CT-Guided Percutaneous Drainage of Pneumoperitoneum Presenting as Acute Abdomen.

To evaluate the feasibility and effectiveness of computed tomography (CT)-guided percutaneous drainage (PD) in patients with iatrogenic pneumoperitoneum presenting as acute abdomen. In this retrospective, single-center cohort study, 16 consecutive patients (9 males, 7 females; median age, 67.5 [51-85] years) undergoing PD for managing acute abdomen caused by iatrogenic pneumoperitoneum between 2013 and 2019 were analyzed. Inclusion criteria were clinical signs of acute abdomen that was unresponsive to conservative management and pneumoperitoneum due to an iatrogenic cause after PD, observed using CT imaging. Volumetry of pneumoperitoneum was performed using computer-aided image segmentation. To evaluate the clinical outcome, the paired t-test was performed to analyze the course of pain intensity on the numerical pain rating scale (NPRS, 0-10). Patient records were reviewed to determine PD-related adverse events and median drain duration. The median pneumoperitoneum volume was 891.1 (127.7-3,677.0) mL. All PD procedures were successfully performed, with symptom relief and immediate abdominal decompression (mean segmental volume reduction, 79.8% ± 13.5). Acute abdomen symptoms were resolved, with significant improvement in pain intensity between the day of the PD procedure and the first day after the procdure (mean NPRS scores, 3.3 ± 1.9 vs 0.8 ± 1.0; P < .001). The median drain duration was 2 (1-3) days. No PD-associated adverse events were observed. After PD, 14 patients required only conservative management, whereas 2 patients with anastomotic leakage required additional surgery as they showed signs of persisting sepsis and generalized peritonitis. PD is a safe and suitable procedure for the management of symptoms in patients with iatrogenic pneumoperitoneum presenting as acute abdomen.

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