Document Detail

The immediate effects of deep breathing exercises on atelectasis and oxygenation after cardiac surgery.
MedLine Citation:
PMID:  14668188     Owner:  NLM     Status:  MEDLINE    
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.
Elisabeth Westerdahl; Birgitta Lindmark; Tomas Eriksson; Göran Hedenstierna; Arne Tenling
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Scandinavian cardiovascular journal : SCJ     Volume:  37     ISSN:  1401-7431     ISO Abbreviation:  Scand. Cardiovasc. J.     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2003-12-11     Completed Date:  2004-06-01     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9708377     Medline TA:  Scand Cardiovasc J     Country:  Norway    
Other Details:
Languages:  eng     Pagination:  363-7     Citation Subset:  IM    
Department of Medical Sciences, Clinical Physiology, University Hospital, Uppsala, Sweden.
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MeSH Terms
Blood Gas Analysis
Breathing Exercises
Coronary Artery Bypass / adverse effects*,  rehabilitation*
Coronary Artery Disease / surgery
Lung / pathology,  radiography
Middle Aged
Positive-Pressure Respiration
Postoperative Care / methods
Postoperative Complications / prevention & control*
Pulmonary Atelectasis / etiology,  prevention & control*,  radiography
Respiratory Function Tests
Respiratory Therapy / methods*
Tomography, X-Ray Computed
Treatment Outcome

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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