• Takeshi Unoki, Yuri Kawasaki, Taro Mizutani, Yoko Fujino, Yaeko Yanagisawa, Shinichi Ishimatsu, Fumiko Tamura, and Hidenori Toyooka.
• Emergency and Critical Care Center, St Luke's International Hospital, Tokyo, Japan. utake@yj8.so-net.ne.jp
• Resp Care. 2005 Nov 1;50(11):1430-7.

BackgroundExpiratory rib-cage compression, a chest physiotherapy technique, is well known as the "squeezing" technique in Japan.ObjectiveTo determine the effects of rib-cage compression on airway-secretion removal, oxygenation, and ventilation in patients receiving mechanical ventilation.SettingAn intensive care unit of an emergency and critical care center at a tertiary-care teaching hospital in Tokyo, Japan.MethodsThirty-one intubated, mechanically ventilated patients in an intensive care unit were studied in a randomized, crossover trial. The patients received endotracheal suctioning with or without rib-cage compression, with a minimum 3-hour interval between the 2 interventions. Rib-cage compression was performed for 5 min before endotracheal suctioning. Arterial blood gas and respiratory mechanics were measured 5 min before endotracheal suctioning (baseline) and 25 min after suctioning. The 2 measurement periods were carried out on the same day.ResultsThere were no significant differences in the ratio of arterial partial pressure of oxygen to fraction of inspired oxygen, P(aCO2), or dynamic compliance of the respiratory system between the 2 periods (before and after endotracheal suctioning). Moreover, there were no significant differences in airway-secretion removal between the 2 periods.ConclusionsThis study suggests that rib-cage compression prior to endotracheal suctioning does not improve airway-secretion removal, oxygenation, or ventilation after endotracheal suctioning in this unselected population of mechanically ventilated patients.

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