Aneurysmal subarachnoid hemorrhage in Baltic population: experience from Latvia (1996–2000)

Abstract

Better knowledge of clinical epidemiology and course of aneurysmal subarachnoid hemorrhage (ASAH) is essential for dedicated planning of the need for services. The aim of the study was to obtain a picture of epidemiology and clinical course of ASAH in Riga City (the capital of Latvia). A retrospective population-based study included residents of Riga City who suffered their first ASAH during a 5-year period from the beginning of 1996 till the end of 2000. The total number of ASAH events in the population during the study period was 292, of which 56 (19%) were fatal before reaching the hospital. There was no significant difference between age-specific incidence rates in men and women. The mean ASAH rates per 100 000 per year were 10.3 for age-adjusted incidence (in the population aged 20-79 years) and 7.2 for crude incidence. The mean age-adjusted case fatality rates were 57% for all ASAH events and 45% for those who survived admission. Our data suggest that incidence of ASAH in Baltic population can be recognized as average compared with other European regions. However, the case fatality rate of ASAH in the study population was higher than those of SAH reported from MONICA Collaborating Centers.

Aneurysmal subarachnoid hemorrhage in Germany between 2005 and 2018: A nationwide observational study

“…In Germany, we identified a mean CFR of aSAH of 15.9%. This is lower than in the UK study (ranging between 29.1% and 37.1%), and in a study from the city of Riga (45%) [23, 28]. In contrast to the meta‐analysis and to the UK study, which both described decreases in CFR over time, in Germany, aSAH‐associated CFR remained stable throughout the entire study period.…”

“…This may also explain parts of the observed differences in trends in case fatality rates (CFRs) between Germany and other regions. In Germany, we of Riga (45%) [23,28]. In contrast to the meta-analysis and to the UK study, which both described decreases in CFR over time, in Germany, aSAH-associated CFR remained stable throughout the entire study period.…”

Time trends in outcome of subarachnoid hemorrhage

“…Exclusion of 2 studies 12,14 which did not report 1-month outcomes, and 1 study with an exceptionally low case-fatality rate of 8%, 39 did not substantially alter the results. Eighteen studies including our own 11,13,[21][22][23][24][25][27][28][29][31][32][33]35,37,38 reported the mean age of cases with SAH and proportion of women. After adjustment for age and sex, there was a similar but nonsignificant reduction in case-fatality of 0.9% per annum (Ϫ0.2 to 2.0%, p ϭ 0.10).…”

Effects of meteorological factors on the onset of subarachnoid hemorrhage: A time-series analysis

“…1 Overall mortality for SAH is still more than 30%, and morbidity is also significant. [2][3][4] Although SAH comprises less than 10% of cases of cerebrovascular disease, its high associated mortality and morbidity make SAH an important public health threat, and identifying risk factors for SAH is important for its prevention. 5 Risk factors for SAH have been investigated in numerous epidemiological studies.…”