Is diagnostic laparoscopy necessary in the management of left thoracoabdominal stab wounds?

Background: The diagnosis of a diaphragmatic rupture and the identification of patients for surgical repair is challenging despite current diagnostic algorithms and imaging technologies. Unless treated on time, acute traumatic diaphragmatic injury due to stab wounds has a high mortality and morbidity rate, with an increasing trend in the presence of organ herniation. In this study, we aimed to investigate the efficacy of diagnostic laparoscopy in patients with an anterior thoracoabdominal stab wound and to compare the follow-up outcomes of cases.

Methods: We retrospectively reviewed our institutional database of patients who were admitted with stab wounds between Oc-tober 2012 and 2022. Patients who underwent diagnostic laparoscopy were divided into two groups depending on the presence of a diaphragmatic injury. We analyzed demographics, the success of computed tomography (CT) imaging in the diagnosis, the presence of hemomediastinum, pneumomediastinum, tube thoracostomy application, associated organ injury, type of surgery, duration of surgery, complications, and the length of stay between the groups.

Results: Of the 39 patients with penetrating left thoracoabdominal injury underwent diagnostic laparoscopy, CT had a diagnostic sensitivity of 63.16% (95% Confidence interval [CI] 38.36-83.71%), and a specificity of 100% (95% CI 82.35-100.00%). We could not find a statistically significant difference between the groups in terms of studied variables, while operation time was significantly higher in the diaphragmatic injury group (P<0.01). Fourteen patients had accompanied visceral injuries.

Conclusion: Diagnostic laparoscopy is still the gold standard particularly in the ER setting, particularly in the absence of an experienced radiologist for 24 h and when the close monitoring of the patient by the same team cannot be provided.