The effect of selective drainage positions on oxygen saturation in obese patients after upper abdominal surgery.

M. Y. Bien, C. C. Zadai, C. M. Kigin, D. C. Hoaglin

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Abstract

The obese patients undergoing upper abdominal surgery are at particularly high risk to develop postoperative pulmonary complications, and hypoxemia is one of the most common ones reported. During the initial postoperative period, they are often advised to maintain a semi-sitting position to optimize oxygenation. Although chest physical therapy usually avoids a Trendelenburg position, no published data indicate this position as being able to induce desaturation in obese patients following upper abdominal surgery. We studied fifteen adult obese patients without cardiopulmonary disease undergoing upper abdominal surgery. All patients were tested for 5 minutes during the first 3 postoperative days in each of 3 positions: semi-sitting, bed-flat lateral decubitus, and 15 degrees of Trendelenburg lateral decubitus positions. A statistically significant difference in oxygen saturation related to position was found only on the first postoperative day between semi-sitting and bed-flat lateral decubitus positions. The difference in mean SaO2 value between these 2 positions, however, was only 0.88%; and no significant correlation between the magnitude of obesity and the mean SaO2 difference was found. Although arterial oxygen saturation demonstrated statistically significant daily improvement during the first 3 postoperative days, the mean SaO2 values for any 2 consecutive days differed by less than 0.78%. Thus, in obese patients following upper abdominal surgery, 15 degrees of Trendelenburg lateral decubitus and bed-flat lateral decubitus positions do not induce clinically significant desaturation and can be used if necessary and appropriate. In obese patients with borderline oxygenation, supplemental oxygen used postoperatively can maintain adequate oxygenation and allow aggressive positioning.

Original languageEnglish
Pages (from-to)183-192
Number of pages10
JournalChinese Medical Journal (Taipei)
Volume51
Issue number3
Publication statusPublished - Mar 1993
Externally publishedYes

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Drainage
Oxygen
Posture
Head-Down Tilt
Postoperative Period
Thorax
Obesity
Lung
Therapeutics

ASJC Scopus subject areas

  • Medicine(all)

Cite this

The effect of selective drainage positions on oxygen saturation in obese patients after upper abdominal surgery. / Bien, M. Y.; Zadai, C. C.; Kigin, C. M.; Hoaglin, D. C.

In: Chinese Medical Journal (Taipei), Vol. 51, No. 3, 03.1993, p. 183-192.

Research output: Contribution to journalArticle

Bien, M. Y. ; Zadai, C. C. ; Kigin, C. M. ; Hoaglin, D. C. / The effect of selective drainage positions on oxygen saturation in obese patients after upper abdominal surgery. In: Chinese Medical Journal (Taipei). 1993 ; Vol. 51, No. 3. pp. 183-192.
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abstract = "The obese patients undergoing upper abdominal surgery are at particularly high risk to develop postoperative pulmonary complications, and hypoxemia is one of the most common ones reported. During the initial postoperative period, they are often advised to maintain a semi-sitting position to optimize oxygenation. Although chest physical therapy usually avoids a Trendelenburg position, no published data indicate this position as being able to induce desaturation in obese patients following upper abdominal surgery. We studied fifteen adult obese patients without cardiopulmonary disease undergoing upper abdominal surgery. All patients were tested for 5 minutes during the first 3 postoperative days in each of 3 positions: semi-sitting, bed-flat lateral decubitus, and 15 degrees of Trendelenburg lateral decubitus positions. A statistically significant difference in oxygen saturation related to position was found only on the first postoperative day between semi-sitting and bed-flat lateral decubitus positions. The difference in mean SaO2 value between these 2 positions, however, was only 0.88{\%}; and no significant correlation between the magnitude of obesity and the mean SaO2 difference was found. Although arterial oxygen saturation demonstrated statistically significant daily improvement during the first 3 postoperative days, the mean SaO2 values for any 2 consecutive days differed by less than 0.78{\%}. Thus, in obese patients following upper abdominal surgery, 15 degrees of Trendelenburg lateral decubitus and bed-flat lateral decubitus positions do not induce clinically significant desaturation and can be used if necessary and appropriate. In obese patients with borderline oxygenation, supplemental oxygen used postoperatively can maintain adequate oxygenation and allow aggressive positioning.",
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