Lung ultrasound score-based assessment of postoperative atelectasis in obese patients according to inspired oxygen concentration: A prospective, randomized-controlled studyopen access
- Authors
- Min, Won Kee; Jin, Sejong; Choi, Yoon Ji; Won, Young Ju; Lee, Kaehong; Lim, Choon-Hak
- Issue Date
- Feb-2023
- Publisher
- Lippincott Williams & Wilkins Ltd.
- Keywords
- atelectasis; lung ultrasound score; obese
- Citation
- Medicine, v.102, no.7
- Indexed
- SCIE
SCOPUS
- Journal Title
- Medicine
- Volume
- 102
- Number
- 7
- URI
- https://scholarworks.korea.ac.kr/kumedicine/handle/2021.sw.kumedicine/62706
- DOI
- 10.1097/MD.0000000000032990
- ISSN
- 0025-7974
1536-5964
- Abstract
- Background
According to a recent meta-analysis, in patients with a body mass index (BMI) ≥ 30, a high fraction of inhaled oxygen (FiO2) did not increase postoperative atelectasis. However, a high FiO2 generally increases the risk of postoperative atelectasis. Therefore, this study aimed to evaluate the effect of FiO2 on the development of atelectasis in obese patients using the modified lung ultrasound score (LUSS).
Methods
Patients were assigned to 4 groups: BMI ≥ 30: group A (n = 21) and group B (n = 20) and normal BMI: group C (n = 22) and group D (n = 21). Groups A and C were administered 100% O2 during preinduction and emergence and 50% O2 during anesthesia. Groups B and D received 40% O2 for anesthesia. The modified LUSS was assessed before and 20 min after arrival to the postanesthesia care unit (PACU).
Results
The difference between the modified LUSS preinduction and PACU was significantly higher in group A with a BMI ≥ 30 (P = .006); however, there was an insignificant difference between groups C and D in the normal BMI group (P = .076).
Conclusion
High FiO2 had a greater effect on the development of atelectasis in obese patients than did low FiO2; however, in normal-weight individuals, FiO2 did not have a significant effect on postoperative atelectasis.
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Collections - 2. Clinical Science > Department of Anesthesiology and Pain Medicine > 1. Journal Articles
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