Seasonal Fluctuations in Acute Gastrointestinal Bleeding

Circadian and seasonal rhythms of acute upper gastrointestinal bleeding in Beijing

“…These are shown graphically in the map (figure 3). Nineteen of them have comparable results to ours with respect to seasonal rhythms 1 4 5 14–29. There is a paucity of studies from the southern hemisphere, but one study in Chile showed a similar seasonal variation, with a higher incidence from March to July, the autumn and winter of Chile 23.…”

“…Many previous investigators have found similar seasonal variation in variously selected populations of patients with upper gastrointestinal pathology of acute or chronic nature 1 4 5 14–29. These studies may contribute to a biometeorological explanation of the phenomenon.…”

“…This result is similar to prior studies carried out in other countries. The adjusted occurrence frequency of AUGIB during each decade of age showed that a rising relative risk of AUGIB with age is not unexpected 2 4 5. Considering that the ascending curve has an approximately exponential increase (R 2 =0.965, p<0.001), it is reasonable to focus on the occurrence of AUGIB in aged people and find modifiable factors that may reduce their risk of AUGIB.…”

“…We reviewed 26 studies focusing on the seasonal variation of bleeding from gastric ulcers, duodenal ulcers and/or varices 1 4 5 10 14–29 34–39. These are shown graphically in the map (figure 3).…”

Seasonal Impacts on the Incidence of Esophageal Variceal Hemorrhage: A Nationwide Analysis across a Decade

“…However, the underlying basis for such variation was unclear and whether esophageal variceal bleeding rates also varied with seasonal change was not well described. [8][9][10] Therefore, the current study aimed to assess whether seasonal and monthly variations exist with regard to the hospitalizations and outcomes of esophageal variceal hemorrhage.…”