Search Results for: Stroke

Objective
This study investigates the effects of dexmedetomidine on short-term and long-term survival rates in intensive care unit (ICU) patients with ischaemic stroke.

Design
This is a retrospective study.

Setting
Data were sourced from the Medical Information Mart for Intensive Care IV database.

Participants
This study analysed 2816 patients with ischaemic stroke from the US Intensive Care database.

Interventions
Dexmedetomidine administration during the ICU stay was defined as the exposure.

Methods
Patients were categorised into the dexmedetomidine group and the control group. Cox regression analysis was used to identify factors that may influence the 28-day mortality rate of patients with ischaemic stroke. High-risk factors were incorporated as covariates, and a 1:1 propensity score matching using the logit model was constructed to compare the prognosis between the two groups.

Primary and secondary outcome measures
The primary outcome was 28-day mortality. The secondary outcomes included in-hospital mortality, ICU length of stay, hospital length of stay, mechanical ventilation duration and 180-day mortality in discharged patients.

Results
A total of 2816 patients were included. Cox regression analysis revealed that dexmedetomidine use was associated with a reduced risk of 28-day mortality. Following propensity score matching, each group comprised 407 patients. Dexmedetomidine was found to improve 28-day mortality (27.8% vs 36.6%, p=0.007). However, it was also associated with the prolonged length of hospital and ICU stay (p=0.002). Among discharged patients, dexmedetomidine use was also associated with an improved 180-day mortality rate (p=0.0019).

Conclusion
The use of dexmedetomidine is associated with improved short-term and long-term prognosis in patients with ischaemic stroke and could potentially confer benefits in those receiving mechanical ventilation.

New England Journal of Medicine, Ahead of Print.

Stroke, Ahead of Print. BACKGROUND:Intravenous antihypertensives are frequently used to control blood pressure after successful endovascular thrombectomy (EVT), yet studies investigating the relationship between intravenous antihypertensive use and functional outcomes after successful EVT remain limited.METHODS:We conducted an exploratory secondary analysis of the OPTIMAL-BP trial (Outcome in Patients Treated With Intra-Arterial Thrombectomy–Optimal Blood Pressure Control), which compared intensive (systolic blood pressure

The stacked ML model incorporating TyG-BMI effectively predicts stroke risk, with the ISS score demonstrating strong performance across diverse populations. Further research is needed to assess its applicability in broader cohorts.

Objectives
The inflammatory response from acute infection may trigger cardiovascular events. We aimed to estimate associations between microbiologically confirmed urinary tract infections (UTIs) and first acute myocardial infarction (MI) and stroke.

Design
We used a self-controlled case series, with risk periods 1–7, 8–14, 15–28 and 29–90 days after UTI. Included individuals experienced the outcome and exposure of interest and acted as their own controls.

Setting
We used individually linked general practice, hospital admission and microbiology data for the population of Wales held by the Secure Anonymised Information Linkage databank.

Participants
Included individuals were Welsh residents aged over 30 years with a record of a hospital admission for MI or stroke (outcomes) and evidence of a microbiologically confirmed UTI (exposure) during the study period of 1 January 2010 to 31 December 2020.

Main outcome measures
The primary outcome was acute MI or stroke identified using the International Classification of Disease V.10 codes from inpatient diagnoses recorded in the Patient Episode Database for Wales. We used Poisson regression to estimate incidence rate ratios (IRRs) and 95% CIs for MI and stroke during predefined risk periods, compared with baseline periods.

Results
During the study period, 51 660 individuals had a hospital admission for MI, of whom 2320 (4.5%) had 3900 microbiologically confirmed UTIs, and 58 150 had a hospital admission for stroke, of whom 2840 (4.9%) had 4600 microbiologically confirmed UTIs. There were 120 MIs during risk periods and 2190 during baseline periods, with an increased risk of MI for 1–7 days following UTI (IRR 2.49, 95% CI (1.65 to 3.77)). There were 200 strokes during risk periods and 2640 during baseline periods, with an increased risk of stroke for 1–7 days following UTI (IRR 2.34, 95% CI (1.61 to 3.40)).

Conclusions
UTI may be a trigger for MI or stroke. Further work is needed to understand mechanisms and test interventions to reduce the risk of cardiovascular events among people with UTIs in primary care.

Objective
Understanding how patients access and experience long-term care after stroke, including the kind of medical support desired, in a qualitative interview study; analysis with a question-focused approach adapted from grounded theory methodology.

Setting
Recruitment in primary care and physical therapy practices in the metropolitan area of Berlin, Germany.

Participants
15 patients treated in general practice or physical therapy, whose last stroke occurred more than 2 years ago.

Results
‘Shaping relationships’ was the core category extracted from the data as a necessary component to receive appropriate long-term care after stroke. Care is embedded in relationships that must be managed primarily by the study participants and their proxies in the German setting. Study participants used different strategies to shape care relationships. This process is helped or hindered by healthcare institutions. Compared with concepts of patient-centred care, patients play a more active role in shaping relationships. To improve long-term care for chronic diseases, this needs to be taken into account.

Conclusion
Shaping relationships is a composite skill that includes engaging in and sustaining relationships, finding and using information and communication. This skill is essential for adequate long-term care after stroke.

Stroke, Ahead of Print. BACKGROUND:As indications for and utilization of mechanical thrombectomy continue to expand, there has been an increasing focus on developing improved tools for functional outcome prediction. We aim to evaluate the reliability of utilizing the areas of contrast staining for the Alberta Stroke Program Early Computed Tomography Score (s-ASPECTS) rating in immediate postthrombectomy flat-panel computed tomography and investigate its outcome predictive performance.METHODS:Retrospective analysis of a prospectively collected institutional mechanical thrombectomy database spanning March 2018 to February 2024. s-ASPECTS was calculated. We used ordinal logistic regression models to estimate the relationship between s-ASPECTS and the 90-day modified Rankin Scale and the additional value of these findings to the linear predictor of the MR-PREDICTS tool.RESULTS:One thousand sixty-three patients were included in this study with a mean age of 65±15 years, with 53% being male. s-ASPECTS was independently associated with functional outcomes. s-ASPECTS was observed to have more relevance in the clinical predictive model compared with baseline Alberta Stroke Program Early Computed Tomography Score, as well as to occlusion site and final expanded Thrombolysis in Cerebral Infarction grade. s-ASPECTS was lower among patients with more proximal occlusions, with a lower degree of final reperfusion, with a higher number of passes and longer procedures. The information gathered from flat-panel computed tomography added 18% of new information to MR-PREDICTS, as assessed by the ratio of the variances of the estimated probabilities of good functional outcome with an interobserver consensus score of κ=0.63.CONCLUSIONS:s-ASPECTS was reliably reported and found to be a stronger predictor of outcome compared with baseline Alberta Stroke Program Early Computed Tomography Score, characterizing it as an important prognostic tool for evaluating functional outcomes of patients following mechanical thrombectomy. Further studies are warranted.

Introduction
Direct oral anticoagulants (DOACs) are preferred over vitamin K antagonists for stroke prophylaxis in non-valvular atrial fibrillation. Yet, DOAC use is regarded as a contraindication for intravenous thrombolysis in acute ischaemic stroke. The stratification of patients into ‘on-therapy’ and ‘off-therapy’ categories based on their plasma DOAC concentrations is particularly crucial in the acute phase of stroke when decisions for thrombolysis or anticoagulation reversal are time-sensitive. The novel point-of-care DOAC dipstick assay (DOASENSE) rapidly assesses urine for clinically significant DOAC levels, potentially broadening eligibility for thrombolysis or targeted reversal therapy. This multicentre prospective observational registry study aims to evaluate the accuracy and clinical utility of DOAC dipstick testing compared with plasma DOAC assays in acute stroke management across regional Australian hospitals.

Methods and analysis
This multicentre, prospective, observational study will enrol participants presenting to hospitals across Victoria and Tasmania with acute ischaemic stroke or intracerebral haemorrhage with DOAC ingestion within 48 hours of presentation. Plasma DOAC concentrations measured by chromogenic assays will be compared with rapid urine dipstick results from DOASENSE testing. There is a target sample size of 146 participants. The primary outcomes are as follows: (1) proportion of ischaemic stroke participants with off-therapy plasma DOAC levels and (2) eligibility for reperfusion therapy based on DOASENSE and plasma DOAC concentrations. Secondary outcomes are follows: (1) ischaemic stroke aetiology for participants with on-therapy vs off-therapy DOAC levels; (2) proportion of participants meeting criteria for pharmacological DOAC reversal based on DOASENSE outcomes; (3) incidence of false-negative and false positive DOASENSE results in clinically significant DOAC plasma concentrations at a threshold of ≥30 ng/mL and (4) an exploratory analysis of any false negative DOASENSE assays to identify potential contributing factors.

Ethics and dissemination
Ethics approval has been granted by the Eastern Health Human Research Ethics Committee (reference number: 99628). Dissemination of findings will occur through peer-reviewed publications and academic conferences.

Stroke, Ahead of Print. BACKGROUND:The impact of covert cerebrovascular disease on falls in the general population is not well-known. Here, we determine the time to a first fall following incidentally detected covert cerebrovascular disease during a clinical neuroimaging episode.METHODS:This longitudinal cohort study assessed computed tomography (CT) and magnetic resonance imaging from 2009 to 2019 of patients aged >50 years registered with Kaiser Permanente Southern California which is a healthcare organization combining health plan coverage with coordinated medical services, excluding those with before stroke/dementia. We extracted evidence of incidental covert brain infarcts (CBI) and white matter hyperintensities/hypoattenuation (WMH) from imaging reports using natural language processing. We examined associations of CBI and WMH with falls requiring medical attention, using Cox proportional hazards regression models with adjustment for 12 variables including age, sex, ethnicity multimorbidity, polypharmacy, and incontinence.RESULTS:We assessed 241 050 patients, mean age 64.9 (SD, 10.42) years, 61.3% female, detecting covert cerebrovascular disease in 31.1% over a mean follow-up duration of 3.04 years. A recorded fall occurred in 21.2% (51 239/241 050) during follow-up. On CT, single fall incidence rate/1000 person-years (p-y) was highest in individuals with both CBI and WMH on CT (129.3 falls/1000 p-y [95% CI, 123.4–135.5]), followed by WMH (109.9 falls/1000 p-y [108.0–111.9]). On magnetic resonance imaging, the incidence rate was the highest with both CBI and WMH (76.3 falls/1000 p-y [95% CI, 69.7–83.2]), followed by CBI (71.4 falls/1000 p-y [95% CI, 65.9–77.2]). The adjusted hazard ratio for single index fall in individuals with CBI on CT was 1.13 (95% CI, 1.09–1.17); versus magnetic resonance imaging 1.17 (95% CI, 1.08–1.27). On CT, the risk for single index fall incrementally increased for mild (1.37 [95% CI, 1.32–1.43]), moderate (1.57 [95% CI, 1.48–1.67]), or severe WMH (1.57 [95% CI, 1.45–1.70]). On magnetic resonance imaging, index fall risk similarly increased with increasing WMH severity: mild (1.11 [95% CI, 1.07–1.17]), moderate (1.21 [95% CI, 1.13–1.28]), and severe WMH (1.34 [95% CI, 1.22–1.46]).CONCLUSIONS:In a large population with neuroimaging, CBI and WMH are independently associated with greater risks of an index fall. Increasing severities of WMH are associated incrementally with fall risk across imaging modalities.

Objectives
Providing information about the process of poststroke recovery, and individuals’ likely outlook can be challenging for professionals, which may lead to avoidance of this important issue, leaving patients’ and carers’ needs unmet in relation to understanding their recovery. We aimed to understand professionals’ experiences and views of providing information about recovery in stroke units.

Design
Semistructured interviews were conducted as part of a wider ethnographic case study. A Framework approach to analysis was employed.

Setting
Two UK stroke units.

Participants
19 qualified stroke unit professionals with a range of experience levels participated, including doctors, physiotherapists, occupational therapists, speech and language therapists and a nurse.

Results
Three themes and seven subthemes were generated. Participants across disciplines perceived that discussing recovery could have important benefits, although many lacked guidance about their roles in this domain. Skills in predicting recovery and sharing these predictions were learnt experientially, and therapists reported a lack of preparatory training and confidence, resulting in perceptions of mixed experiences for patients. Many professionals were worried about the consequences of sharing personalised predictions, including the impact on patients’ hope and motivation, and their ability to manage patients’ and families’ emotional responses. These concerns could result in professionals experiencing negative psychological consequences, for which limited formal support was available.

Conclusions
Stroke unit professionals perceive that providing information about recovery, including individualised predictions, to patients and carers has important benefits; however, they require additional guidance, support and training to confidently engage in this important area of clinical practice.

Stroke, Ahead of Print. BACKGROUND:National studies on reversible cerebral vasoconstriction syndrome (RCVS) point to differences between Asian and European patients. We investigated geographic variations in neurological complications, outcomes, and causes.METHODS:We conducted an exploratory analysis of pooled individual patient data from the Reversible Cerebral Vasoconstriction Syndrome International Collaborative network, a multicenter observational cohort study including patients with definite RCVS from 2 French, 32 Italian, 1 South Korean, and 1 Taiwanese centers. Data on demographics, precipitants, symptoms, imaging, treatment, and outcomes were collected. The primary end point was RCVS-associated brain lesions, including ischemic stroke, cortical subarachnoid hemorrhage, intracerebral hemorrhage, posterior reversible encephalopathy syndrome, and subdural hematoma. Secondary end points included unfavorable 3-month outcomes (modified Rankin Scale score ≥1) and causes (idiopathic versus secondary). Odds ratios and 95% CIs were calculated using multivariable logistic regression, adjusting for potential confounders.RESULTS:From 2009 to 2021, we included 1127 patients (528 European and 599 Asian). Recruitment occurred either through emergency settings or outpatient clinics, with most Asian patients recruited from outpatient clinics (65.8%) and most European patients from emergency settings (99.8%). Brain lesions were more frequent in European patients (29.2% versus 6.3%; odds ratio, 4.09 [95% CI, 2.66–6.30]). In a sensitivity analysis restricted to hospitalized patients (n=651), the association persisted. Unfavorable 3-month outcomes (5.5% versus 1.7%; odds ratio, 3.01 [95% CI, 1.35–6.68]) and secondary RCVS (50.4% versus 10.9%; odds ratio, 7.09 [95% CI, 5.14–9.76]) were also associated with European residency.CONCLUSIONS:RCVS presentations vary across regions, with higher lesion rates, more secondary forms, and worse outcomes in European patients. While these exploratory results may reflect selection bias from differing health care structures, further research is needed to determine the contribution of genetic, environmental, and societal factors.

Stroke, Ahead of Print. BACKGROUND:Familial hypercholesterolemia (FH) is characterized by elevated levels of LDL-C (low-density lipoprotein cholesterol) since birth. However, the association between FH and cerebrovascular diseases, including cerebral small vessel disease (CSVD), is controversial. To investigate the association between FH and CSVD, we compared the prevalence and severity of CSVD neuroradiological findings between patients with FH and control participants.METHODS:Patients with FH who visited the lipid clinic and underwent brain magnetic resonance imaging at the National Cerebral and Cardiovascular Center in Japan from November 2006 to April 2021 and control participants who voluntarily underwent brain magnetic resonance imaging as a checkup between December 2000 and December 2010 at the Health Science Center Shimane, Japan, were enrolled into the study. The prevalence and severity of CSVD neuroradiological findings were investigated in patients with FH and control participants, and potential risk factors for CSVD development were identified using multivariable logistic and quasi-Poisson regression analyses.RESULTS:A total of 151 patients with FH and 3172 control participants were enrolled in this study. FH was identified as an independent risk factor of prevalent lacunes (adjusted odds ratio, 1.60 [95% CI, 1.03–2.51];P=0.039) and increased number of lacunes (1.67 times [95% CI, 1.17–2.31];P=0.003). Furthermore, FH was also an independent risk factor of prevalent cerebral microbleeds (adjusted odds ratio, 9.42 [95% CI, 5.81–15.28];P

Stroke, Ahead of Print. Recently, 6 randomized controlled trials of endovascular treatment (EVT) versus medical management in anterior circulation large vessel occlusion with large-core documented significant benefit of EVT on functional outcome. Moreover, one trial reported the benefit of EVT in the large-core category (Alberta Stroke Program Early Computed Tomography Score, 0–2). These results are considered paradoxical by some as they contradict the prevailing view that the presence of a large core precludes the possibility of good outcomes following reperfusion. They, in turn, led some investigators to question the applicability of the core/penumbra model in the case of large-core stroke and even its overall validity, specifically regarding the notion that the core reliably predicts tissue infarction. Here, we discuss the trial results and propose alternative explanations for the large-core paradox. First, although EVT does improve outcomes as compared with medical management, overall outcomes remain poor in ≈80% of the treated population. Second, the assessment of core extent on imaging, particularly with computed tomography, is potentially inaccurate, especially in the early time window. Third, consistent with observational studies, some randomized controlled trial substudies suggest that the benefit of EVT in this population derives at least in part from the salvage of penumbra, which appears to have been present in a large percentage of enrolled patients. Fourth, the markedly reduced perfusion that prevails within large cores facilitates the early development of vasogenic edema. This heterogeneity of tissue injury may, in turn, lead to an overestimation of true core/neuronal death as estimated with computed tomography and magnetic resonance imaging. Assessing patients with apparent large core should consider these notions when discussing eligibility for EVT. Early reperfusion of large-core patients is expected to both target any residual penumbra and prevent the development of vasogenic edema within the severely hypoperfused areas. These considerations underscore the need for more reliable methods to identify irreversible neuronal injury inside the imaging-based estimated core.

Stroke, Ahead of Print. BACKGROUND:We investigated the relationship between white matter hyperintensity (WMH) multispot pattern lesions, a supporting magnetic resonance imaging marker of cerebral amyloid angiopathy (CAA), and positron emission tomography–based amyloid-β burden across a range of cerebrovascular amyloid deposition.METHODS:Twenty-one nondemented subjects (11 patients with probable CAA; median age, 71 [63–77] years; 82% males; and 10 healthy subjects; median age, 63.5 [61–68] years; 50% males) underwent brain magnetic resonance imaging and 11C-Pittsburgh compound B-positron emission tomography imaging. WMH multispot lesions were evaluated on FLAIR sequences. The association between whole cortex 11C-Pittsburgh compound B binding and WMH multispot lesions count was assessed using Kendall tau, adjusting for key markers of CAA through a hierarchical residualization approach.RESULTS:The unadjusted analysis showed a positive correlation between WMH multispot lesions count and whole cortex 11C-Pittsburgh compound B binding (tau-b=0.495;P=0.0017). Sequential adjustments for the presence of severe magnetic resonance imaging-visible perivascular spaces in the centrum semiovale, lobar cerebral microbleeds, age, and total WMH burden led to a progressive decline in correlation. The largest reduction occurred after adjusting for age (tau-b=0.307;P=0.0484) indicating its role as a potential confounder. In the fully adjusted model, the association remained significant (tau-b=0.316;P=0.0423), suggesting a partially independent relationship between WMH multispot lesions count and whole cortex amyloid burden. The results were consistent in a subanalysis within the probable CAA.CONCLUSIONS:This pilot study suggests a positive association between cerebrovascular amyloid deposition and WMH multispot lesions in CAA, with potential pathophysiological and clinical implications. These exploratory observations require confirmation in larger studies.

Stroke, Ahead of Print. BACKGROUND:Studies evaluating health system factors associated with major adverse cardiovascular events (MACE) among intracerebral hemorrhage (ICH) survivors are lacking. We evaluate differences in MACE incidence across postacute ICH care settings—inpatient rehabilitation facilities (IRF), home, or skilled nursing facilities (SNF).METHODS:Using data from Florida, New York, Maryland, Washington, and Georgia, we identified adult ICH survivors discharged to home, IRF, or SNF (April 2016–December 2018). Multivariable logistic models, adjusted for sociodemographic factors, treatment intensity, comorbidities, and frailty, estimated adjusted odds ratios (aORs) and 95% CIs for the association between discharge disposition (IRF versus home; IRF versus SNF) and MACE (a composite of acute stroke, acute myocardial infarction, systemic embolism, and vascular death), recurrent ICH, acute ischemic stroke, acute myocardial infarction, vascular death, and all-cause mortality within 1 year. Cardiovascular outcomes were ascertained usingInternational Classification of Diseases, Tenth Revisioncodes. We assessed age-discharge disposition interaction, performing stratified analyses for patients

In a population-based study, the incidence of stroke was higher among Down syndrome patients than among controls.