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Seasonal Variation in Cases of Acute Appendicitis
Rawan A Rahman AlHarmi1, Sayed Ali Almahari2, Jasim AlAradi1
1Department of Surgery, Salmaniya Medical Complex, Manama, Bahrain.
Surgery Research and Practice
|March 22, 2021
Summary
Acute appendicitis cases increase in summer, with incidence positively correlating to monthly temperatures. Further research is needed to confirm causes for this seasonal variation.
Area of Science:
- Gastroenterology
- Epidemiology
- Public Health
Background:
- Acute appendicitis is a common surgical emergency.
- Seasonal variations in disease incidence are observed for various conditions.
Purpose of the Study:
- To determine if acute appendicitis incidence rises during summer months.
- To investigate if complicated appendicitis cases are more prevalent in summer.
Main Methods:
- Retrospective, single-center study of 646 appendicitis cases from 2018.
- Exclusion of conservatively managed patients.
- Pearson correlation analysis of monthly appendicitis incidence and mean temperature.
Main Results:
- Appendicitis incidence showed a moderate positive correlation with mean monthly temperature (Pearson's R = 0.5183).
- The highest number of cases (36.2%) were admitted during summer.
- Complicated appendicitis cases were observed in both summer and winter, with a slightly higher proportion in winter.
Conclusions:
- A higher incidence of acute appendicitis occurs during summer.
- Monthly appendicitis incidence demonstrates a positive correlation with ambient temperature.
- Longitudinal studies over multiple years are recommended to elucidate causal factors.
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