Acta Medica Okayama volume74 issue1
2020-02 発行

Relationship between a High-inspired Oxygen Concentration and Dorsal Atelectasis in High-energy Trauma Patients

Ishii, Kenzo Department of Anesthesiology and Oncological Pain Medicine, Fukuyama City Hospital
Morimatsu, Hiroshi Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences ORCID Kaken ID publons researchmap
Ono, Kazumi Department of Anesthesiology and Oncological Pain Medicine, Fukuyama City Hospital
Miyasho, Koji Department of Critical Care and Emergency Medicine, Fukuyama City Hospital
Publication Date
We performed a retrospective cohort study of 911 high-energy trauma patients who underwent chest CT scans at least twice after admission. We hypothesized that in high-energy trauma patients, a high-inspired oxygen concentration delivered after admission results in dorsal atelectasis. The study’s primary outcome was dorsal atelectasis formation diagnosed based on CT images. We defined dorsal atelectasis as the presence of atelectasis at ≥ 10 mm thick on CT images. We defined high-inspired oxygen concentration as >60% oxygen delivered between two CT scans. Four hundred sixty-five patients (51.0%) developed atelectasis according to the second CT scan, and 338 (37.1%) received a high-inspired oxygen concentration. A univariate analysis showed that the rate of the high-inspired oxygen concentration in the atelectasis group was significantly higher than that in the non-atelectasis group (43.4% vs. 30.1%, p<0.001). However, a logistic regression analysis showed that there was no significant relationship between the oxygen concentration and the formation of dorsal atelectasis (OR: 1.197, 95%CI: 0.852-1.683, p=0.30). Age, the Injury Severity Score, BMI, and smoking were found to be risk factors of dorsal atelectasis formation in high-energy trauma patients. There was no relationship between the oxygen concentration and atelectasis formation in our series of high-energy trauma patients.
Document Type
Original Article
trauma patient
dorsal atelectasis
oxygen concentration
Link to PubMed
Thumnail 74_1_17.pdf 2.18 MB