Reduction of intra-abdominal pressure after percutaneous catheter drainage of pancreatic fluid collection predicts survival.

Objective: Intra-abdominal hypertension (IAH) can adversely affect the outcome in patients of acute pancreatitis (AP). Effect of percutaneous drainage (PCD) on IAH has not been studied. We studied the effect of PCD on IAH in patients with acute fluid collections.

Material And Methods: Consecutive patients of AP undergoing PCD between Jan 2016 and May 2018 were evaluated for severity markers, clinical course, hospital and ICU stay, and mortality. Patients were divided into two groups: with IAH and with no IAH (NIAH). The two groups were compared for severity scores, organ failure, hospital and ICU stay, reduction in IAP and mortality.

Results: Of the 105 patients, IAH was present in 48 (45.7%) patients. Patients with IAH had more often severe disease, BISAP ≥2, higher APACHE II scores and computed tomography severity index (CTSI). IAH group had more often OF (87.5% vs. 70.2%, p = 0.033), prolonged ICU stay (12.5 vs. 6.75 days, p = 0.007) and higher mortality (52.1% vs. 15.8%, p < 0.001). After PCD, IAP decreased significantly more in the IAH group (21.85 ± 4.53 mmHg to 12.5 ± 4.42 mmHg) than in the NIAH group (12.68 ± 2.72 mmHg to 8.32 ± 3.18 mmHg), p = <0.001. Reduction of IAP in patients with IAH by >40% at 48 h after PCD was associated with better survival (63.3% vs. 36.7%, p = 0.006).

Conclusion: We observed that patients with IAH have poor outcome. PCD decreases IAP and a fall in IAP >40% of baseline value predicts a better outcome after PCD in patients with acute fluid collections.