The Effect of Body Positional Change on Gas Exchange in Unilateral Pleural Effusion |
Hyon Il Chon1, Sang Young Cho1, Seung Cheon Seo1, Suk Jun Um1, Sung Ho Hur2 |
1Department of Internal Medicine, Kaηg-Nam Hosþital, Seoul, Korea 2Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea |
편측성 흉막 삼출액환자에서 체위변화가 가스교환에 미치는 영향 |
천현일1, 조상용1, 서승천1, 엄석준1, 허성호2 |
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Abstract |
The effects of body position, right and left lateral decubitus, on arterial blood gases were studied in 12 patients who had unilateral pleural fluid without clinical or radiologic evidence of parenchymal lung disease. Arterial blood gases were analyzed 15 minutes after a new position. Similar studies were performed in 8 normal volunteers, the control group.
Significant difference in arterial oxygen tension(Pa02) values between two positions were found for all patients but not for control subject. In all 12 patients, Pa02 values were higher when the lung with the pleural fluid was upper most.
The mean Pa02 in this position was 70.9 ± 14.2 mmHg compared with 06. 3± 13.1 mmHg in the lateral decubitus position with the pleural fluid lower most.
The mean difference in Pa02 between the two positions was 4.6 mmHg.
Because the magnitude of the differences in Pa02 values between different decubitus positions for a given patient were considerable, clinical applications of the data may be therapeutically helpful. |
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