Abstract:
AIM:A circannual variation in the onset of several acute diseases, mostly dealing with cardiovascular system, has been reported. The present study was to verify the possible existence of a seasonal variability in the onset of acute pancreatitis. METHODS:All patients consecutively admitted to the Hospital of Ferrara, Italy, between January 1998 to December 2002, whose discharge diagnosis was acute pancreatitis, were considered. According to the time of admission, cases were categorized into twelve 1-mo intervals and in four periods by season. chi (2) test for goodness of fit and partial Fourier series were used for statistical analysis. RESULTS:During the study period, 549 cases of acute pancreatitis were observed. A significant peak of higher incidence was found in March-May, both for total population, males and subgroups with and without cholelithiasis or alcoholism. Fourier analysis showed the existence of a circannual rhythmic pattern with its main peak in March (95% C.L.: February-April, P = 0.005), and a secondary one in September. Death occurred more frequently in December-February, compared to the other periods (P = 0.029), and chronobiologic analysis yielded a seasonal peak in November-December (P<0.001). CONCLUSION:This study shows the existence of a circannual variation in the onset of acute pancreatitis, with a significantly higher frequency of events in the spring, especially for patients with cholelithiasis or alcoholism. Moreover, events occurring during the colder months seem to be characterized by a higher mortality rate.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Gallerani M,Boari B,Salmi R,Manfredini Rdoi
10.3748/wjg.v10.i22.3328keywords:
subject
Has Abstractpub_date
2004-11-15 00:00:00pages
3328-31issue
22eissn
1007-9327issn
2219-2840journal_volume
10pub_type
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