Purpose
Management options for extraperitoneal bladder injury (EBI) associated with pelvic fracture are variable. Predictive factors of operative management (OM) in patients with EBI associated pelvic fracture have not been previously addressed. This study assessed the current epidemiology of blunt traumatic urinary bladder injury and evaluated relevant clinical findings of patients with EBI associated with pelvic fracture who received OM.

Methods
Patients with urinary bladder injury with or without pelvic fracture from blunt trauma from January 1, 2014 to December 31, 2019 were identified from the institute trauma registry (n = 12,891). Demographics, mechanism of injury, type of urinary bladder injury, pelvic fracture configuration, and management options were analysed in the study population (n = 9,894).

Results
Of the 1,400 patients who had pelvic and/or acetabular fracture, 32 (2.3%) had urinary bladder injury. Of the 8,494 patients without pelvic and/or acetabular fracture, 12 (0.1%) had nonpelvic fracture urinary bladder injury. The total incidence of urinary bladder injuries in the study population was 0.4% (44/9,894). Patients with EBI associated with pelvic fracture who underwent OM, had a higher frequency of high-grade pelvic injury (100% vs 0%, p = 0.015), concomitant pelvic surgery (75.0% vs 0%, p = 0.001), and non-lateral compression type pelvic fracture (62.5% vs 10.0%, p = 0.043) compared with patients who underwent non-operative management of EBI.

Conclusions
These data suggest that OM may be considered especially in patients with EBI associated with pelvic fracture with high grade pelvic injury, concomitant pelvic surgery, and nonlateral compression type pelvic fracture.

Purpose
Managing patients with hemorrhagic shock is mainly dependent on stopping the bleeding as fast as possible. Emergency Department laparotomy (EDL) is considered one of the approaches to control intra-abdominal bleeding rapidly. This study aims to evaluate the outcomes of EDL in a regional trauma center of Pusan National University Hospital in a 4-year period.
Methods
The medical records and data of patients who underwent EDL from January 2016 to December 2019 were analyzed. Patients who underwent preperitoneal pelvic packing only or did not receive surgery immediately after EDL were excluded.
Results
Twenty-four patients who underwent EDL were included in the study. 18 patients had sustained blunt trauma, and 6 suffered from penetrating injuries. Small bowel mesentery and liver injuries were the most frequent. Increase of median systolic blood pressure (SBP) after EDL was 55.5 mmHg. Four (16.7%) out of the 24 survived; one of the four survivors received cardiopulmonary resuscitation (CPR). In the nonsurvivor group, Injury Severity Score was significantly higher (p = 0.013), initial pH was lower (p = 0.035) and the amount of packed red blood cells transfusion after EDL was significantly higher (p = 0.013) than those in the survivor group.
Conclusion
The mortality rate was very high in trauma patients who were required EDL. Although EDL was not proved to be an effective procedure for resuscitation in trauma patients, it could be considered as one of the treatment options for trauma patients in extremis. Further studies are required to examine the effects of EDL.