Abstract
Background: Blunt traumatic diaphragmatic rupture (TDR) is a rare condition that is seen in patients with blunt thoracoabdominal trauma. However, factors that are associated with blunt TDR have not been fully revealed. The purpose of this study was to evaluate the factors that are associated with blunt TDR in trauma patients with a chest or abdominal injury using nationwide trauma registry data in Japan. Method: This study was a retrospective observational study with a 15-year study period from 2004 to 2018. We included trauma patients with a chest or abdominal Abbreviated Injury Score of two or more. We evaluated the relationship between confounding factors such as mechanism of injury and blunt TDR with multivariable logistic regression analysis. Results: This study included 65,110 patients, of whom 496 patients (0.8%) suffered blunt TDR. Factors that were associated with blunt TDR were disturbance of consciousness (adjusted OR [AOR]: 1.639, 95% CI: 1.326–2.026), FAST positive (AOR: 2.120, 95% CI: 1.751–2.567), front seat passenger (AOR: 1.748, 95% CI: 1.129–2.706), and compression injury by heavy object (AOR: 1.677, 95% CI: 1.017–2.765). Conclusion: This study revealed several factors that are associated with blunt TDR. The results of this study may be useful for clinicians when estimating blunt TDR.