یداله شیروانی - School of Nursing and Midwifery, Zanjan University of Medical Sciences, Zanjan, Iran.
میترا پیامی بوساری - School of Nursing and Midwifery, Zanjan University of Medical Sciences, Zanjan, Iran.
سعید آقا حسن کاشانی - Dept. of Internal Medicine, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
سید نورالدین موسوی نسب - Dept. of Statistics, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran

Background and Objective: Hypoxia is a major problem in patients undergoing ventilation due to the high bronchioles secretion. This study aimed to determine the effect of expiratory rib-cage compression prior to endotracheal suctioning on arterial blood oxygenation (SpO۲) in patients undergoing mechanical ventilation. Materials and Methods: This clinical trial with a crossover design included ۵۰ mechanically ventilated patients hospitalized in the intensive care units of two educational hospitals (Vali-e-Asr and Ayatollah Mousavi) of Zanjan using the convenience sampling method. The participants were randomly divided into two groups. During the first phase of the study, the rib-cage compression was performed once for five minutes prior to suctioning in group one. The other group received suctioning without any rib-cage compression. The procedures were performed in a reverse fashion in the two groups after three hours. SpO۲ was measured three times: five minutes prior to the endotracheal suctioning, and ۱۵ and ۲۵ minutes following the procedure. Data were analyzed using independent and paired t-tests. Results: There were statistically significant differences in the SpO۲ mean values between five minutes before and ۱۵ minutes after the endotracheal suctioning in patients who received endotracheal suctioning with the rib-cage compression (P< ۰.۰۵). Moreover, there was a statistically significant difference between the mean SpO۲ values in the same intervals between the two groups (P< ۰.۰۰۰۱). Conclusion: The results show that expiratory rib-cage compression prior to endotracheal suctioning improves arterial blood oxygenation in patients undergoing mechanical ventilation. Therefore, we recommend performing the procedure.

Keyword: Mechanical ventilation, Endotracheal suctioning, Expiratory rib cage compression, Vital signs