau Hospital, Singapore.
Singapore Med J. 1990 Apr;31(2):138-41.
We compared the difference in denitrogenation (by intermittent measurement of arterial tension, PaO2) in 45 parturients at term when preoxygenated with 4, 6 or 8 rapid vital capacity breaths and 5 minutes of tidal volume breathing. Oxygen, at 8 litres min-1, was delivered through a facemask via a circle absorber with a 2 litre reservoir bag. Higher PaO2 was produced with 5 minutes of tidal volume breathing. This differed significantly from the PaO2 produced by 4, 6 or 8 rapid vital capacity breaths (p less than 0.01).
我们比较了45名足月产妇在进行4次、6次或8次快速肺活量呼吸加5分钟潮气量呼吸预充氧时，通过间歇性测量动脉血氧分压（PaO2）得出的去氮差异。通过带有2升储气囊的环形吸收器经面罩以每分钟8升的流量输送氧气。5分钟潮气量呼吸产生的PaO2更高。这与4次、6次或8次快速肺活量呼吸产生的PaO2有显著差异（p<0.01）。
