Pre-hospital delay and its associated factors in first-ever stroke registered in communities from three cities in China

Factors Associated With Prehospital Delay in Acute Ischemic Stroke: A Comparative Study of First-Time and Recurrent Cases

BACKGROUND

Prehospital delay, defined as prehospital time (from symptom onset to hospital arrival) ≥3 hours, adversely affects outcomes in patients with acute ischemic stroke. It is prevalent both among patients with first-time and recurrent stroke, who differ in disease and psychological characteristics affecting their health-seeking behavior. However, comparative studies on delay-related factors between these groups are limited.

OBJECTIVES

We aimed to identify and compare factors influencing prehospital delay among patients with first-time and recurrent acute ischemic stroke.

METHODS

This 2-center, hospital-based, cross-sectional study enrolled 144 first-time and 142 recurrent patients with acute ischemic stroke in Guangzhou, China. Patients' prehospital times were recorded. Standardized questionnaires were used to assess stroke knowledge, family function, and stigma. Data were analyzed using univariate analysis and multiple logistic regression.

RESULTS

Emergency medical services utilization reduced prehospital delay in both groups (first-time: odds ratio [OR] = 0.173, 95% CI: 0.040-0.750; recurrent: OR = 0.100, 95% CI: 0.022-0.466). Poor family function increased the risk of delay (first-time: OR = 1.057, 95% CI: 1.003-1.113; recurrent: OR = 1.131, 95% CI: 1.039-1.230). Among patients with recurrent stroke, greater stroke knowledge was protective (OR = 0.983, 95% CI: 0.968-0.999), while higher stigma increased delay (OR = 1.053, 95% CI: 1.012-1.095).

CONCLUSIONS

Emergency medical services utilization and strong family function reduce prehospital delay in both patients with first-time and recurrent stroke, while increased stroke knowledge and reduced stigma specifically benefit patients with recurrent stroke. Targeted strategies addressing these factors are recommended.

Current Snapshots on Stroke Prevention and Control and More Proactive National Strategies Against It in China

Background and Purpose

Stroke has become a major public health problem. This paper aims to briefly review the current epidemiological characteristics, preliminary achievements, and national action strategies related to stroke prevention and control in China.

Methods

English and Chinese literature were searched on stroke epidemiological characteristics and more proactive strategies for its prevention and control in China. Potential papers related to this topic were identified from PubMed, Medline, Embase, Cochrane Library, Wanfang Database, SINOMED, and China National Knowledge Infrastructure databases, as well as the annual reports and websites of the People's Daily, the State Council, and the National Health Commission of the People's Republic of China.

Results

Stroke has been ranked among the top three causes of death in China, and has become a public health problem endangering people's health. High rates of incidence, mortality, and disability bring a heavy burden to stroke patients, families, and society. With China's economic development, urbanization, and population aging, the prevalence and incidence of stroke are still rising. Although some progress has been made in specialized stroke prevention and treatment in China, there is still much room for improvement. Curbing increasing stroke due to increased prevalence and suboptimal control of risk factors and unhealthy lifestyles is no longer just the efforts of medical service institutions. It still requires a more proactive national strategy and general mobilization of the whole people. Increased prevalence of stroke, survivors' unfavorable outcomes, and suboptimal rehabilitation also need specialized stroke care and the perfect Hierarchical Medical System within the regional medical consortium in China.

Conclusions

The current situation of stroke prevention and treatment is still very serious in China. In the future, the stroke prevention and treatment model will change from passive stroke treatment and risk factor control to a more proactive prevention model of health factor management.

Pre-hospital delay intention and its associated factors in the high-risk population of stroke: a latent profile analysis

AIMS

To explore the possible latent classifications of pre-hospital delayed intention at high risk of stroke and to analyse the characteristics of different profiles.

METHODS AND RESULTS

A cross-sectional study was conducted in one community in Shanghai, China. Four hundred and seventy individuals at high risk of stroke were recruited, and self-reported questionnaires (including socio-demographic, stroke knowledge, health belief, and pre-hospital delay behaviour intention scale) were distributed between April and June 2023. A latent profile analysis was employed to identify the delay intention clusters, and multinomial logistic regression was utilized to ascertain the factors influencing the latent classes of delay intention. Four hundred and fifty-seven high-risk populations with a response rate of 97.23% were finally enrolled in this study. Four distinct classes were identified: high warning signs-low delay intention (26.3%), low warning signs-low delay intention (17.7%), moderate level of delay intention (37.3%), and high level of delay intention (18.7%). The influencing factors included stroke knowledge, health belief, age, education background, the nearest distance to the medical institution, and household income.

CONCLUSION

The pre-hospital delay intention among high-risk populations of stroke was classified into four distinct classes. It is crucial for individuals at high risk to remain vigilant towards stroke symptoms and to take prompt action. Health promotion education may be explored as a strategy to bridge the gap between the recognition of stroke symptoms and the low pre-hospital delay intention.

Association between serum A/G ratio and stroke: data from NHANES 2009-2020

Background

The serum albumin-to-globulin ratio (A/G) has been widely used as a biomarker to assess inflammation, immunity, and nutritional status. However, relatively few studies have been conducted on the predictive value of serum A/G in stroke. Therefore, this study aimed to evaluate the correlation between serum A/G levels and stroke prognosis, to provide a new reference for risk assessment and management of stroke patients.

Methods

Data were sourced from the National Health and Nutrition Examination Survey (NHANES) for 2009-2020. The study utilized questionnaire responses and 24-h dietary recall interviews. Participants were stratified by serum albumin/globulin (A/G) ratios into tertiles. Multivariable logistic regression, curve fitting, subgroup analyses, and interaction tests were conducted to assess the associations with serum A/G ratios.

Results

Of the 82,298 participants initially considered, 52,119 had complete data and no history of stroke, albumin, or globulin deficiency, which were included in the analysis. We observed a decrease in stroke incidence with increasing A/G ratios. Higher A/G ratios were also associated with lower incidences of moderate exercise, diabetes, and coronary heart disease. The relationship between A/G ratios and stroke was moderated by covariates such as gender, hypertension, diabetes, smoking, and body mass index.

Conclusion

In the US population, serum A/G ratios positively correlate with stroke incidence. Serum A/G could be a simple and economical marker for identifying stroke risk in the population, though further prospective studies are required to validate these findings.

Cell-Free Nucleic Acids for Early Diagnosis of Acute Ischemic Stroke: A Systematic Review and Meta-Analysis

Rapid identification of acute ischemic stroke (AIS) is challenging in both pre-hospital and hospital settings. We aimed to identify the most promising cell-free nucleic acids (cfNAs) as diagnostic biomarkers for IS within 72 h from symptom onset. We searched PubMed, Web of Science, EMBASE, and Cochrane Library for published articles that evaluated blood cfNAs in the early diagnosis of AIS until 10 May 2023. The diagnostic performances of individual cfNAs were pooled by random-effects meta-analysis based on the fold change of biomarkers' level between AIS and non-AIS patients. Of 2955 records, 66 articles reporting 143 different cfNAs met the inclusion criteria. The median sample size was 110, and 21.4% of the studies performed validation. Among selected high-quality studies, miR-106b-5p, miR-124, miR-155, lncRNA H19, and cfDNA showed good diagnostic performance. Data from four studies on cfDNA involving 355 AIS patients and 97 controls were pooled in the meta-analysis, which showed a significant fold change between AIS and controls (pooled ratio 1.48, 95% confidence interval 1.23-1.79, p < 0.001). This review highlights that cfDNA, miR-106b-5p, miR-124, miR-155, and lncRNA H19 are the most promising biomarkers for AIS diagnosis, and further research is needed for verification.

Healthcare-seeking delays and associated factors among immigrant patients with acute ischaemic stroke in Shenzhen: a retrospective observational study

OBJECTIVE

To examine healthcare-seeking delays among immigrant patients with acute ischaemic stroke (AIS), identifying key factors contributing to these delays and proposing evidence-based interventions for policy formulation and research.

DESIGN

A retrospective observational study analysing healthcare-seeking behaviours and delay times among immigrant patients with AIS treated at the Department of Neurology, Longhua District People's Hospital, Shenzhen, from December 2021 to October 2023. The study included 1356 patients with AIS, all part of the immigrant population as defined by Shenzhen Statistical Yearbook criteria. The study investigated sociodemographic, clinical data and stroke-specific scales (modified Rankin Scale, National Institutes of Health Stroke Scale, Glasgow Coma Scale) to identify factors influencing delays.

SETTING

The study was conducted in Shenzhen, a city characterised by a significant immigrant population, providing insights applicable to urban regions with similar demographics.

RESULTS

Of the 1356 patients studied, 82.6% (n=1120) experienced healthcare-seeking delays, with a median delay of 12.67 hours (IQR: 3.5-28.8). Factors associated with prolonged delays included lack of stroke awareness (92.96% delay rate), low educational attainment, self-transportation to the hospital (adjusted OR (aOR): 2.36, 95% CI: 1.57 to 3.54) and wake-up strokes (aOR: 4.37, 95% CI: 2.28 to 8.36). Conversely, factors associated with shorter delays included cardioembolic strokes (aOR: 0.50, 95% CI: 0.28 to 0.90) and atrial fibrillation (aOR: 0.45, 95% CI: 0.23 to 0.89). Delay rates were significantly lower among patients referred by emergency medical services compared with those self-transporting. These findings highlight the influence of clinical, socioeconomic and demographic factors on delays in seeking care.

CONCLUSION

Healthcare-seeking delays in stroke care among immigrants, shaped by awareness, socioeconomic and clinical factors, necessitate urgent educational, policy and healthcare reforms. Enhancing early symptom recognition and promoting emergency service utilisation are essential for improving access to care and outcomes in this vulnerable group.

Factors Associated With Delayed Hospital Arrival After Stroke Onset: An Observational Study in Thanh Hoa Province, Vietnam

BACKGROUND

Delayed hospital arrival lowers the proportion of patients with stroke receiving recanalization therapy and results in poor outcomes. This study investigated the factors associated with pre-hospital delays in hospital arrival after stroke onset in the Thanh Hoa Province, Vietnam.

METHODS

Clinical data were collected from stroke patients within seven days of symptom onset who were prospectively registered in this study. Patients and their relatives were interviewed using a structured questionnaire about patient social demographics, address, post-stroke support actions, and stroke awareness. Pre-hospital delay in hospital arrival was dichotomized into ≤ 4.5 hours and > 4.5 hours, and multivariable logistic regression analysis was used to investigate factors associated with the delay.

RESULT

Of the 328 participants analyzed, 181 (55.4%) arrived at the hospital 4.5 hours after the symptom onset. The patients' and relatives' awareness of stroke was poor, with 298 (91.4%) who had never heard about signs of stroke onset, facial drooping, arm weakness, speech difficulties, and time to call emergency service (FAST). Pre-hospital delays were longer for patients living >10 km away from a healthcare facility and those with secondary or lower education levels, with odds ratios of 2.07 and 1.99, respectively. Seeking care at a district or private hospital as the first point of healthcare or non-use of emergency medical services did not show significant associations with odds ratio and 95% CI of 1.57 (0.93-2.65).

DISCUSSION

The study revealed that most patients with stroke did not arrive at the hospital in time for recanalization therapy. Moreover, the low stroke awareness among patients and their relatives is concerning. Further research is needed to investigate the reasons for pre-hospital delays and develop targeted interventions to improve stroke awareness and reduce these delays.

Ischemic core volumes and collateral status have diurnal fluctuations - A retrospective cohort study of 18,137 patients

INTRODUCTION

Recent observations suggest that circadian rhythms are implicated in the timing of stroke onset and the speed of infarct progression. We aimed to replicate these observations in a large, multi-center, automated imaging database.

METHODS

The RAPID Insights database was queried from 02/01/2016 to 01/31/2022 for patients with perfusion imaging and automated detection of an ischemic stroke due to a presumed large vessel occlusion. Exclusion criteria included: patient age ≤25, mismatch volume of <0 cc, and failure to register a positive value on either relative cerebral blood flow (rCBF) reduction of 38% less than normal or total mismatch volume. Imaging time was subdivided into three epochs: Night: 23:00h-06:59h and Day: 07:00h-14:59h, and Evening: 15:00h-22:59h. Perfusion parameters were defined using standard conventions for core volume, penumbra, and collateral circulation (measured via the Hypoperfusion Intensity Ratio, HIR). Statistical significance was tested using a sinusoidal regression analysis.

RESULTS

A total of 18,137 cases were analyzed. The peak incidence of stroke imaging of patients with LVOs occurred around noon. A sinusoidal pattern was present, with larger ischemic core volumes and higher HIR during the night compared to the day: peak ischemic core volume of 23.4 cc occurred with imaging performed at 3:56 AM (p<0.001) and peak HIR of 0.35 at 3:40 AM (p<0.001).

CONCLUSION

We found that ischemic core volumes were larger and collateral status worse at nighttime compared to daytime in this large national database. These findings support prior data suggesting that poor collateral recruitment with subsequent larger ischemic stroke volumes may occur at night.

Barriers to Effective Prehospital and Hyperacute Stroke Care in India: A Physician Perspective

Introduction

The incidence of stroke is increasing in India. Prehospital stroke care is crucial for reducing stroke morbidity and mortality, but its implementation in India faces several challenges. Limited original research exists on prehospital stroke care in India, making it essential to identify the problems in implementing effective prehospital stroke care.

Methods

A web-based survey was conducted among registered medical practitioners in India who treat acute stroke. The survey questionnaire was developed in English and included 26 questions divided into five parts: questions about the physician's practice setup/hospital in India, perception of community awareness, existing prehospital care/systems, in-hospital stroke care availability, and specific issues faced.

Results

Eighty-three doctors in India participated in the survey (43% response rate). Most of the respondents worked in private hospitals (68%) and urban areas (76%). While 89% of hospitals had ambulance services, over 33% reported that patients had to pay for ambulance transport. Among respondents, 12% reported a community stroke care network, with infrequent prehospital procedures such as random blood glucose measurement (22%), stroke identification (15.7%), "last seen normal" documentation (14.5%), and low prehospital notification to hospitals (5%). Delays in referral from peripheral centers were reported by 73% of respondents. Most hospitals had standard operating procedures (SOPs) (84%), computed tomography (CT) (94%), magnetic resonance imaging (MRI) (85%), and offered intravenous thrombolysis (IVT) (77%). However, 24 h availability of CT was reported only by 6%, MRI by 19% and IVT by 12%. Nearly half (45%) reported treatment with thrombolysis was not covered by insurance. Mechanical thrombectomy was available in 34% of hospitals and 63% of hospitals conducted in-hospital audits for stroke patients.

Conclusions

The capabilities of stroke-catering hospitals in urban settings are encouraging, with many having SOPs, imaging capabilities, and thrombolysis and mechanical thrombectomy services. However, there is much room for improvement, in making the essential stroke care services financially accessible to all and available around the clock.

Prevalence and influencing factors of patient delay in stroke patients: a systematic review and meta-analysis

PURPOSE

Determine the prevalence and influencing factors of patient delay in stroke patients and explore variation in prevalence by country and delayed time.

METHODS

PubMed, The Cochrane Library, Embase, Web of Science, China National Knowledge Infrastructure (CNKI), Chinese Biomedical Database (CBM), Weipu database, and Wanfang database were comprehensively searched for observational studies from inception to April, 2023. The pooled prevalence, odds ratio (OR), and 95% confidence intervals (CI) were calculated with Stata 16.0 software.

RESULTS

In total, 2721 articles were screened and data from 70 studies involving 85,468 subjects were used in meta-analysis. The pooled prevalence of patient delay in stroke patients was 59% (95% CI, 0.54-0.64). The estimates of pooled prevalence calculated for African, Asian, and European patient delay in stroke patients were 55% (0.29-0.81), 61% (0.56-0.66), and 49% (0.34-0.64).According to the patient delay time, the prevalence of 6 h, 5 h, 4.5 h, 3.5 h, 3 h and 2 h were 54% (0.47-0.61), 73% (0.61-0.86), 60% (0.49-0.71), 81% (0.68-0.93), 52% (0.42-0.62), 63% (0.19-1.07). Distance from the place of onset to the hospital > 10 km [OR=2.49, 95%CI (1.92, 3.24)], having medical insurance [OR = 0.45, 95%CI (0.26,0.80)], lack of stroke-related knowledge [OR = 1.56, 95%CI (1.08,2.26)], education level below junior high school [OR = 1.69, 95%CI (1.22,2.36)], non-emergency medical services (Non-EMS) [OR = 2.10, 95%CI (1.49,2.97)], living in rural areas [OR = 1.54, 95%CI (1.15,2.07)], disturbance of consciousness [OR = 0.60, 95%CI (0.39,0.93)], history of atrial fibrillation [OR = 0.53, 95%CI (0.47,0.59)], age ≥ 65 years [OR = 1.18, 95%CI (1.02,1.37)], National institutes of health stroke scale (NIHSS) ≤ 4 points [OR= 2.26, 95%CI (1.06,4.79)]were factors for patient delay in stroke patients.

CONCLUSIONS

The prevalence of patient delay in stroke patients is high, we should pay attention to the influencing factors of patient delay in stroke patients and provide a theoretical basis for shortening the treatment time of stroke patients.

Integrative Approaches in Acute Ischemic Stroke: From Symptom Recognition to Future Innovations

Among the high prevalence of cerebrovascular diseases nowadays, acute ischemic stroke stands out, representing a significant worldwide health issue with important socio-economic implications. Prompt diagnosis and intervention are important milestones for the management of this multifaceted pathology, making understanding the various stroke-onset symptoms crucial. A key role in acute ischemic stroke management is emphasizing the essential role of a multi-disciplinary team, therefore, increasing the efficiency of recognition and treatment. Neuroimaging and neuroradiology have evolved dramatically over the years, with multiple approaches that provide a higher understanding of the morphological aspects as well as timely recognition of cerebral artery occlusions for effective therapy planning. Regarding the treatment matter, the pharmacological approach, particularly fibrinolytic therapy, has its merits and challenges. Endovascular thrombectomy, a game-changer in stroke management, has witnessed significant advances, with technologies like stent retrievers and aspiration catheters playing pivotal roles. For select patients, combining pharmacological and endovascular strategies offers evidence-backed benefits. The aim of our comprehensive study on acute ischemic stroke is to efficiently compare the current therapies, recognize novel possibilities from the literature, and describe the state of the art in the interdisciplinary approach to acute ischemic stroke. As we aspire for holistic patient management, the emphasis is not just on medical intervention but also on physical therapy, mental health, and community engagement. The future holds promising innovations, with artificial intelligence poised to reshape stroke diagnostics and treatments. Bridging the gap between groundbreaking research and clinical practice remains a challenge, urging continuous collaboration and research.

Effects of emergency medical services on timely treatment and outcome in stroke patients with intravenous thrombolysis among the severity of neurologic deficits: A retrospective observational study

Whether emergency medical service (EMS) improves the outcome of acute ischemic stroke (AIS) patients after intravenous thrombolysis (IVT) is still unknown among the severity of neurologic deficits. This study is to investigate the impact of EMS use on timely treatment and outcomes of AIS with IVT. This is a retrospective observational study. Clinical data after IVT from January 2017 to May 2020 were retrospectively analyzed, including onset-to-needle time (ONT), onset-to-door time (ODT). The patients were divided into EMS and non-EMS groups according to the method of admission. A good outcome was defined as a modified Rankin scale score of ≤2 at 3 months. The severity of neurological deficits was assessed using the national institutes of health stroke scale. A total of 2303 patients were analyzed (906 [(39.3%] female; mean age, 68 ± 13 year), and 1028 (44.6%) patients were transported by EMS and 1418 (67.9%) patients achieved good outcome. Among all patients, compared with non-EMS patients, EMS patients had shorter ONT (148 minutes vs 155 minutes, P = .002) and ODT (95 minutes vs 104 minutes, P < .001), but lower rate of good outcome (61.7% vs 73.0%, P < .001). The multivariate analysis showed that the use of EMS was negatively associated with ONT (ρ = -0.041, P = .048) and ODT (ρ = -0.051, P = .014). Among moderate to severe stroke patients, EMS was related with good outcome independently (OR: 3.101, 95%CI: 1.367-7.038, P = .007). In ischemic stroke, EMS can shorten the pre-hospital delay. Among moderate to severe stroke patients, EMS can further improve the outcome. But the study needs further validation.

Factors Associated with Prehospital Delay in Patients with Acute Stroke in South India

Background

Early hospital presentation is critical in the management of acute ischemic stroke. The effectiveness of stroke treatment is highly dependent on the amount of time lapsed between onset of symptoms and treatment. This study was aimed to identify the factors associated with prehospital delay in patients with acute stroke.

Material and Methods

A cross-sectional descriptive study was conducted in Sri Ramachandra University Hospital, India. A total of 210 patients hospitalized in the stroke unit were included. Patients' data were obtained by interviewing the patient and/or accompanying family member and by reviewing their medical records using a standard questionnaire. Associations were determined between prehospital delay (≥4.5 h) and variables of interest by using univariate and multivariate logistic regression analyses.

Results

The prehospital delay was observed in 154 patients (73.3%) and the median prehospital delay was 11.30 h. The following are the factors significantly (P < 0.05) attributed for the delay in presenting to the hospital: contextual factors like using public transport (bus), taxi, time of onset of symptoms, 7 pm-3 am; family history of stroke, perceived cognitive and behavioral factors like, wishing or praying for the symptoms to subside on its own, hesitation to travel due to long distance, delay in arranging transport, and arranging money for admission and wasting time by shopping for general practitioners, nursing homes, and hospitals. The presence of stroke symptom, headache, significantly decreased the prehospital delay.

Conclusions

Prehospital delay is high in South India and influenced by clinical, contextual, and cognitive/behavioral factors.

Identification of high-risk factors for prehospital delay for patients with stroke using the risk matrix methods

Background

Stroke has become a leading cause of mortality and adult disability in China. The key to treating acute ischemic stroke (AIS) is to open the obstructed blood vessels as soon as possible and save the ischemic penumbra. However, the thrombolytic rate in China is only 2.5%. Research has been devoted to investigating the causes of prehospital delay, but the exact controllable risk factors for prehospital delay remain uncertain, and a consensus is lacking. We aimed to develop a risk assessment tool to identify the most critical risk factors for prehospital delay for AIS patients.

Methods

From November 2018 to July 2019, 450 patients with AIS were recruited. Both qualitative and quantitative data were collected. The Delphi technique was used to obtain expert opinions about the importance of the risk indices in two rounds of Delphi consultation. Then, we used the risk matrix to identify high-risk factors for prehospital delay for AIS patients.

Results

The risk matrix identified the following five critical risk factors that account for prehospital delay after AIS: living in a rural area; no bystanders when stroke occurs; patients and their families lacking an understanding of the urgency of stroke treatment; patients and their families not knowing that stroke requires thrombolysis or that there is a thrombolysis time window; and the patient self-medicating, unaware of the seriousness of the symptoms, and waiting for spontaneous remission.

Conclusions

The risk analysis tool used during this study may help prevent prehospital delays for patients with AIS.

Emergency medical service utilization among acute ischemic stroke patients in Beijing: An observational study

Objective

To investigate emergency medical service (EMS) utilization and its associated factors in patients with acute ischemic stroke (AIS), and further explore the urban-rural differences.

Methods

Medical records for AIS in all emergency departments in Beijing were obtained from the Beijing Emergency Care Database from January 2018 to December 2021. EMS utilization was described and factors associated with EMS use were examined by multivariable logistic regression models with the generalized estimating equations. Results were compared between urban and rural districts.

Results

A total of 24,296 AIS patients were included in the analysis, and 11,190 (46.1%) were transported to hospitals by EMS. The percentage of EMS usage in urban areas was significantly higher than that in rural areas (53.6 vs. 34.4%, P < 0.001). From 2018 to 2021, EMS utilization was on the increase (P-value for trend <0.001) with a higher average annual growth rate in rural areas (12.6%) than in urban (6.4%). Factors associated with EMS utilization were age (OR: 1.20 per 10-year increase, 95% CI: 1.17–1.23), NIHSS scores, off-hour arrival (OR: 1.32, 95% CI: 1.23–1.37), treatment in tertiary hospitals (OR: 1.75, 95% CI: 1.60–1.92), and possessing comorbidities such as coronary artery disease (OR: 1.15, 95% CI: 1.17–1.24), atrial fibrillation (OR: 1.56, 95% CI: 1.41–1.73), prior stroke (OR: 0.84, 95% CI: 0.78-0.90) or dyslipidemia (OR: 0.78, 95% CI: 0.71–0.85).

Conclusion

This study demonstrated an inadequate use of EMS among AIS patients in Beijing, especially in rural areas, and revealed several associated factors. Enhanced education programs and EMS accessibility are necessary particularly for high-risk individuals and regions.

Factors associated with delayed hospital presentation for patients with acute stroke in Makkah: A cross-sectional study

Despite the recent advancements in the treatment of acute ischemic stroke, the delayed patient arrival to emergency department or hospital serve as crucial factor for the selection of appropriate intervention program. This study was aimed to identify factors associated with late hospital arrival for patients with acute ischemic stroke in Makkah, Saudi Arabia. A prospective cross-sectional study was carried out at Al-Noor Specialist Hospital among 98 enrolled patients with the mean age of 60.4 ± 10.3 years over the period of March 2019 and June 2019. The data were collected through review of patient records and interview of patients and attendants. Fifty-four of these (55%) presented early (within 4.5 hours) and 44 (45%) presented late (after 4.5 hours). Factor associated with late arrival included low educational level (P = .01) and unemployment status (P = .033). The relationship between time of presentation and computed tomography findings showed statis,tically significant relationship between the former and early computed tomography findings (P = .017). A statistically significant relationship between time of presentation and knowledge of stroke was also observed (P = .013). Increased public awareness is important in order to minimize the time between stroke onset and emergency room presentation.

Developing a conceptual model for studying various points of delays and underlying factors in the emergency healthcare system

To review various literature related to emergency healthcarerelated delays and synthesize a conceptual framework for future research. Critical Interpretative Synthesis is employed to analyze and develop themes from selected articles. A total of 25 articles were selected for analysis after the careful selection process. Diseases including acute heart disease, stroke, pneumonia, infections, and gastrointestinal disorders were included. During analysis, three major phases of delays emerged: pre-hospital delay, inhospital delay, and ambulance off-load delay. Various factors, including socioeconomic factors, health system factors, organizational level factors, etc., are related to delays in emergency care settings. The model evolved from this literature analysis is similar to the 3 delays model. This review identified three significant delay segments related to emergency health care management.

Improving the Prehospital Identification and Acute Care of Acute Stroke Patients: A Quality Improvement Project

BACKGROUND

There are a large number of stroke patients in China, and there is currently a lack of prehospital acute stroke care training programs.

AIM

To develop a prehospital emergency medical service (PEMS) training program to improve the prehospital identification and acute care of acute stroke.

METHODS

Forty prehospital emergency doctors whose service stations are located within a 10 km radius from Shanghai Pudong New Area Medical Emergency Service Center took this course on November 13, 2014. A questionnaire was designed to evaluate the PEMS personnel's knowledge in stroke and acute stroke care and was conducted before and after training as an assessment of the effectiveness of training. The patient population in this study included a baseline cohort before training and a prospective cohort after training, each composed of patients who were sent to Shanghai East Hospital South Stoke Center within one year. The transit time, final diagnosis, administration of thrombolysis, and door-to-needle time (DNT) were collected and analyzed.

RESULTS

After the training, 100% of the PEMS personnel were competent to identify stroke cases using the Cincinnati prehospital stroke scale (CPSS). All participants realized that intravenous thrombolysis therapy in a time-sensitive manner is the most effective way to treat acute ischemic stroke. Although there was no difference in first-aid transit time before and after training, the stroke diagnosis rate improved by 6.5% after training (P=0.03). The thrombolysis rate increased to 29.6% from 24.3% but did not reach statistical significance. Compared to 84.0 minutes (standard deviation: 23.1 minutes) before the training, the average DNT after training was 53 minutes (standard deviation: 15.0 minutes), demonstrating a remarkable reduction (P < 0.01).

CONCLUSION

The training program effectively improved the PEMS personnel's knowledge in stroke and stroke acute care.

Perceptions of recurrence risk and behavioural changes among first-ever and recurrent stroke survivors: A qualitative analysis

Background

Among stroke survivors, the risk of stroke recurrence is high, and stroke survivors' perception of the risk of recurrence is crucial to promote healthy behaviours.

Objectives

This study aimed to explore the perceptions of stroke survivors about their risk of recurrence and healthy behavioural modifications.

Design

A qualitative interview study was carried out.

Results

We interviewed 19 stroke survivors from 3 hospitals. Thematic analysis showed that the perceptions of recurrence risk and healthy behavioural changes differed between first‐ever and recurrent stroke survivors. Three themes were generated from the data of first‐ever stroke survivors: indifference to and unawareness of the risk of stroke recurrence, the need for professional information support and different awareness of the importance of different healthy behaviours. For first‐relapse stroke patients: worry but feel powerlessness towards recurrent event, accurate information is still warranted, regret of unhealthy behaviour patterns. For the survivors suffered two or more times recurrences: perceived severity of recurrences, increased psychological care need, incorrect perceptions of healthy behaviour.

Discussion and Conclusion

Stroke survivors with or without recurrence hold different perceptions towards the risk of recurrence and behavioural changes. The need for information related to warning signs, recurrence risk and risk factors remained consistently unmet. The benefits of healthy behaviours could be a double‐edged sword for the prevention of stroke recurrence if the survivors fail to understand these accurately. It is strongly recommended that a specific recurrence risk communication tool and related health education plan be explored on the basis of the number of times patients have experienced stroke recurrence to inform secondary prevention of stroke in the future.

Patient/Public Contribution

The patients were involved in the formulation of interview questions and conduct of this study. No public was involved in this study.

Delayed Stroke Treatment during COVID-19 Pandemic in China

BACKGROUND

Social distance, quarantine, pathogen testing, and other preventive strategies implemented during CO-VID-19 pandemic may negatively influence the management of acute ischemic stroke (AIS).

OBJECTIVE

The current study aimed to evaluate the impacts of COVID-19 pandemic on treatment delay of AIS in China.

METHODS

This study included patients with AIS admitted in 2 hospitals in Jiangsu, China. Patients admitted before and after the COVID-19 pandemic outbreak (January 31, 2020, as officially announced by the Chinese government) were screened to collect sociodemographic data, medical history information, and symptom onset status from clinical medical records and compared for pre- (measured as onset-to-door time [ODT]) and posthospital delay (measured as door-to-needle time [DNT]). The influencing factors for delayed treatment (indicated as onset-to-needle time >4.5 h) were analyzed with multivariate logistic regression analysis.

RESULTS

A total of 252 patients were included, of which 153 (60.7%) were enrolled before and 99 (39.3%) after the COVID-19 pandemic. ODT increased from 202 min (interquartile range [IQR] 65-492) before to 317 min (IQR 75-790) after the COVID-19 pandemic (p = 0.001). DNT increased from 50 min (IQR 40-75) before to 65 min (IQR 48-84) after the COVID-19 pandemic (p = 0.048). The proportion of patients with intravenous thrombolysis in those with AIS was decreased significantly after the pandemic (15.4% vs. 20.1%; p = 0.030). Multivariate logistic regression analysis indicated that patients after COVID-19 pandemic, lower educational level, rural residency, mild symptoms, small artery occlusion, and transported by other means than ambulance were associated with delayed treatment.

CONCLUSIONS

COVID-19 pandemic has remarkable impacts on the management of AIS. Both pre- and posthospital delays were prolonged significantly, and proportion of patients arrived within the 4.5-h time window for intravenous thrombolysis treatment was decreased. Given that anti-COVID-19 measures are becoming medical routines, efforts are warranted to shorten the delay so that the outcomes of stroke could be improved.

Development and Validation of a LASSO Prediction Model for Better Identification of Ischemic Stroke: A Case-Control Study in China

Background

Timely diagnosis of ischemic stroke (IS) in the acute phase is extremely vital to achieve proper treatment and good prognosis. In this study, we developed a novel prediction model based on the easily obtained information at initial inspection to assist in the early identification of IS.

Methods

A total of 627 patients with IS and other intracranial hemorrhagic diseases from March 2017 to June 2018 were retrospectively enrolled in the derivation cohort. Based on their demographic information and initial laboratory examination results, the prediction model was constructed. The least absolute shrinkage and selection operator algorithm was used to select the important variables to form a laboratory panel. Combined with the demographic variables, multivariate logistic regression was performed for modeling, and the model was encapsulated within a visual and operable smartphone application. The performance of the model was evaluated on an independent validation cohort, formed by 304 prospectively enrolled patients from June 2018 to May 2019, by means of the area under the curve (AUC) and calibration.

Results

The prediction model showed good discrimination (AUC = 0.916, cut-off = 0.577), calibration, and clinical availability. The performance was reconfirmed in the more complex emergency department. It was encapsulated as the Stroke Diagnosis Aid app for smartphones. The user can obtain the identification result by entering the values of the variables in the graphical user interface of the application.

Conclusion

The prediction model based on laboratory and demographic variables could serve as a favorable supplementary tool to facilitate complex, time-critical acute stroke identification.

Staged Endovascular Treatment for Symptomatic Occlusion Originating From the Intracranial Vertebral Arteries in the Early Non-acute Stage

Background: The ideal treatment for patients who survive from acute vertebrobasilar artery occlusion but develop aggressive ischemic events despite maximal medical therapy in the early non-acute stage is unknown. This paper reports the technical feasibility and outcome of staged endovascular treatment in a series of such patients with symptomatic intracranial vertebral artery occlusion.

Methods: Ten consecutive patients who presented with aggressive ischemic events in the early non-acute stage of intracranial vertebral artery occlusion from Jan 2015 to Nov 2020 were retrospectively reviewed. Among them, eight male and two female patients with a mean age of 66.7 years developed aggressive ischemic events, and the NIHSS score was elevated by a median of 7 points despite medical therapy. All patients received staged endovascular treatment 4–21 days from onset, at an average of 11 days. The strategy of staged treatment was as follows: first, a microwire was passed through the portion of the occlusion, which was then dilated with balloon inflation to maintain the perfusion above TICI grade 2b. Then, with the use of antiplatelet drugs, the residual intravascular thrombus was gradually eliminated by the continuous perfusion and an activated fibrinolytic system, leaving the residual stenosis. A second stage of angioplasty with stent implantation was subsequently performed if residual stenosis was ≥50%. The NIHSS scores and mRS scores were compared between pre- and post-endovascular treatment groups and in the follow-up period.

Results: Technical success was achieved in 9 patients who received staged endovascular treatment (perforation occurred in one patient during the first stage). The NIHSS scores were significantly improved, with a median score 7 points lower on discharge compared with the scores for the most severe status. Favorable outcomes with mRS score ≤ 2 were achieved in 7 and 9 patients at the 3-month follow-up and the latest follow-up, respectively, which was better than the preoperative status.

Conclusion: Staged endovascular treatment might be a safe, efficient, and viable option in carefully selected patients with symptomatic intracranial vertebral artery occlusion in the early non-acute stage. However, this needs to be confirmed by further investigation, preferably in a large, controlled setting.

Early Hospital Arrival After Acute Ischemic Stroke Is Associated With Family Members' Knowledge About Stroke

Background and Purpose: Prehospital delay is the major factor limiting intravenous thrombolysis and mechanical thrombectomy in acute ischemic stroke (AIS). This study aimed to: (1) identify factors related to prehospital delay and (2) determine the impact of recognition and behavior of family members on patient delay. Methods: A cross-sectional, multicenter study was conducted at six teaching hospitals in China between December 1, 2018 and November 30, 2019. Patients who experienced AIS within 7 days of onset were interviewed. Results: Of 1,782 consecutive patients (male, 57.97%; mean age, 66.3 ± 9.65 years) who had an AIS, 267 (14.98%) patients arrived within 4.5 h and 722 (40.52%) patients arrived within 6 h of stroke onset. Among patients who arrived within 4.5 h, 103 (38.6%) received thrombolysis. Age over 65 years (OR, 2.009; 95% CI, 1.014-3.982), prior stroke (OR, 3.478; 95% CI, 1.311-9.229), blurred vision (OR, 3.95; 95% CI, 1.71-9.123), and patients deciding to seek medical help (OR, 3.097; 95% CI, 1.417-6.769) were independently associated with late arrival. In contrast, sudden onset of symptoms (OR, 0.075; 95% CI, 0.028-0.196), the National Institutes of Health Stroke Scale 7-15 (OR, 0.093; 95% CI, 0.035-0.251), consciousness disturbance (OR, 0.258; 95% CI, 0.091-0.734), weakness (OR, 0.265; 95% CI, 0.09-0.784), arrival by ambulance (OR, 0.102; 95% CI, 0.049-0.211), decision time <30 min (OR, 0.008; 95% CI, 0.003-0.018), and family member understanding stroke requires early treatment (OR, 0.224; 95% CI, 0.109-0.462) were independently associated with early arrival. Conclusions: The prehospital delay in China lags behind Western countries. Recognition and behavior of stroke patients' family members may play a key role in early arrival.

Implementation of regional Acute Stroke Care Map increases thrombolysis rates for acute ischaemic stroke in Chinese urban area in only 3 months

Background

The rate of intravenous thrombolysis for acute ischaemic stroke remains low in China. We investigated whether the implementation of a citywide Acute Stroke Care Map (ASCaM) is associated with an improvement of acute stroke care quality in a Chinese urban area.

Methods

The ASCaM comprises 10 improvement strategies and has been implemented through a network consisting of 20 tertiary hospitals. We identified 7827 patients with ischaemic stroke admitted from April to October 2017, and 506 patients underwent thrombolysis were finally included for analysis.

Results

Compared with ‘pre-ASCaM period’, we observed an increased rate of administration of tissue plasminogen activator within 4.5 hours (65.4% vs 54.5%; adjusted OR, 1.724; 95% CI 1.21 to 2.45; p=0.003) during ‘ASCaM period’. In multivariate analysis models, ‘ASCaM period’ was associated with a significant reduction in onset-to-door time (114.1±55.7 vs 135.7±58.4 min, p=0.0002) and onset-to-needle time (ONT) (169.2±58.1 vs 195.6±59.3 min, p<0.0001). Yet no change was found in door-to-needle time. Clinical outcomes such as symptomatic intracranial haemorrhage, favourable functional outcome (modified Rankin Scale ≤2) and in-hospital mortality remained unchanged.

Conclusion

The implementation of ASCaM was significantly associated with increased rates of intravenous thrombolysis and shorter ONT. The ASCaM may, in proof-of-principle, serve as a model to reduce treatment delay and increase thrombolysis rates in Chinese urban areas and possibly other highly populated Asian regions.

Impact of Jilin Province Stroke Emergency Maps on Acute Stroke Care Improvement in Northeast China

Objectives: Stroke burden is especially heavy in northeast China. Facilities with the capacity to perform acute reperfusion therapies for stroke are unevenly dispersed and are especially inadequate in rural areas. The aim of this study was to establish an effective measure to improve stroke emergency care, eventually increasing the capacity for reperfusion therapy in Jilin province, a less developed province in northeast China.

Methods: We created the Jilin province Stroke Emergency Maps (JSEM), a regional stroke emergency network. Qualified hospitals in Jilin province were integrated into JSEM according to strict inclusion criteria. With constant evaluation and screening, more qualified hospitals may be enrolled into the JSEM, which is updated and published once per year. Locations of hospitals with the capacity to perform intravenous thrombolysis and emergency mechanical thrombectomy were labeled on the map.

Results: After strict evaluation and screening, 19 designated hospitals were integrated into the JSEM in August 2017 (baseline). Following the implementation of the JSEM, 21 more designated hospitals (40 in all) were included in 2018, and 48 more designated hospitals were included in 2019. With the guidance of the JSEM, the rate of intravenous thrombolysis in Jilin province increased remarkably from 3.3% (2017, baseline) and 4.6% (2018) to 5.5% (2019). Mean door-to-needle time decreased from 62 min at baseline (2017) to 45 min 2 years later. The number of mechanical thrombectomy was increased from 457 at baseline (2017) to 749 (2018) and 1,137 (2019) per year, respectively, and mean door-to-puncture time was shortened from 136 to 120 min.

Conclusion: The JSEM, a regional stroke emergency network, serves to improve patient care for stroke. The map's publication increased rates of intravenous thrombolysis and mechanical thrombectomy. JSEM effectively connected more qualified designated hospitals, stroke patients and emergency medical service systems in Jilin province.

Knowledge on Signs and Risk Factors in Stroke Patients

Background: There is a pressing need to contribute evidence to the improvement in the early identification of signs and symptoms associated with strokes, and address the treatment-seeking delays. The objective of this study is to describe the knowledge regarding the warning signs and risk factors (RFs) among stroke patients, as well as of their attitudes toward a suspected event, and the analysis of its possible relationship with the socio-demographic and clinical characteristics of these patients. Method: A cross-sectional study was designed, in which all stroke patients admitted consecutively to the Burgos University Hospital (Spain) were included. The principal outcomes were the patient’s ability to identify two RFs and two warning signs and the patient’s hypothetical response to a possible stroke event. The possible factors associated with the knowledge of warning signs, RFs, and the correct response to a new event were studied using univariate and multivariate regression analysis. Results: A total of 529 patients were included. Having a higher education level or a history of prior stroke were associated with a greater degree of knowledge of warning signs (odds ratio (OR) 3.19, 95% confidence interval (CI) 1.70–5.74, p = 0.003; OR 3.54, 95%CI 2.09–5.99, p ≤ 0.001, respectively), RFs (OR 3.15, 95%CI 1.75–5.67, p = 0.008; OR 4.08, 95%CI 2.41–6.91, p = 0.002, respectively), and the correct response to a possible stroke (OR 1.82, 95%CI 1.16–2.86; p = 0.030; OR 2.11, 95%CI 1.29–3.46, p = 0.022, respectively). Conclusion: Knowledge of warning signs or stroke RFs is low in the hospitalized patients. A previous stroke or secondary/higher education levels are the predictor factors that increase the probability of knowledge of warning signs, RFs, or reaction to possible event.

Large-scale informatic analysis to algorithmically identify blood biomarkers of neurological damage

The identification of precision blood biomarkers which can accurately indicate damage to brain tissue could yield molecular diagnostics with the potential to improve how we detect and treat neurological pathologies. However, a majority of candidate blood biomarkers for neurological damage that are studied today are proteins which were arbitrarily proposed several decades before the advent of high-throughput omic techniques, and it is unclear whether they represent the best possible targets relative to the remainder of the human proteome. Here, we leveraged mRNA expression data generated from nearly 12,000 human specimens to algorithmically evaluate over 17,000 protein-coding genes in terms of their potential to produce blood biomarkers for neurological damage based on their expression profiles both across the body and within the brain. The circulating levels of proteins associated with the top-ranked genes were then measured in blood sampled from a diverse cohort of patients diagnosed with a variety of acute and chronic neurological disorders, including ischemic stroke, hemorrhagic stroke, traumatic brain injury, Alzheimer's disease, and multiple sclerosis, and evaluated for their diagnostic performance. Our analysis identifies several previously unexplored candidate blood biomarkers of neurological damage with possible clinical utility, many of which whose presence in blood is likely linked to specific cell-level pathologic processes. Furthermore, our findings also suggest that many frequently cited previously proposed blood biomarkers exhibit expression profiles which could limit their diagnostic efficacy.

Improving timely treatment with a stroke emergency map: The case of northern China

OBJECTIVE

The Chinese stroke emergency map (SEM) was implemented in 2017 to reduce prehospital and hospital delays for acute ischemic stroke (AIS) patients suitable for intravenous recombinant tissue plasminogen activator (rt-PA) thrombolysis. However, data on the time delay following the implementation of an SEM in China are limited.

METHODS

Data for suspected stroke patients from the SEM registry center of Taiyuan, Shanxi Province, from August 2017 to July 2019, patients' characteristics, thrombolysis rate, and functional outcome at 90 days were analyzed.

RESULTS

One thousand seven hundred and eighty six patients who arrived at hospitals within 4.5 hr of onset were included; 35.9% arrived by emergency medical services (EMSs), and 1,207 (67.6%) of the population received intravenous rt-PA. As a result of the SEM, the number of patients treated with rt-PA increased from 63.9% in phase 1 (August 2017 to July 2018) to 70.5% in phase 2 (August 2018 to July 2019). The median onset-to-door and onset-to-needle times decreased by five minutes (100 [IQR: 62-135] vs. 105 [IQR: 70-145], p = .005) and nine minutes (158 [IQR: 124-197] vs. 167 [IQR: 132-214], p = .001), respectively. Patients in phase 2 achieved greater independent function outcome at 90 days (79.9% vs. 72.1%; adjusted odds ratio, 2.010; 95% confidence interval, 1.444-2.798). The binary logistic regression models revealed that shorter onset-to-needle time (OR: 0.994; 95% CI: 0.992-0.997; p < .001) and lower baseline NIHSS scores (OR: 39.120; 95% CI: 23.477-65.188; p < .001 and OR: 18.324; 95% CI: 11.425-29.388; p < .001 and OR: 3.123; 95% CI: 2.044-4.773; p < .001) were significant predictors for the independent function outcome.

CONCLUSION

The implementation of a stroke emergency map is more likely to reduce prehospital delays and improve function outcomes. Future efforts should attempt to increase EMS usage.

Stroke in China: advances and challenges in epidemiology, prevention, and management

With over 2 million new cases annually, stroke is associated with the highest disability-adjusted life-years lost of any disease in China. The burden is expected to increase further as a result of population ageing, an ongoing high prevalence of risk factors (eg, hypertension), and inadequate management. Despite improved access to overall health services, the availability of specialist stroke care is variable across the country, and especially uneven in rural areas. In-hospital outcomes have improved because of a greater availability of reperfusion therapies and supportive care, but adherence to secondary prevention strategies and long-term care are inadequate. Thrombolysis and stroke units are accepted as standards of care across the world, including in China, but bleeding-risk concerns and organisational challenges hamper widespread adoption of this care in China. Despite little supporting evidence, Chinese herbal products and neuroprotective drugs are widely used, and the increased availability of neuroimaging techniques also results in overdiagnosis and overtreatment of so-called silent stroke. Future efforts should focus on providing more balanced availability of specialised stroke services across the country, enhancing evidence-based practice, and encouraging greater translational research to improve outcome of patients with stroke.

Diagnosis of ischemic stroke using circulating levels of brain-specific proteins measured via high-sensitivity digital ELISA

Limited lower detection ranges associated with traditional immunoassay techniques have prevented the use of brain-specific proteins as blood biomarkers of stroke in the acute phase of care, as these proteins are often only present in circulation at low concentrations. Digital ELISA is a newly developed technique with allows for quantification of proteins in biofluids with up to 1000 times greater sensitivity than conventional ELISA techniques. The purpose of this study was to determine whether the extended lower limits of detection associated with digital ELISA could enable the use of brain-specific proteins as blood biomarkers of ischemic stroke during triage. Blood was sampled from ischemic stroke patients (n = 14) at emergency department admission, as well as from neurologically normal controls matched in terms of risk factors for cardiovascular disease (n = 33). Plasma levels of two brain-specific axonal proteins, neurofilament light chain (NfL) and tau, were measured via digital ELISA, and receiver-operating characteristic analysis was used to determine their ability to discriminate between groups. Plasma levels of NfL and tau were both significantly elevated in stroke patients versus controls, and could respectively discriminate between groups with 92.9% sensitivity / 84.9% specificity, and 85.7% sensitivity / 54.6% specificity. Furthermore, adjustment of measured NfL and Tau levels according to the lower-limits of detection associated with commercially-available conventional ELISA assays resulted in a dramatic and statistically significant decrease in diagnostic performance. Collectively, our results suggest that the increased analytical sensitivity of digital ELISA could enable the use of brain-specific proteins as blood biomarkers of ischemic stroke during triage.

Increased recurrent risk did not improve cerebrovascular disease survivors' response to stroke in China: a cross-sectional, community-based study

Background

Cerebrovascular disease (CVD) survivors are at a high risk of recurrent stroke. Although it is thought that survivors with higher risk of stroke respond better to stroke onset, to date, no study has been able to demonstrate that. Thus, we investigated whether the intent to call emergency medical services (EMS) increased with recurrent stroke risk among CVD survivors.

Methods

A cross-sectional community-based survey was conducted from January 2017 to May 2017, including 187,723 adults (age ≥ 40 years) across 69 administrative areas in China. A CVD survivor population of 6290 was analyzed. According to the stroke risk score based on Essen Stroke Risk Score, CVD survivors were divided into three subgroups: low (0), middle (1–3) and high (4–7) recurrent risk groups. Multivariable logistic regression models were used to identify the association between the stroke risk and stroke recognition, as well as stroke risk and EMS calling.

Results

The estimated stroke recognition rate in CVD survivors with low, middle, and high risk was 89.0% (503/565), 85.2% (3841/4509), and 82.5% (1001/1213), respectively, while the rate of calling EMS was 66.7% (377/565), 64.3% (2897/4509), and 69.3% (840/1213), respectively. The CVD survivors’ knowledge of recognizing stroke and intent to call EMS did not improve with recurrent stroke risk, even after adjustment for multiple socio-demographic factors.

Conclusions

Despite being at a higher risk of recurrent stroke, Chinese CVD survivors showed poor knowledge of stroke, and their intent to call EMS did not increase with recurrent stroke risk. Enhanced and stroke risk-orientated education on stroke recognition and proper response is needed for all CVD survivors.

Stepwise stroke recognition through clinical information, vital signs, and initial labs (CIVIL): Electronic health record-based observational cohort study

BACKGROUND

Stroke recognition systems have been developed to reduce time delays, however, a comprehensive triaging score identifying stroke subtypes is needed to guide appropriate management. We aimed to develop a prehospital scoring system for rapid stroke recognition and identify stroke subtype simultaneously.

METHODS AND FINDINGS

In prospective database of regional emergency and stroke center, Clinical Information, Vital signs, and Initial Labs (CIVIL) of 1,599 patients suspected of acute stroke was analyzed from an automatically-stored electronic health record. Final confirmation was performed with neuroimaging. Using multiple regression analyses, we determined independent predictors of tier 1 (true-stroke or not), tier 2 (hemorrhagic stroke or not), and tier 3 (emergent large vessel occlusion [ELVO] or not). The diagnostic performance of the stepwise CIVIL scoring system was investigated using internal validation. A new scoring system characterized by a stepwise clinical assessment has been developed in three tiers. Tier 1: Seven CIVIL-AS3A2P items (total score from -7 to +6) were deduced for true stroke as Age (≥ 60 years); Stroke risks without Seizure or psychiatric disease, extreme Sugar; "any Asymmetry", "not Ambulating"; abnormal blood Pressure at a cut-off point ≥ 1 with diagnostic sensitivity of 82.1%, specificity of 56.4%. Tier 2: Four items for hemorrhagic stroke were identified as the CIVIL-MAPS indicating Mental change, Age below 60 years, high blood Pressure, no Stroke risks with cut-point ≥ 2 (sensitivity 47.5%, specificity 85.4%). Tier 3: For ELVO diagnosis: we applied with CIVIL-GFAST items (Gaze, Face, Arm, Speech) with cut-point ≥ 3 (sensitivity 66.5%, specificity 79.8%). The main limitation of this study is its retrospective nature and require a prospective validation of the CIVIL scoring system.

CONCLUSIONS

The CIVIL score is a comprehensive and versatile system that recognizes strokes and identifies the stroke subtype simultaneously.

Stroke Awareness in Patients with Incident Stroke Compared to Patients without Stroke or Ischemic Heart Disease

BACKGROUND

Stroke awareness is known to influence treatment seeking and risk reduction behavior, but there is limited data from Sri Lanka and South Asia.

AIM

To describe stroke awareness in incident stroke patients and to compare with patients without stroke and/or ischemic heart disease (IHD) in a Sri Lankan tertiary-care center.

METHODS

We studied awareness of stroke in all incident stroke patients admitted to a tertiary-care center in Sri Lanka and compared with a group of age- and sex-matched patients without stroke and/or IHD, over 2 years. Knowledge on stroke mechanisms, risk factors, symptoms, prognosis, treatment, and prevention were evaluated using a 40-item interviewer-administered questionnaire and converted to a composite score of 100%. Total awareness was categorized as Very poor (<24%), Poor (25%-49%), Good (50%-74%), and Very good (>74%).

RESULTS

One hundred and sixty four incident stroke patients (mean age 62.0 ± 11.5 years; 64.6% males) and 164 patients without stroke and/or IHD were studied. Mean stroke awareness was 47.79% ± 14.6 in stroke patients, and 47.73% ± 14.9 in the nonstroke and/or IHD patients (P = .95). Of the associations studied, better stroke awareness (>50%) was associated only with higher education levels (OR 1.90, 95%CI 1.33-2.72, P < .001) in stroke patients.

CONCLUSIONS

Stroke awareness is not satisfactory in incident stroke patients and is no better than in patients without stroke and/or IHD. Better stroke awareness was associated with higher education levels.

Annual rates of and factors influencing inpatient and outpatient transient ischaemic attacks in Chinese population: a nationally representative cross-sectional survey

OBJECTIVES

To investigate the rates and influencing factors of transient ischaemic attack (TIA) inpatient admissions and outpatient visits in China.

SETTING

A door-to-door survey of 178 059 families from 155 urban and rural areas in 31 provinces in China, 2013.

PARTICIPANTS

Total 596 536 people were assessed in the annual rate analysis, and 829 TIA patients were assessed in the influencing factor analysis.

MAIN OUTCOME MEASURES

The weighted annual rates of TIA inpatient admissions and outpatient visits and the factors influencing inpatient admissions and outpatient visits for TIA patients.

RESULTS

The weighted annual inpatient admission rate per TIA patient was 25.8 (95% CI: 18.4 to 36.2) per 100 000 in the population, whereas the weighted annual inpatient admission rate for patients with TIAs was 32.5 (95% CI: 23.3 to 38.9) per 100 000 in the population. The weighted annual outpatient visit rate per TIA patient was 34.4 (95% CI: 26.2 to 45.1) per 100 000 in the population, whereas the weighted annual outpatient visit rate for patients with TIAs was 149.6 (95% CI: 127.0 to 165.5) per 100 000. The inpatient rate was higher for men than for women (OR: 2.24; 95% CI: 1.40 to 3.59; p=0.001), for TIA patients with stroke than for patients with isolated TIAs (2.93; 2.01 to 4.25; p<0.001), for TIA patients with hypertension than for TIA patients without hypertension (2.60; 1.65 to 4.11; p<0.001). The outpatient rate was higher for TIA patients with stroke than for patients with isolated TIAs (1.88; 1.33 to 2.64; p<0.001), for TIA patients with dyslipidaemia than for TIA patients without dyslipidaemia (1.92; 1.30 to 2.83; p=0.001).

CONCLUSIONS

The annual rates of TIA inpatient admissions and outpatient visits in population are low, probably due to the lack of access to inpatient and outpatient services experienced by the majority of TIA patients in the population, and individuals' socio-demographic characteristics, disease histories and stroke prognosis may be associated with inpatient and outpatient TIAs.

Use of Emergency Medical Services and Timely Treatment Among Ischemic Stroke

Background and Purpose- Emergency medical services (EMSs) are critical for early treatment of patients with ischemic stroke, yet data on EMS utilization and its association with timely treatment in China are still limited. Methods- We examined data from the Chinese Stroke Center Alliance for patients with ischemic stroke from June 2015 to June 2018. Absolute standardized difference was used for covariates' balance assessments. We used multivariable logistic models with the generalized estimating equations to account for intrahospital clustering in identifying demographic and clinical factors associated with EMS use as well as in evaluating the association of EMS use with timely treatment. Results- Of the 560 447 patients with ischemic stroke analyzed, only 69 841 (12.5%) were transported by EMS. Multivariable-adjusted results indicated that those with younger age, lower levels of education, less insurance coverage, lower income, lower stroke severity, hypertension, diabetes mellitus, and peripheral vascular disease were less likely to use EMS. However, a history of cardiovascular diseases was associated with increased EMS usage. Compared with self-transport, EMS transport was associated with significantly shorter onset-to-door time, door-to-needle time (if prenotification was sent), earlier arrival (adjusted odds ratio [95% CIs] were 2.07 [1.95-2.20] for onset-to-door time ≤2 hours, 2.32 [2.18-2.47] for onset-to-door time ≤3.5 hours), and more rapid treatment (2.96 [2.88-3.05] for IV-tPA [intravenous recombinant tissue-type plasminogen activator] in eligible patients, 1.70 [1.62-1.77] for treatment with IV-tPA by 3 hours if onset-to-door time ≤2 hours, and 1.76 [1.70-1.83] for treatment with IV-tPA by 4.5 hours if onset-to-door time ≤3.5 hours). Conclusions- Although EMS transportation is associated with substantial reductions in prehospital delay and improved likelihood of early arrival and timely treatment, rate of utilization is currently low among Chinese patients with ischemic stroke. Developing an efficient EMS system and promoting culture-adapted education efforts are necessary for improving EMS activation.

Factors Associated with Shortening of Prehospital Delay among Patients with Acute Ischemic Stroke

BACKGROUND

Despite recent advances in acute stroke care, only 1-8% of patients can receive reperfusion therapies, mainly because of prehospital delay (PHD).

OBJECTIVE

This study aimed to identify factors associated with PHD from the onset of acute stroke symptoms until arrival at the hospital.

METHODS

A cross-sectional study was conducted including all patients consecutively admitted with stroke symptoms to Burgos University Hospital (Burgos, Spain). Socio-demographic, clinical, behavioral, cognitive, and contextualized characteristics were recorded, and their possible associations with PHD were studied using univariate and multivariable regression analyses.

RESULTS

The median PHD of 322 patients was 138.50 min. The following factors decreased the PHD and time until reperfusion treatment where applicable: asking for help immediately after the onset of symptoms (OR 10.36; 95% confidence interval (CI) 4.47-23.99), onset of stroke during the daytime (OR 7.73; 95% CI 3.09-19.34) and the weekend (OR 2.64; 95% CI 1.19-5.85), occurrence of stroke outside the home (OR 7.09; 95% CI 1.97-25.55), using a prenotification system (OR 6.46; 95% CI 1.71-8.39), patient's perception of being unable to control symptoms without assistance (OR 5.14; 95% CI 2.60-10.16), previous knowledge of stroke as a medical emergency (OR 3.20; 95% CI 1.38-7.40), call to emergency medical services as the first medical contact (OR 2.77; 95% CI 1.32-5.88), speech/language difficulties experienced by the patient (OR 2.21; 95% CI 1.16-4.36), and the identification of stroke symptoms by the patient (OR 1.98; 95% CI 1.03-3.82).

CONCLUSIONS

The interval between the onset of symptoms and arrival at the hospital depends on certain contextual, cognitive, and behavioral factors, all of which should be considered when planning future public awareness campaigns.

Cardiovascular surgery experience does not significantly improve patients' response to stroke

OBJECTIVES

Patients with a history of cardiovascular surgery are at risk of stroke, and immediately calling emergency medical services (EMS) after stroke onset is crucial to receiving effective reperfusion therapy. We aimed to determine the effect of a history of cardiovascular surgery on patients' ability to recognize stroke and intent to call EMS.

METHODS

We performed a cross-sectional community-based study from January 2017 to May 2017. A total population of 186,167 individuals, recruited from 69 administrative areas across China, was analyzed. Different multivariable logistic regression models were performed to identify the associations between cardiovascular surgical history and stroke recognition or intent to call EMS, respectively.

RESULTS

0.1% of the total population had a history of cardiovascular surgery. In the surgery group, the estimated stroke recognition rate (SRR) and correct action rate (CAR) were 84.9% and 74.7%, respectively. The prevalence of cardiovascular risk factors was significantly higher in the surgery group. Cardiovascular surgical history was not associated with recognition of stroke across different models. The surgery group was more likely to call EMS, but the difference was not significant after full adjustment (OR: 1.40, 95% CI: 0.99-1.98, p = .0572).

CONCLUSIONS

Cardiovascular surgical history does not influence patients' likelihood of calling EMS more often at stroke onset. Patients receiving cardiovascular surgeries should be counseled regarding stroke recognition, proper response to stroke, and the importance of controlling risk factors.

High-Throughput Profiling of Circulating Antibody Signatures for Stroke Diagnosis Using Small Volumes of Whole Blood

Accurate stroke recognition during triage can streamline care and afford patients earlier access to life-saving interventions. However, the tools currently available to clinicians for prehospital and early in-hospital identification of stroke are limited. The peripheral immune system is intricately involved in stroke pathology and thus may be targetable for the development of immunodiagnostics. In this preliminary study, we sought to determine whether the circulating antibody pool is altered early in stroke, and whether such alterations could be leveraged for diagnosis. One hundred microliters of peripheral whole blood was sampled from 19 ischemic stroke patients, 17 hemorrhagic stroke patients, and 20 stroke mimics in the acute phase of care. A custom-fabricated high-density peptide array comprising 125,000 unique probes was used to assess the binding characteristics of blood-borne antibodies, and a random forest-based approach was used to select a parsimonious set of probes with an optimal ability to discriminate between groups. The coordinate antibody binding intensities of the top 17 probes identified in our analysis displayed an ability to differentiate the total pool of stroke patients from stroke mimics with 92% sensitivity and 90% specificity, as well as detect hemorrhage with 88% sensitivity and 87% specificity, as determined using a same-set cross-validation. These preliminary findings suggest that stroke-associated alterations in the circulating antibody pool may have clinical utility for diagnosis during triage, and that such a possibility warrants further investigation.

Shenzhen stroke emergency map improves access to rt-PA for patients with acute ischaemic stroke

Prehospital delay is one of the major causes of low rate of intravenous recombinant tissue plasminogen activator (rt-PA) thrombolysis for acute ischaemic stroke in China. Regional emergency systems have been proven a successful approach to improve access to thrombolysis. Shenzhen is a high population density city with great geographical disparity of healthcare resources, leading to limited access to rt-PA thrombolysis for most patients with acute ischaemic stroke. To improve rapid access to rt-PA thrombolysis in Shenzhen, a Shenzhen stroke emergency map was implemented by Shenzhen healthcare administrations. This map comprised certification of qualified local hospitals, identification of patients with stroke, acute stroke transport protocol and maintenance of the map. We conducted a retrospective observational study to compare consecutive patients with acute stroke arriving at qualified local hospitals before and after implementation of the Shenzhen stroke emergency map. After implementation of the map, the rate of patients receiving rt-PA thrombolysis increased from 8.3% to 9.7% (p=0.003), and the rate of patients treated with endovascular thrombectomy increased from 0.9% to 1.6% (p<0.001). Sixteen of 20 hospitals have an increase in the number of patients with stroke treated with rt-PA thrombolysis. The median time between receipt of the call and arrival on the scene reduced significantly (17.0 min vs 9.0 min, p<0.001). In Shenzhen Second People's Hospital, the median onset-to-needle time and door-to-needle time were reduced (175.5 min vs 149.5 min, p=0.039; 71.5 min vs 51.5 min, p<0.001). No statistically significant differences were found in the proportion of rt-PA-treated patients within various geographical distances. Currently, there are more than 40 cities in China implementing a stroke emergency map. The Shenzhen stroke emergency map improves access to rt-PA thrombolysis for acute ischaemic stroke, and the novel model has been expanded to multiple areas in China. Future efforts should be conducted to optimise the stroke emergency map.

Public Awareness of Stroke and the Appropriate Responses in China: A Cross-Sectional Community-Based Study (FAST-RIGHT)

Background and Purpose—Early presentation is critical for receiving effective reperfusion therapy for acute ischemic stroke, therefore, we undertook a national survey of awareness and responses to acute stroke symptoms in China. Methods—We undertook a cross-sectional community-based study of 187 723 adults (age ≥40 years) presenting to 69 administrative areas across China between January 2017 and May 2017 to determine the national stroke recognition rate and the correct action rate. Multivariable logistic regression models were used to identify factors associated with stroke recognition and intention-to-avail emergency medical services. Results—Estimates of stroke recognition rate and correct action rate were 81.9% (153 675/187723) and 60.9% (114 380/187723), respectively, but these rates varied widely by sociodemographic status, region, and stroke risk. Approximately one-third of participants who recognized a stroke failed to call emergency medical service. Low likelihood of emergency medical service use was associated with younger age (40–59 years), being male, rural location, (regions of east, south, and northwest China), high body mass index (≥24), low education (primary school or below), low personal income (<US $731 per annum), living with immediate family, having multiple children (≥2), having a friend with stroke, exposure to less avenues to learn about stroke, nonsmoking, regular exercise, unknown family history, and no history of cardiovascular disease. Intention of calling emergency medical service was strongly related to awareness of stroke (odds ratio 2.05; 95% CI, 2.00–2.10; P<0.001). Conclusions—Substantial discrepancies exist between stroke recognition and correct action and not all stroke patients know the appropriate responses. Further, national stroke educational programs with specific plans targeting different groups are needed, which do not solely focus on stroke recognition, but also on the appropriate responses at the time of a stroke.

A retrospective analysis of time delays in patients presenting with stroke to an academic emergency department

Background

Stroke presents commonly to the emergency department (ED), and is a common cause of morbidity and mortality in South Africa. Early ED presentation and early neuroimaging are required in order for thrombolysis to be a potential therapeutic modality.

Objectives

To determine the time to ED presentation, time to computed tomography (CT) scan and the potential influencing factors for patients with stroke.

Methods

A retrospective record review of all patients who presented with clinical features of stroke to a tertiary academic ED in Johannesburg, South Africa, from 01 January to 31 December 2014.

Results

Data from 232 eligible stroke patients were analysed. The median time to presentation to the ED was 33 h with the majority of patients (81.3%) presenting after the 4.5 h window for thrombolysis. The median time to CT was 8 h. Only 3.9% of patients had a CT scan within one hour of arrival. Patients with loss of consciousness were associated with earlier hospital presentation (p = 0.001). None of the patients were thrombolysed.

Conclusion

Patients with stroke commonly present late to hospital. If we are to make a difference in this group of vulnerable patients, further education and training needs to be emphasised regarding ‘time is brain’. Communication and commitment is also required by the emergency medical services, ED and radiology staff in order to prioritise stroke patients and to reduce delays.

Calling for a rapid recognition and response program for stroke in China

In this article, we provide evidences indicating that a a rapid recognition and response program based on FAST (face, Arm, Speech, Time) for stroke suitable for China is desperately needed.