الفهرس 
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Abstract
Abstract
The aim of this study was to investigate the effect of manual hyperinflation on selected arterial blood gases in mechanically ventilated patients. Forty mechanically ventilated patients were randomly selected from Cairo university hospitals (critical care department), their ages ranged from 40 to 60 years. They were divided into two equal groups study and control group ,twenty patients for each group, each patient of the study group received both manual hyperinflation for 15 min and chest physiotherapy for 15 min with frequency thee sessions per day for three successive days, each patient of the control group received only chest physiotherapy for 15 min with frequency three sessions per day for three successive days , Pre and post study arterial blood gases assessment was done for each patient of both groups , the result of our study revealed statistically difference in selected arterial blood gases that showed improvement in patients in both control and study group but this improvement was high statistically significant in study group only , So, it is recommended to use manual hyperinflation with chest physiotherapy in order to improve the arterial blood gases in mechanically ventilated patients
Key words: manual hyperinflation, arterial blood gases, mechanically ventilated patients.