The immediate effects of deep breathing exercises on atelectasis and oxygenation after cardiac surgery |
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Authors: | Elisabeth Westerdahl Birgitta Lindmark Tomas Eriksson Arne Tenling |
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Affiliation: | 1. Department of Medical Sciences, Clinical Physiology, University Hospital, Uppsala, Sweden;2. Departments of Physiotherapy and Thoracic Surgery, ?rebro University Hospital, ?rebro, Sweden;3. Department of Neuroscience, Section of Physiotherapy, University Hospital, Uppsala, Sweden;4. Department of Radiology, ?rebro University Hospital, ?rebro, Sweden;5. Department of Thoracic Anaesthesia, Huddinge University Hospital, Huddinge, Sweden |
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Abstract: | Objective—To investigate the effects of deep breathing performed on the second postoperative day after coronary artery bypass graft surgery. Design—The immediate effects of 30 deep breaths performed without a mechanical device (n?=?21), with a blow bottle device (n?=?20) and with an inspiratory resistance‐positive expiratory pressure mask (n?=?20) were studied. Spiral computed tomography and arterial blood gas analyses were performed immediately before and after the intervention. Results—Deep breathing caused a significant decrease in atelectatic area from 12.3?±?7.3% to 10.2?±?6.7% (p?0.0001) of total lung area 1?cm above the diaphragm and from 3.9?±?3.5% to 3.3?±?3.1% (p?0.05) 5?cm above the diaphragm. No difference between the breathing techniques was found. The aerated lung area increased by 5% (p?0.001). The PaO 2 increased by 0.2?kPa (p?0.05), while PaCO 2 was unchanged in the three groups. Conclusion—A significant decrease of atelectatic area, increase in aerated lung area and a small increase in PaO 2 were found after performance of 30 deep breaths. No difference between the three breathing techniques was found. |
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Keywords: | Bristol cardiac surgery communication consent |
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