Evaluation of Thoracoscopy with Single-Lumen Endotracheal Tube Intubation and Laparoscopy in the Diagnosis of Occult Diaphragmatic Injuries in Penetrating Thoracoabdominal Trauma.

Background: The diagnosis of traumatic diaphragmatic injuries (TDIs) after penetrating thoracoabdominal trauma is challenging and conventional imaging is unreliable. Laparoscopy and thoracoscopy are minimally invasive modalities of choice in the diagnosis and management of TDI. A little is known on the value of thoracoscopy with single-lumen endotracheal tube intubation (SLETI) in the diagnosis of occult diaphragmatic injuries, and how it compares with laparoscopy. Methods: A prospective study evaluated thoracoscopy with SLETI as a diagnostic tool for occult TDI. Thoracoscopy was followed by diagnostic laparoscopy to confirm the findings and manage diaphragmatic and intra-abdominal injuries. Results: Thirty-one patients underwent thoracoscopy followed by laparoscopy. Majority were men ( n  = 27, 87%). The median age was 30 years. Twenty-six patients had stab wounds (83.8%), and 5 had gunshot wounds (16.1%). The incidence of diaphragmatic injury was 42% ( n  = 13). Thoracoscopy with SLETI correctly identified 12 (92%) patients with diaphragmatic injury, but 1 patient had dense pleural adhesions. Diagnostic laparoscopy identified all injuries. Conclusion: Thoracoscopy with SLETI and laparoscopy are feasible, safe, and accurate approaches in detecting TDI in stable patients with penetrating thoracoabdominal injuries. However, dense pleural adhesions may prevent thoracoscopy. Laparoscopy allows inspection of both hemidiaphragms and diagnoses associated intra-abdominal injuries. The choice of primary technique will depend on the individual clinical scenario.