The Impact of Non-Alcoholic Fatty Pancreas Disease on Outcome of Acute Pancreatitis

Study Overview
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Brief Summary
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Obesity is a well-established risk factor for acute pancreatitis (AP). As for non-alcoholic fatty pancreas disease (NAFPD), it is evident that it is correlated with obesity. This is apparently the first study evaluating the association between NAFPD and severity of AP after taking into account several covariates.

Detailed Description
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Acute pancreatitis (AP) is a common disease with a highly variable clinical course, which can range from a mild, self-limited disease to severe disease with a mortality rate of 10-20%. It is vital to distinguish severe cases early because they require more aggressive fluid resuscitation and early nutritional support. Obesity is a well-established risk factor for acute pancreatitis (AP). It leads to ectopic fat accumulation in visceral organs, such as the liver, skeletal muscles, heart and pancreas. Assuming that attenuation in the pancreas seen on unenhanced computed tomography (CT) scanning is inversely associated with severe outcomes in AP, we investigated the relationship between NAFPD and severity of AP and the significance of pancreas attenuation for the prognosis and mortality in AP patients. The result of this study suggest that decreased pancreas attenuation and P/S ratio are strong predictors of severe pancreatitis, mortality, systemic complication.

Official Title
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The Impact of Non-Alcoholic Fatty Pancreas Disease on Outcome of Acute Pancreatitis

Conditions
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Non-Alcoholic Fatty Pancreas Disease, Acute Pancreatitis

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: diagnosed with AP age>18y Exclusion Criteria: age<18y missing data in the electronic medical record prior attacks of AP without spleen with ambiguous pancreatic margin

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 100 Years

Sexes Eligible for Study
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All

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Comparison of characteristics and variables according to severity of AP. | Comparison of characteristics and variables according to severity of AP by One-Way Analysis of variance(ANOVA) and Pearson chi-square test. | the physical examination data in the year of 2017 | 
| The association between pancreas attenuation and ICU transfer, pancreatitis severity, systemic and local complications and prognostic scores (APACHE II scores, Ranson score, BISAP score and SIRS). | The association between pancreas attenuation and ICU transfer, pancreatitis severity, systemic and local complications and prognostic scores (APACHE II scores, Ranson score, BISAP score and SIRS) by Likelihood Ratio test. | the physical examination data in the year of 2017 | 
| BMI adjusted hazard ratios (HRs) and 95% CIs for the relationship between NAFPD and mortality of acute pancreatitis, evaluated by pancreas attenuation (HU), P/S ratio. | BMI adjusted hazard ratios (HRs) and 95% CIs for the relationship between NAFPD and mortality of acute pancreatitis, evaluated by pancreas attenuation (HU), P/S ratio by cox proportional hazards models. | the physical examination data in the year of 2017 |