Severity, Treatment, and Outcome of Acute Pancreatitis in Thailand: The First Comprehensive Review Using Revised Atlanta Classification.

. Severity and outcome of acute pancreatitis (AP) in Thailand are unknown. . A retrospective study of 250 patients with AP during 2011-2014 was performed. Severity, treatment, and outcome were evaluated. Severity was classified by revised Atlanta classification. . The mean age was 58 years and 56% were men. Etiologies were gallstones (45%), alcohol (16%), postendoscopic retrograde cholangiopancreatography (14%), and idiopathic (15%). Overall, 72%, 16%, and 12% of patients had mild, moderately severe, and severe AP, respectively. Two major types of initial intravenous fluid were normal saline (64%) and Ringer's lactate solution (RLS, 28%). Enteral nutrition was given in 77% of patients with severe AP, median duration 48 hours, and via a nasogastric tube in 67% of patients. Necrotizing pancreatitis (NP) developed in 7% of patients, and 29% of them developed infection (median 17 days). The median length of stay was 6, 9, and 13 days, and the mortality rate was 1%, 3%, and 42% in mild, moderately severe, and severe AP, respectively. The overall mortality rate was 6%. . The severity of AP in Thailand was mild, moderately severe, and severe in 72%, 16%, and 12% of patients, respectively. NP was not prevalent. Mortality was high in severe AP. Most treatments complied with standard guidelines except the underuse of RLS.