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Korean Journal of Critical Care Medicine 1987;2(2): 108-112. |
| 소아중환자 호흡관리시 흡기 - 호기율 ( I : E ratio ) 변화가 가스교환능에 미치는 영향 |
| 김성덕, 이청, 임승운 |
| 서울대학교 의과대학 마취과학교실 |
| The Effect of I : E ratio on Pulmonary Gas Exchange During Pediatric Respiratory Intensive Care |
| Seong Deok Kim, Cheong Lee, Seung Woon Lim |
| Department of Anesthesiology College of Medicine Seoul National University Seoul Korea |
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| ABSTRACT |
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The children who received. open heart surgery were mechanically ventilated with Bear 2 volume ventilator postoperatively in pediatric intensive care unit. To clarify the relationship of inspiratory: expiratory ratio to optimum ventilation and oxygenation, all the patients were ventilated at I: E ratios of 1: 2, 1: 1 and 2: 1, at random order, while peak inspiratory pressure, tidal volume and respiratory frequency remained constant. The results showed that the use of a long inspiratory phase resulted in increased PaO2 and decreased alveolar-arterial oxygen difference, indicating improvement in oxygenation, but PaCO2 and dead space(VD/VT) didn't show any changes, indicating no effects on pulmonary ventilation. |
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