Abstract
Introduction: Pancreatic necrosis is an independent predictor of morbidity and mortality among patients with acute pancreatitis. Patients with pancreatic necrosis often undergo direct endoscopic necrosectomy, surgical and interventional radiology approaches exist. We compared the safety and outcomes of 3 techniques including endoscopic necrosectomy, fluoroscopy-guided necrosectomy by an interventional radiologist (IR-necrosectomy), and open necrosectomy performed by a surgeon (surgical necrosectomy). Methods: Using the Nationwide Readmissions Database, we identified hospitalised patients who underwent pancreatic necrosectomy from 2016 to 2019. They were identified using the International Classification of Diseases, 10th Revision, Procedure Coding System. Categorical variables were described using proportions and compared with Chi-Squared Test. Continuous variables were presented as means and compared using the adjusted Wald test. Adjusted odds ratios for adverse events associated with each technique were calculated using multivariable logistic regression analysis. Adjusted hazard ratios were calculated to compare mortality rates. Results: Of the 2,281 patients meeting the selection criteria, the method of pancreatic necrosectomy was as follows: endoscopy, 672 (52.1 ± 1.00 years); IR, 1,338 (53.2 ± 0.56 years); and open surgery, 271 (52.0 ± 1.36 years). The rate of mortality was lowest for endoscopy (hazard ratio (HR) 0.27; 95% CI 0.08-0.90; P = 0.033) followed by IR (HR 0.44; 95% CI, 0.20-0.98; P =0.045), compared to surgery. Endoscopy was associated with less post procedure bleeding compared to IR and surgical necrosectomy, respectively (n=74 vs n=195 vs n=102; P< 0.001); as well as lower rates of post procedure end organ damage including renal failure (n=134, vs n=449, vs n= 133; P< 0.001) and respiratory failure (n=0, vs n=18, vs n= 13; P=0.002). Endoscopy was associated with average shorter lengths of stay and total hospital costs when compared with IR and surgery, respectively (20.1 vs 25.8 vs 38.3 days; P < 0.001) and ($57K vs $76K vs $123K; P< 0.001). Conclusion: Endoscopic necrosectomy is associated with significantly lower risk of inpatient mortality, adverse events, length of stay, and cost when compared to IR and surgical approaches.Figure 1.: Kaplan-Meier survival curve comparing endoscopic, radiologic, and surgical pancreatic necrosectomy
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