First-ever Ischemic Stroke Research Articles

Cognitive performance is associated with return to work after ischemic stroke in young adults: The ODYSSEY study.

Limited data exist on cognitive performance and return to work after ischemic stroke, especially in patients under 50 years. We investigated whether cognitive performance in the subacute phase after ischemic stroke in young adults was associated with unemployment and the inability to retain their jobs among those who returned to work. We conducted a multicenter prospective cohort study between 2013 and 2021, enrolling patients aged 18-49 years with first-ever ischemic stroke. Cognitive assessments were performed within 6 months following the index event, covering seven cognitive domains. We categorized patients with cognitive impairment (Z-score < -1.5 on a domain) and as no/mild or major vascular cognitive disorder (VCD; Z-score < -2.0 in one or more domains). Cognitive performance and other predefined characteristics were chosen to identify factors associated with unemployment and, among patients who returned to work, the inability to maintain employment. Of 525 patients (median age 44.3 [IQR 38.0-47.4] years; 243 women [46.3%]); median follow-up of 6.6 [IQR 4.5-8.2] years), 426 patients (81.1%) returned to work. Sixty-five patients (15.3%) were unable to maintain employment. In multivariable logistic regression analysis, major VCD (OR = 2.0; 95% CI 1.3-3.0; p = 0.002) and cognitive impairment in processing speed (OR = 2.0; 95% CI 1.3-3.3; p = 0.004) were associated with unemployment, but not with the inability to maintain employment. In young patients after a first-ever ischemic stroke, major VCD and impaired processing speed in the subacute phase after stroke were independently associated with unemployment, but not with the inability to maintain employment.

TOUlouse TAhiTI Stroke Study (TOUTATIS): A comparative analysis of young pacific islanders with ischemic stroke.

TOUlouse TAhiTI Stroke Study (TOUTATIS): A comparative analysis of young pacific islanders with ischemic stroke.

Intracranial atherosclerotic plaque features on vessel wall imaging predict first ever and recurrence of stroke: a meta-analysis.

Intracranial atherosclerotic disease (ICAD) features on vessel wall magnetic resonance imaging (VW-MRI) are associated with first-ever or recurrent ischemic stroke (IS) or transient ischemic attack (TIA). There are multiple longitudinal ICAD VW-MRI studies, but they are limited by small sample size, non-standardized imaging acquisition and analysis, and some controversial results. Hence, we conducted the current meta-analysis of intracranial plaque features predicting recurrence of IS. PubMed, Web of Science, and EMBASE databases were searched through March 2024. Two independent reviewers extracted data on study design, VW-MRI techniques, and patient outcome. Quality assessment was used by the NOS tool. Subgroup analyses, sensitivity analysis, and evaluation of publication bias were also performed. For recurrent IS, eighteen studies were included for meta-analysis, comprising 2240 participants, and 472 participants had recurrent IS during an average of 16-month follow-up. All studies were of high quality with an NOS score ≥ 7. Plaque enhancement (OR 2.18, [95% CI 1.70-4.65]), plaque enhancement ratio (SMD 0.46, [95% CI 0.15-0.77]), plaque thickness, (SMD 0.271, [95% CI 0.047-0.496]), T1-weighted (T1W) hyperintensity, (OR 2.58, [95% CI 1.56-4.26]), and degree of stenosis (SMD 0.41, [95% CI 0.03-0.79]) significantly predicted IS recurrence. Subgroup analyses found plaque enhancement was significantly higher in the IS and TIA recurrence group as compared to the non-recurrence group (OR 3.39, 95% CI 1.84-6.22). Plaque enhancement, plaque enhancement ratio, plaque thickness, T1W hyperintensity and degree of stenosis emerged as strong imaging biomarkers of recurrence of stroke. Clinical trial registration no: CRD42023479678. Questions Several studies suggest that vessel wall MRI (VWMRI) features of intracranial atherosclerotic disease (ICAD) may be associated with first-time or recurrent ischemic strokes, though this remains a debated topic. Findings Our study demonstrates that plaque enhancement, plaque enhancement ratio, plaque thickness, T1W hyperintensity, and degree of stenosis are strong imaging biomarkers for predicting stroke recurrence. Clinical relevance Incorporating these features into post-stroke evaluations using VWMRI could help guide patient management more effectively, enabling more targeted treatments for secondary stroke prevention.

Comorbidity Patterns in Patients with First-ever Acute Ischemic Stroke and Their Associations with Functional Outcomes.

Acute ischemic stroke (AIS) is the most prevalent type of stroke, associated with a significant burden of functional impairments. About 94.2% of AIS patients present with multiple comorbidities, but how they affect AIS prognosis remains largely unknown. This study aims to comprehensively assess the associations of a wide range of AIS-related comorbidities, their patterns, with functional impairments in AIS patients. This study utilized data from the China National Stroke Registry 3 (CNSR3), a prospective registry encompassing 201 Chinese hospitals from August 2015 to March 2018. A total of 10,508 AIS patients were included, with a median age of 62.0 years (IQR: 54.0-70.0), and 65% were female. Eighteen AIS-related comorbidities were considered in the analysis and frequent pattern mining was employed to identify potential comorbidity patterns among AIS patients. Functional outcomes at one year after an AIS event were assessed using the Modified Rankin Scale (mRS). Logistic regression models were utilized to evaluate associations of comorbidities, their patterns with AIS prognosis. Furthermore, association rule mining was applied to explore the hidden comorbidity combinations, and their relationship with functional outcomes based on the identified patterns. Comorbidity was observed in 88.9% of AIS patients. The majority of AIS patients exhibited one to three comorbidities. Eight patterns of main comorbidities among AIS patients were identified. The pattern of common metabolic disorders, coronary heart disease, and atrial fibrillation demonstrated the strongest association (OR = 2.49, 1.59 to 3.89) with the development of poor functional outcomes. The further combination of heart failure, and arthritis significantly increases the probability of poor functional outcomes, with lifts of 3.11 and 5.52, respectively. Our study revealed that comorbidity is highly prevalent among AIS patients in China, encompassing diverse patterns. Specific comorbidities and comorbidity patterns are closely associated with poor functional outcomes. Our findings emphasized the importance of prioritizing comprehensive management of AIS and AIS-related comorbidities to reduce the risk of disability among AIS patients.

First ischemic stroke in young adults: Sex and age-related differences in stroke rates, risk factors, and etiologies.

Sex differences in stroke incidence, vascular risk factors (VRFs), and etiologies among young adults remain underexplored, particularly regarding age-related patterns. We retrospectively analyzed young adults (18-55 years) with first-ever ischemic stroke treated at certified acute stroke units/centers between 2014 and 2022, using Swiss Stroke Registry data. Stroke rates (per 100,000 person-years), VRFs, and etiologies were assessed by age and sex. Among 3,995 stroke patients, stroke rates were similar between sexes until age 35, after which men showed a more pronounced exponential increase. This rise was particularly notable in patients with elevated BMI and ⩾2 VRFs. The proportion of patients with ⩾2 VRFs rose with age (18-35: 22%; 36-50: 48%; 51-55: 63%). While no statistically significant differences in VRF profiles were observed between men and women aged 18-35, men accumulated VRFs about five years earlier than women, leading to a higher prevalence of multiple VRFs in men aged 36-50, with the gap narrowing in the 51-55 group. Stroke etiologies shifted with age: patent foramen ovale and cervical artery dissection predominated in younger patients, while large artery atherosclerosis, small vessel disease, and strokes of undetermined etiology increased with age, with notable sex differences. This study highlights sex and age differences in ischemic stroke rates, VRFs, and etiologies among adults under 55 years. After 35, stroke rates rose more sharply in men, paralleling their higher VRF burden. These findings emphasize the importance of early management of VRFs-including overweight-to mitigate stroke risk.

Prognostic Models of Mortality Following First-Ever Acute Ischemic Stroke: A Population-Based Retrospective Cohort Study.

There is a lack of population-based studies focusing on guideline-based prognostic models for stroke. This study aimed to develop and validate a prognostic model that predicts mortality following a first-ever acute ischemic stroke. The study included 899 adult patients ( ≥ 18 years) with confirmed diagnosis of first-ever acute ischemic stroke enrolled in the Malaysian National Stroke Registry (NSR) from January 2009 to December 2019. The primary outcome was mortality within 90 days post-stroke (266 events [29.6%]). The prognostic model was developed using logistic regression (75%, n = 674) and internally validated (25%, n = 225). Model performance was assessed using discrimination (area under the curve (AUC]) and calibration (Hosmer-Lemeshow test [HL]). The final model includes factors associated with increased risk of mortality, such as age (adjusted odds ratio, aOR 1.06 [95% confidence interval, CI 1.03, 1.10; p < 0.001]), National Institutes of Health Stroke Scale (NIHSS) score aOR 1.08 (95% CI 1.08, 1.13; p = 0.004), and diabetes aOR 2.29 (95% CI 1.20, 4.37; p = 0.012). The protective factors were antiplatelet within 48 h. aOR 0.40 (95% CI 0.19, 0.81; p = 0.01), dysphagia screening aOR 0.30 (95% CI 0.15, 0.61; p = 0.001), antiplatelets upon discharge aOR 0.17 (95% CI 0.08, 0.35; p < 0.001), lipid-lowering therapy aOR 0.37 (95% CI 0.17, 0.82; p = 0.01), stroke education aOR 0.02 (95% CI 0.01, 0.05; p < 0.001) and rehabilitation aOR 0.08 (95% CI 0.04, 0.16; p < 0.001). The model demonstrated excellent performance (discrimination [AUC = 0.94] and calibration [HL, X 2 p = 0.63]). The study developed a validated prognostic model that excellently predicts mortality after a first-ever acute ischemic stroke with potential clinical utility in acute stroke care decision-making. The predictors could be valuable for creating risk calculators and aiding healthcare providers and patients in making well-informed clinical decisions during the stroke care process.

Abstract WP119: Sex differences in longitudinal functional, neurological, cognitive, and quality of life outcomes in the year after first-ever ischemic stroke

Abstract WP119: Sex differences in longitudinal functional, neurological, cognitive, and quality of life outcomes in the year after first-ever ischemic stroke

Associations of Social, Behavioral, and Clinical Factors With Sex Differences in Stroke Recurrence and Poststroke Mortality.

Few population-based studies have assessed sex differences in stroke recurrence. In addition, contributors to sex differences in recurrence and poststroke mortality, including social factors, are unclear. We investigated sex differences in these outcomes and the contribution of social, clinical, and behavioral factors to the sex differences. First-ever ischemic stroke cases identified from 2008 to 2019 from the population-based Brain Attack Surveillance in Corpus Christi Project in Texas were included and followed for recurrence and all-cause mortality through 2020. Sex differences in outcomes with and without adjustment for potential confounding factors, including social, behavioral, and clinical factors, were examined using Cox proportional hazard models. Factors that changed the log hazard ratio (HR) for sex by at least 10% after adjustment were identified as confounders/contributors. Final models were adjusted for all identified confounders. Of 2326 participants (mean age, 68 years; 48% women; 57% Mexican American), over median follow-ups of 5.4 years for recurrence and 3.7 years for mortality, 274 recurrences and 965 deaths occurred. No significant sex differences in recurrence were noted in unadjusted (HR, 0.89 [95% CI, 0.70-1.13]), age-adjusted (HR, 0.92 [95% CI, 0.72-1.18]), or fully adjusted models (HR, 0.88 [95% CI, 0.67-1.16]). Although women had a higher crude mortality rate than men (HR, 1.22 [95% CI, 1.08-1.38]), this sex difference disappeared after age adjustment (HR, 0.91 [95% CI, 0.80-1.03]). Other factors contributing to the sex difference included education, marital status, prestroke depression, health behaviors, initial stroke severity, prestroke disability, comorbidities, atrial fibrillation, and coronary artery disease. After simultaneously adjusting for all identified confounders, women had lower poststroke mortality (HR, 0.79 [95% CI, 0.68-0.91]). Sex differences in stroke recurrence were not apparent. Women had a higher unadjusted poststroke mortality rate but lower adjusted mortality than men. Social and psychosocial factors, alongside clinical factors, primarily explained the sex disparity in poststroke mortality.

Ischemic heart disease among South Asians with ischaemic stroke in three countries across two continents: the BRAINS study.

Ischemic heart disease among South Asians with ischaemic stroke in three countries across two continents: the BRAINS study.

Long-Term Post-Stroke Cognition in Patients With Minor Ischemic Stroke is Related to Tract-Based Disconnection Induced by White Matter Hyperintensities.

Over a third of minor stroke patients experience post-stroke cognitive impairment (PSCI), but no validated tools exist to identify at-risk patients early. This study investigated whether disconnection features derived from infarcts and white matter hyperintensities (WMH) could serve as markers for short- and long-term cognitive decline in first-ever minor ischemic stroke patients. First-ever minor ischemic stroke patients (NIHSS ≤ 7) were prospectively followed at 72-h, 6 months, and 36 months post-stroke with cognitive tests and brain MRI. Infarct and WMH volumes were semi-automatically assessed on DWI and FLAIR sequences. Bayesian tract-based disconnection models estimated remote pathological effects of infarcts and WMH. Associations between disconnection features and cognitive outcomes were analyzed using canonical correlation analyses, adjusted for age, education, and multiple comparisons. Among 105 patients (31% female, mean age 63 ± 12 years), infarct volume averaged 10.28 ± 17.10 cm3 and predominantly involved the middle cerebral artery territory (83%). WMH burden was higher in frontal periventricular white matter. Infarct-based features did not significantly relate to PCSI. However, a WMH-derived disconnection factor, involving commissural and frontal tracts, and the right superior longitudinal fasciculus, was significantly associated with PSCI at 6 months (OR = 9.96, p value = 0.02) and 36 months (OR = 12.27, p value = 0.006), particularly in executive/attention, language, and visuospatial domains. This factor, unrelated to WMH volume, outperformed demographic and clinical predictors of PSCI. WMH-induced disconnection may be associated with short- and long-term PSCI in minor stroke. Routine MR-derived features could identify at-risk patients for rehabilitation trials.

Relationship between social support, functional outcomes and health-related quality of life in working-aged adults at three months after ischemic stroke: results from the FRAILTY study

BackgroundThe relationship between social support and functional outcomes and health-related quality of life (HRQoL) after ischemic stroke (IS) remains unclear, especially in working-aged patients.AimTo assess the relationship between perceived social support, functional outcomes, post-stroke psychosocial symptoms, and HRQoL in working-aged adults three months after IS.MethodsA prospective and correlational design was used. Patients of working age (18–65 years) admitted for first-ever IS were enrolled in the prospective FRAILTY (Factors Affecting the Quality of Life After Ischemic Stroke in Young Adults) study (NCT04839887). HRQoL (using the Stroke Impact Scale, Quality of Life in Neurological Disorders), social support (using the Multidimensional Scale of Perceived Social Support), functional outcomes (using a modified Rankin Scale—mRS), and post-stroke psychosocial symptoms were assessed three months after IS. Descriptive statistics, Wilcoxon signed-rank test, Spearman’s correlations and multiple linear regression were used for analysis.ResultsA total of 121 (54.5% males, mean age 51.7 ± 8.4 years) IS patients were analyzed. Of those, 87.7% had excellent clinical outcomes (mRS 0–1) after three months. Patients reported significant improvement in all domains of self-reported HRQoL except memory and communication after three months. The overall perceived social support was not associated with HRQoL domains. Post-stroke depression was negatively associated with all domains of HRQoL. Living arrangements (living alone) and post-stroke depression were negatively associated with perceived social support after IS.ConclusionsMore insight into the relationship between variables of HRQoL in working-aged adults might increase their social participation, strengthen supportive relationships, and promote their recovery and rehabilitation process. Focusing on the management of emotional problems and supporting functional outcomes may be modifiable factors that may represent targets for strategies to improve the HRQoL. Further research is needed to clarify the relationship between pre-stroke perceived social support and its types and post-stroke psychosocial symptoms in the long term.

The effect of L-carnitine supplementation on anthropometric and malnutrition status in acute ischemic stroke patients: a triple-blinded randomized clinical trial

BackgroundMalnutrition is a significant challenge in stroke patients, affecting both rehabilitation and independence. This study aims to evaluate whether early L-carnitine supplementation can effectively improve anthropometric parameters and malnutrition status in acute-phase ischemic stroke patients to mitigate the catabolic state.MethodsEighty-two first-ever ischemic stroke patients were randomly assigned to either the L-carnitine group (1000 mg three times/day for seven consecutive days) or the matching placebo group. The study outcomes based on intention-to-treat analyses included changes in weight, body mass index, triceps skinfold thickness, mid-arm circumference, mid-arm muscle circumference, arm muscle area, calf circumference, serum ALB and malnutrition status over the seven-day treatment protocol. Malnutrition was assessed based on the serum ALB concentration, mid-arm muscle circumference, and triceps skinfold thickness. Analysis of covariance (ANCOVA) was applied for assessing the between-group changes along with adjusting the baseline mean value effect.ResultsPatients receiving L-carnitine had significantly lower changes in terms of weight, body mass index, triceps skinfold thickness, mid-arm circumference, mid-arm muscle circumference, and calf circumference than did those in the placebo group. After the intervention, the placebo group experienced a significantly greater reduction in the mid-arm muscle circumference indicator (P < 0.001). The between-group change in the serum ALB concentration significantly increased in the L-carnitine group (P = 0.001). Moreover, the L-carnitine group was less malnourished than the placebo group [17 (41.5%) vs. 30 (73.2%), respectively; P = 0.01], after the intrvention. The “recovery” frequency was significantly greater in the L-carnitine group (18 (43.9%) vs. 3 (7.3%), P < 0.001) than the placebo group.ConclusionsEarly L-carnitine supplementation effectively improves anthropometric indices and malnutrition, muscle wasting, and rapid weight loss in acute ischemic stroke patients, highlighting its potential as a supportive nutritional therapy during stroke rehabilitation.Trial registrationThe current clinical trial study was registered in the Iranian Registry of Clinical Trials (registration code: IRCT20221206056734N1) at 2023-02-11.

Early vs Late Anticoagulation After Ischemic Stroke in Patients With Atrial Fibrillation and Covert Brain Infarcts.

Covert brain infarcts (CBIs) in patients with first-ever ischemic stroke (IS) and atrial fibrillation (AF) are associated with an increased risk of stroke recurrence. We aimed to assess whether CBIs modify the treatment effect of early vs late initiation of direct oral anticoagulants (DOACs) in patients with IS and AF. We conducted a post hoc analysis of the international, multicenter, randomized-controlled ELAN trial, which compared early (<48 hours after ischemic stroke for minor and moderate stroke, 6-7 days for major stroke) vs late (>48 hours for minor, 3-4 days for moderate, 12-14 days for major stroke) initiation of DOACs in patients with IS and AF. The primary outcome was a composite of recurrent IS, symptomatic intracranial hemorrhage (sICH), major extracranial bleeding, systemic embolism, or vascular death within 30 days after stroke; secondary outcomes were the individual components. We estimated outcomes based on the presence of CBIs (any CBI vs no CBI) on prerandomization imaging (core-lab rating) using adjusted risk differences (aRDs) between treatment arms. Point estimates and 95% CIs are presented without reporting p values. Of the 1,694 participants with first-ever IS included (median age: 77 years, 45.9% female), 678 (40.0%) had CBI. The imaging core-lab interrater reliability for the presence of CBI was 0.87 (0.81-0.94). The primary outcome occurred in 8 (2.3%; recurrent IS: 3/342) of 342 participants with CBI assigned to the early treatment arm vs 20 (6.0%; recurrent IS: 12/336) of 336 assigned to the late treatment arm (aRD: -3.6%, 95% CI -6.6 to -0.6) (p for interaction: 0.063). With early DOAC treatment, IS recurrence risk was lower in participants with CBI (aRD: -2.7%, 95% CI -5.0 to -0.4), but not in participants without CBI (aRD: -0.4, 95% CI -2.1 to 1.2). No sICH was observed in the early treatment group. The presence of CBI may indicate a subgroup of patients with first-ever IS and AF who particularly benefits from early DOAC initiation to prevent ischemic event recurrence, without increasing harm. Our findings should be considered in clinical decision making regarding timely DOAC treatment in patients with stroke and AF. This study provides Class II evidence that in patients with covert brain infarcts, atrial fibrillation, and first-ever ischemic stroke, early (vs late) initiation of DOACs is associated with lower risk of recurrent stroke with no increase in harm. URL: clinicaltrials.gov/study/NCT03148457; Unique identifier: NCT03148457; submitted: April 7, 2017; first patient enrolled: November 6, 2017.

Hypercoagulable states in young adults with ischemic stroke in a Stroke Belt state: a retrospective study.

We theorize that the southeastern United States has a higher stroke mortality rate and higher recurrent ischemic stroke rate than the rest of the United States due to (1) an increased prevalence of hypercoagulable states among young adults in the region, (2) failure to diagnose hypercoagulable states as the cause of ischemic stroke in young adults, and (3) underutilization of anticoagulation for ischemic stroke secondary prevention in young adults with hypercoagulable states. In an attempt to investigate this hypothesis, we conducted a retrospective chart review of 311 inpatients with first-ever ischemic stroke from age 18 to 55 years at an Oklahoma academic medical center from 1 July 2011 to 30 April 2017. Using Chi-squared test, we compared the stroke etiologic diagnosis of the attending neurologist at discharge-when hypercoagulable profile results were rarely available-to the diagnosis of a vascular neurologist postdischarge who had access to all available etiologic test results. The inpatient neurologists identified the stroke etiology as hypercoagulable state in 79 patients (25.57%) and undetermined etiology in 105 (33.98%). With the benefit of final hypercoagulable profile results, the postdischarge vascular neurologist identified the stroke etiology as hypercoagulable state in 167 (54.22%, 95% CI 48.64-59.70%, p-value <2.2e-16) and undetermined etiology in 28 (9.09%, 95% CI 6.36-12.83%, p-value 1.03e-14). There was no significant change in the proportion of ischemic strokes classified under all other stroke etiologies. We conclude that hypercoagulable states are a common and underrecognized cause of ischemic stroke in young adults in the U.S. Stroke Belt.

Three-dimensional kinematic analysis can improve the efficacy of acupoint selection for post-stroke patients with upper limb spastic paresis: A randomized controlled trial.

Three-dimensional kinematic analysis can improve the efficacy of acupoint selection for post-stroke patients with upper limb spastic paresis: A randomized controlled trial.

The challenge of long-term stroke outcome prediction and how statistical correlates do not imply predictive value.

Personalized prediction of stroke outcome using lesion imaging markers is still too imprecise to make a breakthrough in clinical practice. We performed a combined prediction and brain mapping study on topographic and connectomic lesion imaging data to evaluate (i) the relationship between lesion-deficit associations and their predictive value and (ii) the influence of time since stroke. In patients with first-ever ischaemic stroke, we first applied high-dimensional machine learning models on lesion topographies or structural disconnection data to model stroke severity (National Institutes of Health Stroke Scale 24 h/3 months) and functional outcome (modified Rankin Scale 3 months) in cross-validation. Second, we mapped the topographic and connectomic lesion impact on both clinical measures. We retrospectively included 685 patients [age 67.4 ± 15.1, National Institutes of Health Stroke Scale 24 h median(IQR) = 3(1; 6), modified Rankin Scale 3 months = 1(0; 2), National Institutes of Health Stroke Scale 3 months = 0(0; 2)]. Predictions for acute stroke severity (National Institutes of Health Stroke Scale 24 h) were better with topographic lesion imaging (R² = 0.41) than with disconnection data (R² = 0.29, P = 0.0015), whereas predictions at 3 months (National Institutes of Health Stroke Scale/modified Rankin Scale) were generally close to chance level. In the analysis of lesion-deficit associations, the correlates of more severe acute stroke (National Institutes of Health Stroke Scale 24 h > 4) and poor functional outcome (modified Rankin Scale 3 months ≥ 2) were left-lateralized. The lesion location impact of both variables corresponded in right-hemisphere stroke with peaks in primary motor regions, but it markedly differed in left-hemisphere stroke. Topographic and disconnection lesion features predict acute stroke severity better than the 3-months outcome. This suggests a likely higher impact of lesion-independent factors in the longer term and highlights challenges in the prediction of global functional outcome. Prediction and brain mapping diverge, and the existence of statistically significant associations-as here for 3-months outcomes-does not imply predictive value. Routine neurological scores better capture left- than right-hemispheric lesions, further complicating the challenge of outcome prediction.

Age-Specific Rural-Urban Disparities in the Incidence of Ischemic Stroke in the Netherlands.

Multiple studies found a higher ischemic stroke incidence in rural areas compared with urbanized areas, often explained by a low socioeconomic status (SES). However, this has rarely been investigated specifically in younger adults. We aimed to investigate the age-specific (15-49 years vs 50+ years) incidence of ischemic stroke in rural and urbanized municipalities within the Netherlands. Patients with a first-ever ischemic stroke (15 years or older) between 1998 and 2018 were included in this registry-based study through linkage of Dutch national hospital administrative registries. Ischemic stroke was defined through ICD-9 and ICD-10 codes. The urbanization grade of the municipality was defined by the address density in 5 subgroups (from most urban ≥2,500 addresses per km2 to rural <500 addresses per km2). The urbanization grade-specific incidence rate per 100,000 person-years, standardized for age and sex, and incidence rate ratios (IRRs) were calculated. In addition, we performed stratified analyses for young age groups (15-39 and 40-49 years) and neighborhood SES (nSES), which was calculated using welfare, level of education, and recent labor participation. In total, 23,720 patients aged 15-49 years (median age 44.7 years [interquartile range (IQR) 40.6-48.8], 51.6% women) and 369,107 patients aged older than 50 years (median age 76.7 years [IQR 68.8-84.7], 50.8% women) were included. Patients aged 15-49 years living in rural areas showed a 5% higher risk of ischemic stroke (IRR 1.05 [99% CI 0.98-1.13]) compared with patients in urbanized areas, whereas for persons aged 50 years and older, this risk was decreased by 3% (IRR 0.97 [99% CI 0.95-0.98]). For patients aged 15-39 years, this risk was 20% higher (IRR 1.20 [99% CI 1.05-1.37]), and for patients aged 40-49 years, the risk did not differ (IRR 1.01 [99% CI 0.93-1.09]). The rural-urban disparities in all age groups remained similar when stratified for nSES. The incidence of ischemic stroke is higher among persons aged 15-49 years living in rural areas compared with urban areas, which was driven by a risk-increase in patients 15-39 years. This was reversed among persons aged 50 years and older. Our findings were not fully explained by differences in nSES. This suggests that different age-specific predictors might play a role in rural-urban disparities in ischemic stroke incidence.

Impact of glycemic treatment and blood glucose monitoring on outcomes in patients with acute ischemic stroke without prior diabetes: a longitudinal cohort study

ObjectivesTo explore the short- and long-term effects of glycemic management—through glycemic treatment and blood glucose monitoring (BGM)—on stroke recurrence and mortality specifically in patients experiencing a first-ever ischemic stroke (FIS) with hyperglycemia (FISHG) who have not previously been diagnosed with diabetes mellitus (DM).MethodsWe gathered data on patients who were registered on Taiwan’s National Health Insurance Research Database from 2000 to 2015. We one-fold propensity-score-matched (by sex, age, and index date) 207,054 patients into 3 cohorts: those with FIS (1) without hyperglycemia, (2) hyperglycemia without glycemic treatment, and (3) hyperglycemia with glycemic treatment. We used Cox proportional hazard regression to evaluate the short- (within 1 year after FIS) and long-term (9.3 ± 8.6 years after FIS) prognostic effects of glycemic management on stroke recurrence and mortality of FISHG.ResultsStroke recurrence and mortality were significantly more likely in the patients with FISHG than their counterparts without hyperglycemia (p < 0.05). Under glycemic treatment, patients with FISHG demonstrated lower risk of mortality at every follow-up than those without (p < 0.001) but were not less likely to have stroke recurrence (p > 0.05). Integrating BGM with glycemic treatment in the FISHG cohort significantly reduced the risk of stroke recurrence compared to patients receiving only glycemic treatment at 1-month, 3-month, 6-month, and 1-year post-stroke follow-ups (adjusted hazard ratios = 0.84, 0.90, 0.88, and 0.92, respectively); additionally, this approach significantly decreased mortality risk at each post-stroke follow-up period (p < 0.05).ConclusionsBGM combined with glycemic treatment significantly improves prognosis in patients with FISHG who have not been previously diagnosed with DM, reducing the risks of stroke recurrence and mortality.

The Role of Complete Blood Count-Derived Inflammatory Biomarkers as Predictors of Infection After Acute Ischemic Stroke: A Single-Center Retrospective Study.

Background and Objectives: Although a wide range of hematological parameters are used as blood-based inflammatory biomarkers, the role of complete blood count-derived inflammatory biomarkers in infection after acute ischemic stroke (AIS) is modest. Therefore, this study aimed to explore complete blood count-derived inflammatory biomarkers as predictors of infection after AIS. Materials and Methods: A single-center retrospective cross-sectional study was carried out at the National Brain Center Hospital Prof. Dr. dr. Mahar Mardjono, Jakarta, Indonesia, between 1 October 2023, and 31 March 2024, using medical records of hospitalized first-ever ischemic stroke patients who underwent a complete blood count within 24 h of admission. Based on complete blood count-derived inflammatory biomarkers, this study included absolute numbers and related ratios or indices. Results: In total, 163 patients met the study criteria. The diagnosis of infection after AIS was established using reliable clinical symptoms and/or guidelines of the disease. According to the status of infection after AIS, the subjects were categorized into two groups, including 24 patients in the infection group and 139 patients in the non-infection group. Biomarkers that had significant accuracy (higher sensitivity and specificity, respectively) in predicting infection were the leukocyte count (LC; 70.8%, 74.1%, p < 0.001), absolute neutrophil count (ANC; 66.7%, 79.9%, p < 0.001), absolute monocyte count (AMC; 75.0%, 63.3%, p = 0.001), neutrophil to lymphocyte ratio (NLR; 62.5%, 71.9%, p = 0.003), derivative NLR (dNLR; 50.0%, 78.4%, p = 0.003), monocyte-granulocyte to lymphocyte ratio (MGLR; 62.5%, 73.0%, p = 0.003), systemic inflammatory response index (SIRI; 62.5%, 79.0%, p = 0.001), and systemic immune inflammation index (SII; 87.5%, 44.0%, p = 0.012) with chances of 74.4%, 75.4%, 71.0%, 69.0%, 68.7%, 69.3%, 73.4%, and 66.2%, respectively. Conclusions: Considering the overall ROC curve used to evaluate the complete blood count-derived inflammatory biomarkers, ANC has a better ability to predict infection in AIS patients, as denoted by the highest AUC, suggesting a 75.4% chance of correctly discriminating patients with infection after stroke.

Sex Differences in Nonadherence to Secondary Stroke Prevention Medications Among Patients With First-Ever Ischemic Stroke.

More women than men experience recurrent strokes. Medication adherence is critical to prevent recurrence; however, studies investigating sex differences are limited. We examined sex differences in poststroke medication adherence, overall and by drug class, and identified influencing factors. Patients with first-ever ischemic stroke were identified from a population-based study (2008-2019). At 90 days after a stroke, self-reported medication adherence was defined as never or rarely missing a dose in a typical week for each secondary stroke prevention medication (antihypertensives, cholesterol-lowering drugs, antiplatelets, anticoagulants). We generated prevalence ratios (PRs) using modified Poisson models to assess sex differences with and without adjustment for potential confounding factors, including demographics, social factors, health system-related, lifestyle-related, health condition-related, prestrokehealth-related, and stroke-related factors. Among 1324 participants (48.4% women, 58.0% Mexican American individuals), women were more likely to report nonadherence to cholesterol-lowering drugs (PR, 1.80 [95% CI, 1.14-2.84]) and antiplatelets (PR, 1.53 [95% CI, 1.003-2.34]). Adjusting for obesity attenuated while adjusting for age, marital status, access to care, smoking, and alcohol consumption accentuated sex differences. Race and ethnicity modified the sex difference in nonadherence to cholesterol-lowering drugs (Pinteraction=0.054) such that the sex difference was larger in Mexican American individuals (PR, 3.00 [95% CI, 1.65-5.48]) than in non-Hispanic White individuals (PR, 1.30 [95% CI, 0.52-3.27). No significant sex differences were found for nonadherence to antihypertensives and overall nonadherence. Poststroke medication nonadherence was more prevalent among women than men. This was partially due to the confounding effects of lifestyle, marital status, and access to care, suggesting potential subgroups for interventions to improve adherence.