Seasonal Variations of the Incidence of Ruptured Abdominal Aortic Aneurysm at the Territory of the South Serbia

Abstract

Literature data on the association between the incidence of ruptured abdominal aorta and seasons are contradictory. The influence of climatic factors on the rupture of abdominal aorta is geographically dependent.The aim of this research was the investigation of the connection between the incidence of ruptured abdominal aorta and seasons at the territory of the southern Serbia.In this retrospective study, 59 consecutive patients, who were hospitalized in the Vascular Surgery Clinic, Clinical Center Niš, between 2008 and 2011, were involved, having the rupture of the infrarenal segment of the abdominal aorta. The incidence of the ruptured aneurysm of the abdominal aorta was analyzed with regard to calendar years, seasons and months.There was no significant connection between calendar year (χ 2 test=3,836, p=0,28), seasons (χ 2 test=3,4, p=0,334) and months (χ 2 test =11,109, p=0,434) and the incidence of the disease.According to the results of this study, it can be concluded that the incidence of ruptured abdominal aortic aneurysm in the southern Serbia is not related to seasons and months during the year.

Climatic influence on the risk of abdominal aortic aneurysm rupture

“…Most studies report a seasonal variation of rAAA, with autumn and winter (mostly autumn) being the seasons with the highest incidence of rupture. 7–11,13,16,17,20–26 Our results are in line with these findings. Climatic conditions such as low mean atmospheric pressure, 3,9,10–12 4-day variances in atmospheric pressure as independent factors, 8 low temperatures, 8,27,28 high atmospheric pressure, 29 low humidity, 29 and low global solar irradiation 30,31 have been related to rAAA occurrences.…”

Forecasting aortic aneurysm rupture: A systematic review of seasonal and atmospheric associations

“…There were 17 studies 10,12,14,17,19,[21][22][23][25][26][27]29,32,35,37,39,41 (n ¼ 17,26,335; Figs 3-5), all of which were from the Northern Hemisphere, that analyzed the seasonal variations of rAAA. The pooled proportion of rAAA was highest in the autumn season (incidence rate, 26.6%; 95% CI, 25.6%-27.7%; I 2 ¼ 15.4%), followed by winter (incidence rate, 26.2%; 95% CI, 24.1%-28.2%; I 2 ¼ 72.4%), spring (incidence rate, 24.4%; 95% CI 23.0%-25.9%; I 2 ¼ 41.9%), and summer (incidence rate, 21.1%; 95% CI, 19.3%-23.0%; I 2 ¼ 70.4%).…”

“…A quality assessment of included studies was performed using an author-modified Newcastle-Ottawa Scale with a mean score of 6/9. Eight studies scored 4 points and below 14,17,18,24,29,30,33,38 and were deemed to be methodologically weak. We identified a few consistent weaknesses among the included studies.…”