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Long-Term Mortality in Acute Pancreatitis-A Population-Based Cohort Study
Daniel Selin1,2, John Maret-Ouda2,3, Viktor Oskarsson4,5
1Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.
Background:
Acute pancreatitis is a potentially life-threatening inflammation of the pancreas, with a rising incidence in most countries. Recent studies have suggested that acute pancreatitis is associated with increased long-term mortality. However, the extent to which this association is influenced by the development of chronic pancreatitis or comorbid conditions, such as malignant disease, remains unclear.
Objective:
To assess the association between acute pancreatitis and long-term all-cause mortality.
Methods:
The Swedish Pancreatitis Cohort (SwePan) was used, including all individuals with a first-time episode of acute pancreatitis in Sweden between 1990 and 2019 who survived the index hospital stay and 1:10 matched pancreatitis-free individuals from the general population. Multivariable conditional Cox proportional hazard models were used to compare mortality among individuals with acute pancreatitis compared with the matched pancreatitis-free control group.
Results:
In total, 89,465 individuals discharged from hospital with acute pancreatitis and 890,837 matched pancreatitis-free individuals were followed up for 10,155,039 person-years (mean 10.0 years). There were 33,764 (37.7%) deaths among individuals with acute pancreatitis and 265,403 (29.8%) deaths among controls. In multivariable adjusted models, mortality was increased in individuals with acute pancreatitis throughout the follow-up period, particularly among those with severe and non-gallstone-related acute pancreatitis as compared to the matched controls. These results remained statistically significant after censoring the follow-up time for recurrent acute pancreatitis or a diagnosis of chronic pancreatitis.
Conclusions:
Acute pancreatitis was associated with increased long-term mortality, even after adjusting for comorbidities, including cancer, and censoring for recurrent acute pancreatitis or chronic pancreatitis. Future research should assess causes of death and focus on understanding long-term morbidity to facilitate prevention through tailored follow-up strategies.
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Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
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Assessment: