The ratio of shock index to pulse oxygen saturation predicting mortality of emergency trauma patients

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The ratio of shock index to pulse oxygen saturation predicting mortality of emergency trauma patients

JournalPLOS One
Publication date – Jul – 2020
Authors – Junfang Qi ,Li Ding ,Long Bao,Du Chen
Keywordsemergency trauma patients, mortality, pulse oxygen saturation, shock index
Open access – Yes
SpecialityEmergency surgery, Trauma surgery
World region South-eastern Asia
Country: China
Language – English
Submitted to the One Surgery Index on August 2, 2020 at 11:55 pm
Abstract:

Objective: To test the following hypothesis: the ratio of shock index to pulse oxygen saturation can better predict the mortality of emergency trauma patients than shock index.

Methods: 1723 Patients of trauma admitted to the Emergency Department of the First Affiliated Hospital of Soochow University from 1 November 2016 to 30 November 2019 were retrospectively evaluated. We defined SS as the ratio of SI to SPO2, and the mortality of trauma patients in the emergency department as end-point of outcome. We calculated the crude HR of SS and adjusted HR with the adjustment for risk factors including sex, age, revised trauma score (RTS) by Cox regression model. ROC curve analyses were performed to compare the area under the curve (AUC) of SS and SI.

Results: The crude HR of SS was: 4.31, 95%CI (2.89-6.42) and adjusted HR: 3.01, 95%CI(1.86-4.88); ROC curve analyses showed that AUC of SS was higher than that of shock index (SI), and the difference was statistically significant: 0.69, 95%CI(0.55-0.83) vs 0.65, 95%CI (0.51-0.79), P = 0.001.

Conclusion: The ratio of shock index to pulse oxygen saturation is good predictor for emergency trauma patients, which has a better prognostic value than shock index.

OSI Number – 20615
PMID – 32701972

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