The Different Inspiratory Pressure Waves in Variuos I:E Ratio : Comparison of the Oxygenation and Ventilation in F1O2 1.0.
10.4097/kjae.1990.23.4.568
- Author:
Seong Deok KIM
1
;
Sang Min LEE
;
Yong Suk LEE
Author Information
1. Department of Anesthesiology, College of Mediciene, Seoul National University, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Pressure Wave;
I:E Ratio;
Oxygenation;
Ventilation
- MeSH:
Child;
Humans;
Oxygen*;
Respiration, Artificial;
Thoracic Surgery;
Ventilation*
- From:Korean Journal of Anesthesiology
1990;23(4):568-572
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The effect of alterations in the respiratory pressure wave forms in various I:E ratio during mechanical ventilation were studied in 9 children who had received open heart surgery. The patients were ventilated at I:E ratio of 1:3, 1:2, 1:1, 2:1 and 3:1 and wave forms of aeeelerating triangular, rectangular and decelerating triangular at random order. The minute ventilation and peak inspiratory pressure were remained constant. The F was 1.0. In this study, the only positive findings were that the use of rectangular and decelerating triangular wave form in I:E ratio of 1:2 resulted in decreased alveolar-arterial oxygen difference, 23.6% and 21. 1%, respectively, compared with the wave form of accelerating triangular.
