Background: Ambient particulate matter of ≤2.5 μm in diameter (PM_2.5) is named as a risk factor for cerebrovascular diseases. This investigation aimed to evaluate the impact of ambient air pollution with PM_2.5 on stroke occurrence. Methods: The study was performed in Kaunas, Lithuania, from 2010 to 2022. The daily numbers of ISs, subarachnoid hemorrhages (SAHs), and intracerebral hemorrhages (ICHs) were obtained from the Kaunas Stroke Register. The association between stroke occurrence and PM_2.5 exposure was assessed by time- and seasonally stratified Poisson regression. Results: Among middle-aged persons, 3377 had a stroke, of which 2686 (79.5%) had an IS, 469 (13.9%) had an ICH, and 222 (6.6%) had SAH. The relative risk (RR) of SAH was increased by 1.7% with an increase in daily PM_2.5 by 1 μg/m³ on the same day and at a lag of 1 day, and by 2.2% with an increase in mean PM_2.5 concentration at a lag 0–1 days by 1 μg/m³. The RR of having a SAH was increased by 0.7% with an increase in daily PM_2.5 by 1 μg/m³ on the same day. Conclusions: Significant associations between stroke occurrence and air pollution with PM_2.5 were found in the SAH and HS patients, and only in middle-aged subjects.

Background and Objectives: Over the past decades, various epidemiological analyses have reported a significant decrease in the number of deaths related to cardiovascular diseases (CVDs). Trends in acute myocardial infarction (AMI) morbidity and mortality from ischemic heart disease (IHD) were less studied in Eastern and Central Europe. This study aimed to determine and evaluate changes in AMI morbidity and mortality from IHD among the middle-aged urban Lithuanian population during 2000–2023. Materials and Methods: The data source was the Kaunas ischemic heart disease registry for residents aged 25–64. The diagnosis of AMI was based on the proposed epidemiological criteria used in the WHO MONICA project protocol. Age-standardized morbidity and mortality rates were calculated per 100,000 population. The changes in morbidity and mortality rates were calculated using the Joinpoint regression analysis method, and changes presented as a percentage estimate per year. Results: During 2000–2023, it was observed that age-standardized AMI morbidity significantly changed in the 25–64-year-old male and female population (−1.3%/yr., p = 0.006 and −2.3%/yr., p < 0.001, respectively). In males aged 25–54, a significant decrease in AMI morbidity rates by an average of 2.2%/yr. (p < 0.001) was found, contrary to the males aged 55–64, where morbidity was without substantial changes. We found a significant decrease in AMI morbidity in both age groups (the younger and older) of females, by 2.1%/yr. (p = 0.002) and 2.4%/yr. (p < 0.001), respectively. In the 25–64-year-old male population mortality from IHD significantly decreased (−2.0%/yr., p < 0.001), whereas in females it did not significantly change. Mortality from IHD in males aged 25–54 and 55–64 years significantly decreased by an average of 3.3%/yr. (p = 0.002) and 1.2%/yr., (p = 0.004), respectively. No significant trends in mortality from IHD in both age groups of females over the past 24 years were observed. Conclusions: During the study period, the age-standardized AMI morbidity among Kaunas middle-aged males and females significantly decreased. The age-standardized mortality from IHD decreased significantly among Kaunas middle-aged males, but there were no significant changes among females.

Introduction: The role of COVID-19 regarding in-hospital complications and poor outcomes for patients with ischaemic stroke (IS) is still important to explore. The aim of this study was to evaluate the risk of in-hospital lethality for IS patients respectively to their comorbidities and in-hospital complications in the context of the COVID-19 pandemic. Methods: We identified 1898 acute IS patients (749 men and 1149 women) admitted to the Lithuanian University of Health Sciences Kaunas Hospital, Lithuania, from December 2020 to February 2022. The sociodemographic, clinical, and outcome features of the patients were evaluated deploying appropriate statistical tests. Hazard ratios and 95% confidence intervals were estimated by the Cox proportional hazards regression for hospital lethality. Results: The risk of in-hospital lethality was 2.22 times higher in men suffering from IS and chronic ischaemic heart disease (cIHD) compared to those with IS and isolated arterial hypertension (iAH) (p < 0.05). COVID-19 elevated the risk of in-hospital lethality in men by 3.16 times (p < 0.05). In comorbid women with type two diabetes mellitus (DM) or cIHD, the risk of in-hospital lethality was two times higher compared to those with iAH (p < 0.05). The risk of in-hospital lethality increased significantly in both men and women, with the total number of in-hospital complications increasing per one unit. Conclusions: Of the comorbidities studied, DM and cIHD together with COVID-19 elevated the risk of in-hospital lethality significantly. Within the acute in-hospital complications, pneumonia with respiratory failure and acute renal failure showed the most significant prognostic value anticipating lethal outcomes for IS patients.

Background and Objectives: Ischemic stroke (IS) is a critical health issue, affecting individuals of all ages, sexes, and backgrounds. Mounting evidence suggests that sex indeed could play some distinct role in shaping the incidence, outcomes, and treatment of IS. In the context of the COVID-19 pandemic, contradictory findings from previous studies that also addressed sex differences in cerebrovascular diseases demonstrate the need for further focused research. This study aimed to evaluate the sex discrepancies in the clinical presentation of IS and its outcomes in patients admitted to Kaunas Hospital of the Lithuanian University of Health Sciences (LUHS), Lithuania. Materials and Methods: This is a retrospective record-based single-center study. All the study patients—727 men and 1082 women—enrolled between 1 January 2020, and 27 February 2022; suffered from acute IS; and had absolute contraindications against interventional IS treatment. These patients received a conservative non-interventional IS treatment at the neurological department of the LUHS’s Kaunas Hospital. The sociodemographic data; laboratory findings; comorbidities, including COVID-19; in-hospital complications; and outcome factors were obtained from the patients’ medical records and evaluated by deploying appropriate statistical tests. Hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated by the Cox proportional hazards regression for in-hospital lethality. Results: The mean age of IS patients was significantly higher in women compared to men (p < 0.001), as was the proportion of in-hospital deaths (19.10% and 15.36%, respectively; p < 0.05). The mean total number of in-hospital complications was again significantly higher in the group of women compared to men (p < 0.05). The prevalence of COVID-19 was higher in men compared to women (p < 0.05). COVID-19 diagnosis (HR = 1.53; p = 0.02) and acute in-hospital pulmonary complications (HR = 1.91; p = 0.008) significantly increased the risk of in-hospital lethality in men. The risk of in-hospital lethality was significantly higher in women with comorbid diabetes mellitus type 2 (DM) compared to those with comorbid isolated arterial hypertension (AH) (HR = 2.25, p = 0.007). Increased C-reactive protein elevated the risk of in-hospital lethality by more than twice in both men and women (HR = 2.46; p < 0.001 and HR = 2.28; p < 0.001, respectively). Conclusions: The following differences between men and women with IS were determined: Acute in-hospital pulmonary complications, including COVID-19, significantly increased the risk of in-hospital lethality in the male group, but not in women. However, women suffering from DM had a significantly increased risk of in-hospital lethality compared with those women IS patients with AH or chronic ischemic heart disease (IHD). Increased C-reactive protein was associated with an elevated risk of in-hospital lethality both in male and female groups.

Background and Objectives: Stroke remains a major contributor to global morbidity and mortality, with substantial geographic variation in incidence and outcomes. Although declining trends in stroke incidence and mortality have been documented in several Western European populations, countries in Eastern Europe have historically experienced a disproportionately high cardiovascular disease burden. Comprehensive long-term evaluations assessing simultaneous trends in stroke attack rates, mortality, and case-fatality in Lithuania are limited. This study aimed to investigate 24-year trends (2000–2023) in stroke epidemiology among working-age residents of Kaunas city. Materials and Methods: Data were derived from the Kaunas population-based stroke registry and included individuals aged 25–64 years. Age-standardized attack rates, mortality rates, and case-fatality rates per 100,000 population were calculated using the World Health Organization standard population. Temporal trends were assessed using Joinpoint regression analysis to estimate annual percentage changes (APCs) with corresponding 95% confidence intervals (CIs). Analyses were stratified by sex, age group (25–54 and 55–64 years), and stroke subtype (ischemic and hemorrhagic). Results: During 2000–2023, overall stroke attack rates declined significantly in both sexes, with a more pronounced reduction observed among females. Stroke mortality decreased significantly among females over the entire study period, whereas no significant overall change was observed among males, largely due to increases during 2010–2021 that attenuated earlier and subsequent improvements. Case-fatality rates demonstrated no significant overall long-term trend in either sex but exhibited marked temporal variability, including significant increases during 2010–2021 followed by substantial declines after 2021. Age-stratified analyses confirmed significant reductions in attack rates across both age groups. Ischemic stroke incidence declined significantly in both sexes, while hemorrhagic stroke mortality decreased significantly among males and females. The period 2021–2023 was characterized by pronounced reductions in mortality and case-fatality across multiple subgroups. Conclusions: Over the past two decades, the stroke burden among working-age residents of Kaunas has declined substantially, particularly among females. Despite period-specific deteriorations, recent improvements underscore the impact of advances in stroke prevention and acute care. Sustained risk factor control and continued healthcare system development remain essential to maintain favourable trends.

Background and Objectives. During the past two decades, the 28-day case-fatality rates from acute myocardial infarction (AMI) for both middle-aged and older persons have decreased significantly due to increased access to modern treatment and advances in secondary prevention. Study aim – to determine and evaluate case fatality rates from AMI and trends among the Kaunas 25-64 years population from 2000 to 2023. Materials and Methods. During the study period, data from the population-based Kaunas (Lithuania) Ischemic Heart Disease (IHD) Registry, which was implemented in accordance with the WHO MONICA project recommendations, were used. The study included individuals aged 25-64 who had an AMI or death from coronary heart disease within a 28-day period. The 28-day case-fatality rate from AMI was calculated as the proportion of deaths from AMI among all cases of AMI. To assess trends and their changes, JoinPoint regression was used. Results. Between 2000 and 2023, in males 28-day case-fatality rates from AMI was without significant changes, for females increased significantly (on average, 2.5%/year, p=0.002). The in-hospital case-fatality rates from AMI for both sexes did remained essentially unchanged. The average AMI case-fatality rates in males aged 25-54 and 55-64 were higher than for females. Only the 28-day case-fatality rates in Kaunas females aged 55-64 increased significantly (on average 3.0%/year, p=0.002). The average AMI in-hospital case-fatality rates for both males aged 25-54 and 55-64 were without significant changes as compared with females. When assessing the trend for males 2006 point was established, and no significant trend was observed. For females, 2010 was an important year, as the AMI case-fatality rate increased significantly from 2010 to 2023. When assessing changes in the in-hospital AMI case-fatality rate among males over one year (2015), it was found that significant changes occurred during the 2015-2023 period, with the rate decreasing on average by 14.7%/year. Conclusions. During the past two decades, 28-day case-fatality rates from AMI for males showed no significant changes, while for females increased. The AMI in-hospital case-fatality rates for both males and females did not change substantially. The average AMI case-fatality rates in males were significantly higher than those for females with aging. The AMI 28-day case-fatality rates for Kaunas males in aging groups showed no significant changes, but in females, the rates increased significantly with age.