Re-evaluating the gender gap: a cross-sectional analysis of accepted American Academy of Neurology annual meeting abstracts in 2020 and 2021

Background and objective

Prior studies reveal that invited speaker panels, editorial boards, authors of practice guidelines, and senior authors of published articles are disproportionately male in the neurology field. We aimed to analyze a gender gap in authorship of accepted abstracts to the American Academy of Neurology annual meetings in 2020 and 2021.

Design/methods

This is a cross-sectional study evaluating the proportions of female first and senior abstract authors in 2020 and 2021. Abstracts were reviewed manually (n = 3,211 in 2020; n = 2,178 in 2021). Data were collected regarding the gender of first and senior authors, subspecialties, and origin of research (USA, international, or corporate-affiliated). Then, we compared the percentages of female first and senior authors in the 2 years to assess for any short-term effects of the COVID-19 pandemic.

Results

Accepted abstracts with female first and senior authors comprised 46%, 34% in 2020, and the same in 2021, without change. Female senior authors had a significantly higher proportion of female first authors than their male senior author counterparts. The analysis of subspecialties with more than 100 abstracts showed the lowest percentages of female senior authors was oncology (24.7%), sleep (25.5%), headache (28.7%), and cerebrovascular disease (29%) in 2020. Cerebrovascular disease (29%) and behavioral neurology (24.7%) had the lowest percentage of female senior authors in 2021. In the analysis of the origin of research, corporate-affiliated authors had the lowest percentages of female first (34 and 36%) and senior authors (22.6 and 27.6%).

Conclusion

The gender gap in neurology was reaffirmed in regards to female senior authorship overall and in subgroups of abstracts including cerebrovascular disease, headache, behavioral neurology, sleep, oncology, and corporate-affiliated research.

Dietary Intake and Quality among Stroke Survivors: NHANES 1999-2018

BACKGROUND

Nutrition is an important modifiable risk factor for prevention and treatment of stroke. However, examination of nutrient intake and diet quality in stroke survivors is limited.

OBJECTIVES

The aim of the study was to estimate usual nutrient intake and diet quality in US adults with and without a history of self-reported stroke.

METHODS

Using US National Health and Nutrition Examination Survey (NHANES) 1999-2018, we analyzed demographics, health history, and dietary intake data in 1626 individuals with a history of stroke matched for age, gender, and survey cycle to respective controls (n=1621) with no history of stroke. A minimum of one 24-h dietary recall was used to assess dietary intake. Diet quality was determined using Healthy Eating Index 2015 (HEI-2015) scores. Adult food security was assessed based on responses to the US Department of Agriculture Household Food Security Survey Module. Physical and mental limitations were assessed from responses to the NHANES Physical Functioning Questionnaire. Estimates were reported as mean (standard error).

RESULTS

In comparison to controls, stroke survivors were more likely to be food insecure, experience poverty, and report physical and mental limitations (P < .001, all comparisons). Stroke survivors were more likely to report excessive (% > acceptable macronutrient distribution range) intake for total fat (50.9 [2.7]% vs. 40.4 [2.2]%, P < .001) and inadequate intake (% < estimated average requirement) for calcium (54.6 [1.8]% vs. 43.5 [2.4]%, P = .001) and magnesium (66 [1.8] vs. 53.6 [1.8]%, P < .001). In addition, stroke survivors reported lower HEI-2015 total scores than controls (49.8 vs. 51.9, P < .001). Finally, HEI-2015 total scores were lower in stroke survivors who were food insecure and those with a lower income-to-poverty ratio (< 185%) (P = .001).

CONCLUSIONS

Dietary intake in stroke survivors was nutritionally poor, with suboptimal nutrient intake and lower overall diet quality compared with age- and gender-matched controls. Furthermore, poverty and food insecurity were more prevalent in stroke survivors and associated with worse diet quality.

Abstract WP195: Dietary Fat Intake, Food Insecurity, And Anxiety Among Stroke Survivors

Introduction: During recovery, stroke patients are at risk of developing psychological complications impacting their quality of life. Diets rich in fat negatively impact anxiety disorders; however, this relationship has not been explored among stroke survivors considering food insecurity status, a social determinant of health (SDOH).

Methods: In a population-based cohort of 309 patients with acute stroke, we retrospectively assessed self-administered surveys to evaluate the association between dietary fat intake and anxiety in stroke survivors presenting for an initial visit at a University-based stroke clinic from January 2021-July 2021 in Houston, Texas. Anxiety was measured using the GAD-7 scoring system and dichotomized to either “None/Mild” or “Moderate/Severe.” Dietary fat intake was calculated using the quality frequency screener; food insecurity status, using the Hunger Vital sign screener.

Results: Among this population, 15.46% reported food insecurity and 50.8% (N=157) had moderate to severe anxiety. The multivariable logistic regression model showed that total fat intake (Odds Ratio (OR)=1.01, 95% CI: 1.00, 1.03; P-value=0.016) and percent fat (OR=1.06, 95% CI: 1.01, 1.11; P-value=0.018) dietary intake had a statistically significant negative impact on anxiety, adjusting for covariates and an interaction term between food insecurity status and dietary fat intake.

Conclusion: Although studies describe the role of a healthy diet in stroke, this is the first study that looks at dietary fat intake as it relates to stroke and anxiety, as well as, food insecurity among stroke survivors. SDOH including food access and affordability are associated with stroke risk and dietary fat outcomes. A better understanding of fat intake and associated factors in this population will provide an opportunity for developing interventions for those at highest risk. Access to healthy foods may prevent higher intake of fat in one’s diet and reduce the risk of stroke.

Abstract 145: Dietary Intake And Quality Among Stroke Survivors Compared To Matched Controls Who Participated In The National Health And Nutrition Examination Survey: 1999 - 2018

Introduction: Nutrition is an important modifiable risk factor for the prevention and treatment of stroke. However, the examination of nutrient intake and diet quality in stroke survivors is limited. The purpose of this study was to estimate usual nutrient intake and diet quality in a nationally representative sample of US adults who have a history of stroke and compare to controls.

Methods: National Health and Nutrition Examination Survey 1999-2018 data were used to examine 1,626 stroke survivors matched for age, gender, and survey cycle to their respective controls (n=1,621), with no history of stroke. Data were collected on demographics and dietary intake and quality (assessed by Healthy Eating Index [HEI] 2015) from at least one reliable 24-h dietary recall. Estimates were reported as mean[SE]. Differences in continuous and categorical variables were assessed using independent-samples t-tests and Rao-Scott Chi-Squared tests, respectively.

Results: In comparison to controls, stroke survivors were more likely to report excessive (% > Acceptable Macronutrient Distribution Range) intake for total fat (50.9%[2.7] vs. 40.4%[2.2], p<.001), and inadequate intake (% < Estimated Average Requirement) for calcium (54.6%[1.8] vs. 43.5%[2.4], p=.001) and magnesium (66%[1.8] vs. 53.6%[1.8], p<.001). In addition, stroke survivors were less likely to report adequate intakes (% > Adequate Intake) for fiber (6.8%[0.9] vs. 11.9%[1.3]) and potassium (0.8%[0.3] vs. 1.0%[0.4]) (p<.001, all comparisons). Finally, stroke survivors reported lower HEI scores than controls (49.8 vs. 51.9, p<.001) which indicates lower diet quality, and were more likely to be food insecure, and report physical and mental limitations including difficulty preparing and eating meals compared to controls (p<.001, all comparisons).

Conclusions: Stroke survivors had lower overall diet quality and greater prevalence of inadequate nutrient intake profiles typically associated with increased risk of cardiovascular diseases including higher total fat intake and lower intake of key micronutrients and fiber compared to matched controls. Stroke survivors were also more likely to experience food insecurity and have physical and mental limitations that may directly impact dietary intake.

Abstract WP110: Predictors Of False Positive Shunt Detected By Transcranial Doppler: When Is Intracardiac Echocardiogram Beneficial?

Background and Objective: Right to left shunts (RLS) found with patent foramen ovale (PFO) are implicated in the pathogenesis of cryptogenic stroke and a risk factor for neurological event. The capability and sensitivity of Transcranial Doppler ultrasound (TCD) to detect a PFO has been established. However, predictors of false positive shunts detected by TCD and benefit of intracardiac echocardiogram (ICE) when studies show conflicting results have not been determined.

Methods: In this retrospective study, patients who underwent shunt testing with ICE ± endovascular atrial septal defect closure from 2018 till 2022 were included. We abstracted data regarding the type of study used for shunt detection such as transthoracic echocardiogram (TTE), transesophageal echocardiogram (TEE), ICE and TCD. PFO size and characteristics were evaluated. International consensus criteria were used for TCD PFO detection.

Results: A total of 184 patients underwent ICE testing, of which 169 (93.4%) had prior TTE, 116 (63%) TEE, and 48 (25%) prior TCD. Among 48 patients with TCD, 24 had negative TTE and 4 had negative TEE. Mean (SD) age was 51.1(14.4). 110(59.8%) were female. Among all patient with ICE 169 (91.8%) had PFO. PFOs were detected in 38 out of 48 (79.1%) patients who had been assessed with both ICE and TCD, whereas 6 patients (12/5%) were found to have a RLS on TCD but no PFO on ICE, p<0.01. Comparing ICE and TCD grading scores for shunt detected, 45.2% had higher grade by TCD compared to ICE, p= 0.17. Among the six false positive cases on TCD, four of them had shower of microembolization and 2 of them had 0-10 HITS microemboli detection.

Conclusion: Transcranial Doppler ultrasound detection of right to left shunt remains highly sensitive and a non-invasive tool. Considering ICE as gold standard, TCD is associated with false positive shunt detection. Further studies are warranted to assess the shunt characteristics on TCD that are associated with higher predictive value for identifying PFO.

The effects of racism and resilience on Black stroke- survivor quality of life: Study protocol and rationale for a mixed-methods approach

Introduction

Stroke, a life-threatening stressor, often negatively impacts stroke-survivor (SS) quality of life (QoL). Annual age-adjusted incidence and death rates for stroke are significantly higher among Black Americans than among White Americans. Racism, a significant stressor, occurs at structural, cultural, and interpersonal levels and contributes to health disparities for Black SS. Resilience, a dynamic process of positive adaptation to significant stress, is impacted by factors or resources both internal and external to the individual. This study aims to examine the effects of experiences of racism and resilience on Black SS QoL during early stroke recovery. This article presents the study protocol.

Methods and analyses

This will be a prospective observational mixed-methods study. Black community-dwelling adults who are within 4 weeks of a stroke will be eligible for inclusion. Baseline measures will include the exposure variables of experiences of racism and resilience. Covariates measured at baseline include sociodemographic variables (age, sex, marital status, education, income, health insurance, employment status, number of people in household, residential address), clinical variables (date and type of stroke, inferred Modified Rankin Scale, anxiety and depression screening), and psychosocial variables (COVID-19 stress, perceived stress, mindfulness). The outcome variable (QoL) will be assessed 6-months post-stroke. Multiple-level linear regression models will be used to test the direct effects of experiences of racism, and the direct and indirect effects of resilience, on QoL. Qualitative data will be collected via focus groups and analyzed for themes of racism, resilience, and QoL.

Discussion

Racism can compound the stress exerted by stroke on Black SS. This study will occur during the COVID-19 pandemic and in the aftermath of calls for social justice for Black Americans. Experiences of racism will be measured with instruments for both “everyday” discrimination and vigilance. Sociodemographic variables will be operationalized to assess specific social determinants of health that intersect with structural racism. Because of the long-standing history of racism in the United States of America (USA), cultural influences and access to resources are central to the consideration of individual-level resilience in Black SS. Study results may inform the development of interventions to support Black SS QoL through enhanced resilience.

Interdisciplinary patient-centred poststroke care in Follow-up After Stroke, Screening and Treatment (FASST) clinic model: a proof-of-concept pilot study

Background

Although secondary stroke prevention is important, the optimal outpatient model that improves risk factor control and decreases post-stroke complications effectively has not been established. We created Follow-up After Stroke, Screening and Treatment (FASST), an interdisciplinary clinic involving stroke physicians and pharmacists to address poststroke complications and secondary stroke prevention systemically. We present our approach to assess its proof-of-concept in our pilot study.

Methods

We included the patients attending FASST clinic after their hospital discharge. We used validated survey screens to assess for complications: depression, anxiety, sleep disorders, cognitive impairment, disability, social support, quality of life and functional status. Data were collected including risk factors, complication screening results and outcome scores. Clinical pharmacists assessed risk factor control and health-related behaviours for modification.

Results

Of the 25 patients enrolled in the interdisciplinary clinic, all had comorbid hyperlipidaemia and hypertension, and 44% had diabetes mellitus. About one-third needed medication changes for risk factor control. On screening, 16% of patients were found to have depression, 12% had anxiety and 20% had sleep apnoea. These patients were either managed in the clinic or were referred to relevant subspeciality clinics. The status of risk factor control was assessed in all patients, and 32% had medications adjustments.

Conclusion

Our preliminary data found that FASST clinic model is feasible and potentially useful. It represents an integrated approach to post-stroke care, with pharmacist collaboration to improve risk factor control, while assessing for poststroke complications. Further study is needed to improve health outcomes through integrated poststroke care.

Abstract WMP36: Closing Gaps In Care Of Patients With Embolic Stroke Of Unknown Source: A Multi-disciplinary Approach

Introduction: Embolic Stroke of Undetermined Source (ESUS) describes non-lacunar ischemic strokes, with no definite etiology after minimal standard work-up. Approximately 17% of ischemic strokes are ESUS, and patients are generally younger with mild strokes and higher Quality-Adjusted Life Years at stake, given annual 5% recurrence. Additional cardiac evaluation is often required for ESUS evaluation. A Multi-Disciplinary Clinic (MDC) employing vascular neurology and cardiology may improve diagnosis and outcomes, facilitate shared decision-making, and provide an enhanced clinical experience for patients with ESUS. We describe our experience.

Methods: The UTHealth ESUS clinic was established in April 2019, as a monthly half-day clinic. Patients with ESUS (and without known PFO) are referred following ischemic stroke hospitalization or after evaluation in the stroke clinic. Patients are seen by a vascular neurologist and a cardiologist (EP specialist) in a single visit to ensure standardized, appropriate secondary stroke prevention. The specialists review cardiac imaging and monitoring data and discuss the need for additional work-up. While some patients present to the clinic with an event monitor or implantable loop recorder (ILR) in place, others are referred for long-term monitoring following the encounter. Patients are also screened for clinical trials, and stroke fellows rotate through the clinic to gain experiences managing this patient population.

Results: A total of 36 patients have been evaluated at the ESUS clinic. Median age was 63 (52-71) and 15 (41%) patients were women. Patients were seen a median of 30 days from discharge/referral. Long-term cardiac monitoring was performed in (95%) of patients, including with either a 30-day event monitor (n=15) or ILR (n=20). Two patients were found to have atrial fibrillation, and a different potential cause (PFO, large vessel disease) was detected in 3 others. Five patients were consented for the ARCADIA clinical trial.

Conclusion: A Multidisciplinary ESUS Clinic offers a patient-centered approach which may facilitate care coordination for stroke prevention and clinical trial enrollment, while providing learning opportunities for trainees.

Abstract WP231: Nutrition And Food Insecurity Among Stroke Survivors

Background: Food insecurity (FI) is a social determinant of health (SDOH) that impacts access to adequate quality food, which may result in poor nutrition and increased cardiovascular risk. In chronic disease populations, FI is associated with poor nutrition and higher vascular risk. We sought to investigate FI in stroke survivors (SS) and hypothesized that FI would be associated with inadequate fruit and vegetable (FV) intake. We also evaluated relationships between FI, FV intake, and other clinical and demographic factors.

Methods: We conducted a retrospective review of SS presenting for an initial visit to the UTHealth Stroke clinic from 1/28/21 to 7/31/21. We included SS who completed a 2-question FI screener (Hunger Vital Sign) and the Block Fruit and Vegetable (FV) Frequency screener. FI and FV scores were determined with standard techniques; FV score was dichotomized (score < 11 indicates inadequate intake - validated). Patient data were self-reported. Chi-squared, fisher’s exact, and t-tests were conducted for univariate analysis (Table).

Results: Among 383 potentially eligible SS, we included 285 who completed the FV and FI questionnaires (X age =62; 50% female). Of those, 39 (13.7%) were FI and 149 (52.3%) had inadequate FV. Among demographic and clinical factors, only race/ethnicity was associated with FI. Compared to White SS, Hispanic and Black SS had higher odds of FI (OR 3.62, 95%CI 1.19-11.03 and OR 3.24, 95% CI 1.07- 9.83, respectively). FI was not associated with inadequate FV intake. Inadequate FV intake was not associated with clinical or demographic factors; however, there were trends of better FV intake among currently employed SS and those with more than high school education.

Conclusions: We did not find associations between FI and inadequate FV intake. This suggests that there may be other SDOH that contribute to poor dietary intake in this population.

Abstract TP93: Interaction Of Ethnicity And Arrival Method On Thrombectomy Delay: The Society Of Vascular And Interventional Neurology Multicenter Collaboration

Introduction: Compared to White patients, non-White minority populations are less likely to receive acute treatment for ischemic stroke, and when they do, it can be delayed.

Hypothesis: To evaluate the interaction between arrival method (transfer vs. emergency medical services [EMS] vs. private vehicle) and race/ethnicity (non-Hispanic Black [NHB] vs. non-Hispanic White [NHW] vs. Hispanic) on door-to-arterial puncture (DTAP) time in thrombectomy.

Methods: Multicenter retrospective cohort study of consecutive patients (≥18 years) treated with endovascular thrombectomy at 14 US Comprehensive Stroke Centers (1/1/2019-07/31/2020). Door (arrival) to arterial puncture (DTAP) was evaluated using a linear mixed model to estimate the effect of race/ethnicity and arrival mode on treatment time.

Results: Of the 1,908 included patients, 356 (19%) of whom were Hispanic, stroke severity was similar between race/ethnicity groups, however Hispanic and NHB patients experienced significant delays in DTAP compared to NHWs (adjusted β Hisp = 0.32, 95%CI 0.08-0.55; β NHB = 0.23, 95%CI 0.04-0.41). In the final linear mixed model, more severe neurologic deficits were associated with shorter DTAP (β NIHSS per point -0.03, 95%CI -0.04- -0.03), and arrival via EMS or private vehicle versus transfer were associated with longer delays (β EMS = 0.57, 95%CI 0.41-0.74; β PV = 1.27, 95%CI 0.85-1.70). There was a significant interaction between Hispanic ethnicity and arrival by EMS (p=0.03) or private vehicle (p=0.04) in a direction favoring shorter treatment delays.

Conclusions: Endovascular therapy is delayed in Hispanic and NHBs when compared to NHWs. While arrival by EMS or private vehicle (vs. inter-hospital transfer) also contributed to treatment delays, Hispanic ethnicity modified this effect such that there was less delay in DTAP. This may be related to communication barriers between caregivers and healthcare providers when a patient is suddenly disabled from stroke.

Abstract TP82: Gaps In Clinical History And Diagnostic Evaluation For Young Women With Ischemic Stroke - We Need An Updated Approach

Introduction: Young women with stroke represent a unique patient population. There are a variety of sex-specific etiologies that warrant a different approach to evaluation and secondary prevention in young women. Secondary prevention begins during the acute hospitalization, thus, certain aspects of the history and evaluations may be indicated early after stroke. We describe our center’s experience with young women presenting with stroke over a 2.5-year period.

Methods: We performed a retrospective review of women between 18-45 years, identified from our stroke registry (1/2015 to 5/2018). An assessment of key variables regarding common stroke risk factors (RFs), sex-specific RFs, (pregnancy history, estrogen use, migraine, autoimmune conditions) and workup (pregnancy test, hypercoagulable states, substance use) was conducted.

Results: Of 198 women with acute ischemic stroke in our study period, medical RFs of hypertension, diabetes, hyperlipidemia, and atrial fibrillation were each ascertained for more than 98% of women. Lifestyle RFs of tobacco use and alcohol use were reported for 85.9% and 87.6%, respectively and urine drug screens were performed in 67%. Obstetric history (gravida/para) was obtained in only 19.7%, pregnancy tests were conducted in 69.2%, and hypertensive disorders of pregnancy were only reported in patients who were pregnant (2%) or post-partum (5.6%). Oral contraceptive (OCP) or hormone replacement (HRT) was reported in 6.6% and migraine with or without aura in 12.6%. Among 76 patients (38.4%) with cryptogenic stroke, obstetric history was reported in only 25%, OCP/HRT use in 5.3%, and antiphospholipid antibody syndrome was assessed in 64%.

Conclusion: The acute stroke hospitalization is a critical period for identification of stroke etiology and assessment of cardiovascular risk. There are known sex disparities in standard evaluation and management of stroke. In pre-menopausal women, gaps in care may be even greater if the history and assessment are not completed with sex-specific variables in mind. We suggest a standard approach to the history and assessment of young women. We plan to implement this approach in our patient population while tracking the impact on care.

Abstract TP206: Vascular Risk Factors And Stimulant Use Among Stroke Patients

Background: In 2019, an estimated 7.3 US million adults had used stimulants in the past year. Stimulant use is associated with increased stroke risk, yet the prevalence of common stroke risk factors (RFs) in patients who use stimulants is not well described. We sought to examine the association between stimulant use and the presence of stroke risk factors (RFs) in stroke patients.

Methods: We conducted an IRB approved retrospective review of ischemic and hemorrhagic stroke patients admitted 9/2019 through 9/2020. Inclusion criteria were age ≥18 and completion of a urine drug screen (UDS) on admission. Logistic regression was used to model the association of RFs (hypertension, type 2 diabetes (DMII), hyperlipidemia, atrial fibrillation, and coronary disease) to acute stimulant use, adjusting for socio-demographic characteristics.

Results: Among 1878 patients screened, 814 (43.3%) had a UDS. UDS was more common in younger (median age 60 vs 67), male (60.4% vs 47.6%) and Black (35.6% vs 27.5%) and Hispanic (22.0% vs 21.6%) patients. Of those with UDS, 72(8.84%) had cocaine and/or amphetamine detected and 660 (81.08%) were UDS negative. After controlling for age, sex, race, and insurance status, hypertension (OR 2.28, 95%CI 1.17-4.41) was positively associated with stimulant use while DMII was negatively associated (OR 0.39, 95%CI 0.19-0.81). Other RFs were not associated with stimulant use.

Conclusion: Despite being younger, stroke patients with stimulant-positive UDS had a higher prevalence of hypertension, a leading risk factor for recurrent stroke, than UDS-negative patients. This group may represent a high-risk population that may benefit from targeted interventions for secondary stroke prevention. Differences in screening by sex, race, and age may lead to missed opportunities for assessment of recurrent stroke risk. A standard approach to drug screening may eliminate these biases.

Abstract 115: Predictors Of Post-stroke Depression And Suicidal Ideation Among Acute Stroke Survivors

Introduction: Approximately a third of stroke survivors are diagnosed with Post-Stroke Depression (PSD) and half are more likely to commit suicide compared to the general population. The aim of this study was to examine the relationship between demographic and clinical variables and PSD and suicidal ideation among post-stroke survivors.

Methods: This was a retrospective review of a clinical registry from a comprehensive stroke center between 10/2018 and 3/2020. Patients were eligible if a Patient Health Questionnaire 9-Item (PHQ-9) was available. Question 9 of the PHQ-9 was screened for suicidal ideation.

Results: The study cohort consisted of a total of 194 patients who had an acute (primarily ischemic or intracerebral) stroke who completed a 90-day telephonic PHQ-9. The mean age (years) and NIH Stroke Scale were 64 ± 15 and 7.4 ± 7.3, respectively. The sample was comprised of 56% men, 39% Whites, 31% Blacks, 27% Asians, and 10% Hispanics. The mean PHQ-9 score was 5.9 ± 6.3. Seven percent reported suicidal ideation. Univariate analysis revealed that pre-stroke depression history and 90-day post-dicharge mRS scores were significantly associated with PHQ-9 scores (p=0.005 and p=0.003, respectively). After adjusting for age, stroke type, NIHSS arrival score, pre-morbid mRS score, mRS score at 7 days, and hospital length of stay, multiple linear regression analysis with bootstrap estimates found that pre-stroke depression and 90-day post-dicharge mRS scores remained significant (p<0.001 and p=.004, respectively; see Table 1). Although both days 7 (p=0.014) and 90 (p=0.049) mRS scores were found to be significantly different than those with and without suicidal ideation, the effect size in patients with suicidal ideation was larger for day 90 (d=.66) than for day 7 (d=.36) mRS scores.

Conclusion: Patients with a history of depression and those with higher mRS scores at 90 days should be screened for suicidal ideation and actively managed for depression.

Abstract TP88: Advance Care Planning In Stroke Survivors: A Survey Of Patient Goals And Preferences

Introduction: The AHA 2014 statement on palliative and end-of-life (EOL) care in stroke recommended patient- and family-centered care and goals of care discussions. Despite a recurrent stroke risk of up to 39% at 10 years, stroke survivors have low advance directive completion rates. We conducted a survey characterizing the advance care planning (ACP) attitudes in our population of stroke clinic patients.

Methods: We developed a survey based on validated surveys assessing ACP behaviors and engagement. The survey was provided to all TIA, ischemic and hemorrhagic stroke patients in our clinic between February and August 2021. Non-English-speaking patients and those unable to express preferences were excluded.

Results: Surveys were provided to 88 stroke survivors with a 68.2% response rate (N=60). Patient characteristics reported in Table 1. Patients were racially and ethnically diverse and 54.2% had greater than high school education. Patients were also fairly independent, most living at home (96.7%) and ambulatory (63.3%). Most patients completed the survey a median of 43 days after their first stroke (63.3%). Less than half (48.3%) of patients had designated a medical decision maker but many (63.3%) had had conversations with family/decision makers about preferences for future medical care if they were to become very sick or near the EOL. However, only 46.7% felt ready to talk with a doctor about these preferences. More than half (53.3%) of patients indicated that they would like their stroke doctor’s participation if/when they were to have such a conversation.

Conclusions: In our study group of diverse, younger and more independent stroke survivors, we found that many had had ACP conversations with surrogate decision makers and more than half wanted their stroke doctor to participate in future discussions. More work is needed to assess the generalizability of our findings and how ACP can be improved for stroke survivors who are at high risk for recurrent events.

Abstract TMP30: Disparities In Telemedicine Use Among Stroke Survivors: The Experience Of Three Tertiary Stroke Centers

Introduction: In response to the COVID-19 pandemic, outpatient stroke care delivery was rapidly transformed to telemedicine (TM) care through video (VTM) and telephone (TPH) visits around the world. We sought to evaluate the sociodemographic differences in TM use among stroke survivors.

Methods: We conducted a retrospective chart review of stroke survivors evaluated at three tertiary stroke center clinics in the early period of the pandemic, 3/16/2020 till 7/31/2020. We compared the use of TM by demographics. The association between the use of TM and race/ethnicity was measured using the relative risk (RR) from a modified Poisson regression model adjusting for age, sex, insurance status, stroke type, visit type, and site.

Results: A total of 2,024 individuals were included from UTHealth (n=878), MedStar Georgetown (n=269), and Columbia (n=877). Median age was 64 [IQR 52-74] and 53% were female. About half the patients had private insurance, 36% had Medicare and 15% had Medicaid. Two-thirds of the visits were established patients. TM accounted for 90% and the use of TM over office visits was primarily associated with site, not patients’ characteristics. Among TM users, older age, non-White, and Medicaid were associated with lower VTM compared to TPH use. Black (aRR 0.90, 95% CI 0.85-0.95, p<0.001) and Hispanic patients (aRR 0.91, 95% CI 0.86 - 0.97, p=0.005) had 10% lower VTM use while Asian patients (aRR 0.98, 95% CI 0.90 - 1.06, p=0.56) had similar VTM use compared to White patients (Figure).

Conclusions: In our diverse cohort, we found differences in TM visit type by race and insurance, with overall higher utilization among established patients. These findings suggest disparities in VTM access across different stroke populations. As VTM becomes an integral part of outpatient practice, steps to ensure equitable access are essential.

Abstract P887: Lack of Racial, Ethnic, and Sex Disparities in Ischemic Stroke Care Metrics Within a Telestroke Network

Introduction: Little is known on the impact of telestroke in addressing disparities in acute ischemic stroke care.

Methods: We conducted a retrospective review of acute ischemic stroke patients evaluated over our 17-hospital telestroke network in Texas from 2015-2018. Patients were described as Non-Hispanic White (NHW) male or female, Non-Hispanic Black (NHB) male or female, or Hispanic (HIS) male or female. Single imputation using fully conditional specification was conducted to impute missing values in NIHSS (N=103). We compared frequency of tPA and mechanical thrombectomy (MT) utilization, door-to-consultation times, door-to-tPA times, and time-to-transfer for patients who went on to MT evaluation at the hub after having been screened for suspected large vessel occlusion at the spoke.

Results: Among 3873 patients (including 1146 NHW male (30%) and 1134 NHW female (29%), 405 NHB male (10%) and 491 NHB female (13%), and 358 HIS male (9%) and 339 HIS female (9%) patients) (Table 1), we did not find any differences in door-to consultation time, door-to-tPA time, time-to-transfer, frequency of tPA administration or incidence of MT utilization (Table 1 & 2).

Conclusion: There was a lack of racial, ethnic, and sex disparities in ischemic stroke care metrics within our telestroke network. In order to fully understand how telestroke alleviates disparities in stroke care beyond our single-network review, collaboration among networks is needed to formulate a multicenter telestroke database similar to the Get-With-The Guidelines.

Abstract 48: An Updated Early Stroke Recognition Tool for the Inclusivity of Spanish-Speakers: RAPIDO

Background and Issues: Hispanics have higher stroke incidence and recurrence and are less likely to know the signs and symptoms of stroke compared to non-Hispanic Whites. Stroke awareness education promotes the recognition of the common signs and symptoms of stroke and subsequent treatment-seeking behaviors resulting in improved outcomes. Acronyms have been created to bring awareness to key stroke sign and symptom indicators; however, there are discrepancies when translating existing acronyms for Spanish-speakers.

Purpose: The purpose of this project was to create and update a stroke awareness acronym for the inclusivity of Spanish-speakers.

Methods: We searched the literature and were unable to identify translations of the commonly publicized FAST or BE-FAST acronyms into recognizable and relatable Spanish words across various dialects. Led by a Spanish-speaking nurse with experience working with stroke patients, our research team identified Spanish words that are used across various dialects for the translation of the BE-FAST acronym (balance, eyes, face, arm, speed, and time). Diverse Spanish-speaking members of our research team incorporated relatable images and reviewed the translated acronym for content and clarity.

Results: We created the acronym RAPIDO for Spanish-speakers. Similar to FAST and BE-FAST, RAPIDO illustrates warning signs and symptoms of stroke and the need to seek treatment quickly.

Conclusions: The creation of the RAPIDO acronym constitutes an important step in providing stroke awareness education to Spanish-speakers. If validated with the broader healthcare professional and lay community, adding the RAPIDO acronym to public stroke educational programs may be warranted.

Abstract P240: The Impact of Patient Demographics on the Utilization of Video vs Telephonic Care in a Telemedicine Clinic During the COVID-19 Pandemic

Background: In response to the COVID-19 pandemic, stroke outpatient care was transformed to telemedicine (TM) through video (VTM) and telephonic (TPH) visits. While TM offers potential benefits over in-person visits for stroke patients, accessibility of VTM may be limited for patients at highest risk for poor outcomes. We recommended VTM for all patients, but offered TPH visits if patients did not have adequate equipment or declined VTM. We examined whether demographic variables influenced the TM visit type completed (VTM vs TPH) for patients seen during the pandemic.

Methods: We conducted a retrospective review of charts for patients seen in our stroke clinic between 3/16/20 (fully operational TM) and 5/31/20. We determined visit type: VTM vs in-person vs TPH and abstracted demographic and clinical data. We focused on TM visits and used t-tests, Fisher’s exact tests, and chi-squared as appropriate for univariate analyses and logistic regression for multivariate analyses.

Results: Among 463 visits, 47 in-person visits were excluded, leaving 416 (328 VTM and 88 TPH). Mean age was 61.5 and by race/ethnicity: 42.9% non-Hispanic white (NHW), 36.9% non-Hispanic Black (NHB), 11.6% Hispanic, 4.3% Asian, and 4.3% other (Table 1). In univariate analyses, visit type was significantly associated with race (p = 0.024), insurance type (p=0.001), and visit type (new vs established). In adjusted analysis, NHB race was associated with 1.90 times higher odds (95% CI 1.09-3.32) of TPH vs VTM compared to NHW. Medicaid insurance was associated with 3.90 times higher odds (95% CI 1.54-9.88) of TPH vs VTM visit compared to private insurance.

Conclusions: We found that NHB patients and patients with Medicaid were less likely to complete VTM visits compared to TPH. This suggests barriers to VTM based on race and insurance type and deserves further study. If video visits are superior to TPH visits for clinical care, these barriers may widen disparities in secondary stroke prevention during the pandemic.

Abstract P881: Geospatial Analysis of Community and Patient Risk Factors for Poor Functional Outcome in Stroke

Introduction: Low neighborhood socioeconomic status has been associated with increased stroke risk, but it is not clear if this association is independent of individual socioeconomic status and clinical risk. Neighborhood racial segregation as defined by a racial isolation index (RI) has been shown to be associated with increased risk of stroke mortality. Using geospatial mapping techniques, we sought to determine the impact of neighborhood socioeconomic status and racial isolation on post-stroke functional outcome.

Methods: Using our center’s prospective stroke registry, we matched charts for ischemic stroke patients seen between 1/1/2008 and 12/31/2018 with address data obtained from our hospital EMR for geospatial mapping. Racial Isolation (RI) and Neighborhood Deprivation Index (NDI) were calculated using census data. To assess the relationship between neighborhood factors and functional outcome, we used geographically weighted regression models. We fitted univariate and multivariate multinomial logistic regression models for functional outcome, and linear regression models for the percentage of poor functional outcome (defined as mRS 4-6). Significance was determined to be p < 0.05.

Results: We included 5204 patients across 786 county census tracts. NDI (range -1.75 to 3.79) and RI (range 0 to 1) both appear to correlate visually with stroke rates of our patients across individual census tracts (Figure 1). Hypertension, diabetes, and dyslipidemia rates at individual and census tract level were significantly associated with poor functional outcome. NDI was not (OR 1.00 95% CI 0.99 - 1.00), but RI trended significant (OR 1.04 95% CI (0.99 - 1.09). Overall explanatory power was limited, warranting further investigation.

Conclusions: Patient’s individual risk factors increased likelihood of poor functional outcome, but community segregation and socioeconomic deprivation indices are not predictors of poor functional outcome.

Abstract P826: Does Telemedicine Impact Stroke Clinic Follow-Up During the Covid-19 Pandemic

Introduction: The COVID-19 pandemic has led to rapid implementation of telemedicine (TM) care in outpatient neurology clinics. Early follow-up after acute stroke hospitalization has been associated with decreased readmission and improved care transitions. Stroke survivors may face multiple barriers to in-person follow-up, including inability to drive, limited mobility, and reliance on working caregivers; therefore TM may be preferred. We sought to evaluate the impact of TM care provision during the COVID-19 pandemic on patient follow-up.

Methods: Using our clinic EMR, we included patients scheduled for stroke hospitalization follow-up in the Stroke Transitions, Education, and Prevention (STEP) clinic from 10/1/2019 till 7/31/2019. We calculated arrival rates, no-show rates, and cancellation rates for the pre-COVID time period (10/1/19 - 3/13/20) and the period following the implementation of TM services (3/17/20 - 7/31/20).

Results: We identified 593 eligible patients with 282 patients scheduled in the pre-COVID period and 311 patients in the COVID period. Arrival, cancellation, and same day no-show rates were 63.1%, 23.0%, and 12.4% in the pre-COVID period and 54.0%, 37.9%, and 7.07% in the COVID period, respectively. The arrival rate decreased significantly (p=0.03) and the cancellation rate increased significantly (p<0.001); the same day no-show rate also decreased significantly (p=0.04).

Conclusion: Despite the availability of TM services, the arrival rate for stroke patients scheduled for follow-up during the pandemic decreased significantly, largely because of cancellations. Low no-show rates do not explain the full picture of follow-up. Increased cancellations might be explained by several factors including barriers to technology, apprehension regarding TM, reliance on caregivers to participate in TM visits while practicing social distancing. Identification of barriers to TM follow-up should be further investigated to prevent the deleterious impact of poor care transitions on stroke patients.

Abstract P299: Heart Brain Clinic: Integrated Management of Ischemic Stroke

Background: About 25% of acute ischemic strokes (IS) are categorized into stroke of undetermined etiology and many ultimately have a cardiac source for stroke. Neurologists and cardiologists can improve decision making, as has been shown with other multidisciplinary clinics. We report our experience in creating our Heart Brain Clinic (HBC) with a focus on patients with patent foramen ovale (PFO).

Methods: Demographic and clinical data were collected retrospectively for patients with PFO evaluated for IS in the inpatient or outpatient setting. Patients were divided into routine care and HBC groups. We compared time from stroke to PFO closure and number of clinic visits prior to decision about closure. Nonparametric analysis was used to calculate difference between medians, while chi square test was used for categorical values.

Results: HBC began in 12/2018 with coordination of administrative and staffing efforts between neurology and cardiology departments. From 2/17 to 7/20, 73 patients were evaluated for PFO (42 routine care, 31 HBC; Table 1). At the time of data analysis, 67 patients had received recommendations about PFO closure and 52 patients underwent PFO closure. More than 50% of all patients traveled from outside Houston. HBC patients required fewer clinic visits (p=0.023) prior to decision about closure; however, in patients who underwent PFO closure, there was no difference in weeks from stroke to closure. Patients seen in HBC were recommended to not undergo closure more often than routine care (p= 0.007)

Conclusions: Our data demonstrates that a multidisciplinary, patient-centered approach to management of IS patients with PFO is feasible and may improve the quality of care in this younger patient population. The difference in recommendation to not pursue PFO closure between groups may reflect selection and referral bias. Additional work is needed to determine whether this approach improves other aspects of healthcare.

Abstract P559: Sex Differences in Clinical Outcomes After Endovascular Thrombectomy for Large Vessel Occlusion Stroke: A Sub-Analysis of the SELECT Study

Background: Women have been shown to have greater disability than men after acute ischemic stroke (AIS) treated by thrombolysis. Whether endovascular thrombectomy (EVT) outcomes differ by sex with AIS from large vessel occlusion (LVO) is controversial. We compared sex differences in EVT outcomes and assessed relationship to post-discharge improvement.

Methods: In SELECT prospective cohort, EVT treated anterior circulation LVOs (ICA, MCA M1/M2) ≤24 hrs from LKW were stratified by sex. Discharge, 90-day mRS were compared in all patients and a propensity matched cohort. We evaluated mRS improvement (discharge to 90-day) using repeated measure mixed regression with linear approximation of mRS.

Results: Of 285 patients, 139 (48.8%) were women, and older (mean IQR 69 years (57,81) vs 65 (56,75), p=0.04) with similar NIHSS (17 (11,22) vs 16 (12,20), p=0.44). Women had smaller perfusion lesion 109 (66,151) vs 154 (104,198) cc, p<0.001) and better collaterals on CTA/CTP but similar ischemic core size 8 (0,25) vs 11 (0,38) cc, p=0.22. Discharge functional independence rates, mean (IQR) mRS were similar (women 39% vs men 46%, p=0.14, and mRS: 3 vs 3, p=0.43). 90-day mRS 0-2 did not differ between women and men (50% vs 55%, aOR 0.77, 95% CI 0.39-1.50, p=0.39) and mean (IQR) mRS: 2 (1,4) vs 2 (0,4). Larger predicted mRS score improvement trend seen in men (2.62 vs 2.21, reduction 0.41) than women (2.65 vs 2.46, reduction: 0.19, p=0.21), Fig 2A. In propensity matched 65 pairs, women exhibited worse 90-day mRS 0-2 (46% vs 60%, aOR 0.41, 95% CI 0.16-1.00, p=0.05). mRS improvement from discharge to 90-day was significantly larger in men (2.49 vs 1.88, reduction 0.61 vs women 2.52 vs 2.44, reduction 0.08, p=0.04), despite similar discharge disposition Fig 2B.

Conclusion: Women had similar discharge outcomes as men following EVT, but improvement at 90 days was significantly worse in women. Further exploration of the influence of post-discharge factors to identify target interventions is warranted.

Endovascular thrombectomy in patients with large core ischemic stroke: a cost-effectiveness analysis from the SELECT study

Background

It is unknown whether endovascular thrombectomy (EVT) is cost effective in large ischemic core infarcts.

Methods

In the prospective, multicenter, cohort study of imaging selection study (SELECT), large core was defined as computed tomography (CT) ASPECTS<6 or computed tomography perfusion (CTP) ischemic core volume (rCBF<30%) ≥50 cc. A Markov model estimated costs, quality-adjusted life years (QALYs) and the incremental cost-effectiveness ratio (ICER) of EVT compared with medical management (MM) over lifetime. The willingness to pay (WTP) per QALY was set at $50 000 and $100 000 and the net monetary benefits (NMB) were calculated. Probabilistic sensitivity analysis (PSA) and cost-effectiveness acceptability curves (CEAC) for EVT were assessed in SELECT and other pivotal trials.

Results

From 361 patients enrolled in SELECT, 105 had large core on CT or CTP (EVT 62, MM 43). 19 (31%) EVT vs 6 (14%) MM patients achieved modified Rankin Scale (mRS) score 0–2 (OR 3.27, 95% CI 1.11 to 9.62, P=0.03) with a shift towards better mRS (cOR 2.12, 95% CI 1.05 to 4.31, P=0.04). Over the projected lifetime of patients presenting with large core, EVT led to incremental costs of $33 094 and a gain of 1.34 QALYs per patient, resulting in ICER of $24 665 per QALY. EVT has a higher NMB compared with MM at lower (EVT -$42 747, MM -$76 740) and upper (EVT $155 041, MM $57 134) WTP thresholds. PSA confirmed the results and CEAC showed 77% and 92% acceptability of EVT at the WTP of $50 000 and $100 000, respectively. EVT was associated with an increment of $29 225 in societal costs. The pivotal EVT trials (HERMES, DAWN, DEFUSE 3) were dominant in a sensitivity analysis at the same inputs, with societal cost-savings of $37 901, $86 164 and $22 501 and a gain of 1.62, 2.36 and 2.21 QALYs, respectively.

Conclusions

In a non-randomized prospective cohort study, EVT resulted in better outcomes in large core patients with higher QALYs, NMB and high cost-effectiveness acceptability rates at current WTP thresholds. Randomized trials are needed to confirm these results.

Clinical trial registration

NCT02446587

Call to Action: Structural Racism as a Fundamental Driver of Health Disparities: A Presidential Advisory From the American Heart Association

Structural racism has been and remains a fundamental cause of persistent health disparities in the United States. The coronavirus disease 2019 (COVID-19) pandemic and the police killings of George Floyd, Breonna Taylor, and multiple others have been reminders that structural racism persists and restricts the opportunities for long, healthy lives of Black Americans and other historically disenfranchised groups. The American Heart Association has previously published statements addressing cardiovascular and cerebrovascular risk and disparities among racial and ethnic groups in the United States, but these statements have not adequately recognized structural racism as a fundamental cause of poor health and disparities in cardiovascular disease. This presidential advisory reviews the historical context, current state, and potential solutions to address structural racism in our country. Several principles emerge from our review: racism persists; racism is experienced; and the task of dismantling racism must belong to all of society. It cannot be accomplished by affected individuals alone. The path forward requires our commitment to transforming the conditions of historically marginalized communities, improving the quality of housing and neighborhood environments of these populations, advocating for policies that eliminate inequities in access to economic opportunities, quality education, and health care, and enhancing allyship among racial and ethnic groups. Future research on racism must be accelerated and should investigate the joint effects of multiple domains of racism (structural, interpersonal, cultural, anti-Black). The American Heart Association must look internally to correct its own shortcomings and advance antiracist policies and practices regarding science, public and professional education, and advocacy. With this advisory, the American Heart Association declares its unequivocal support of antiracist principles.

Racial disparities in post-stroke functional outcomes in young patients with ischemic stroke

BACKGROUND AND PURPOSE

Recent studies show rising incidence of stroke in the young, for which risk factors are not well characterized. There is evidence of increased risk in certain racial and ethnic groups. We assessed racial differences in risk factors, stroke etiology, and outcomes among young stroke patients.

METHODS

Using data from our inpatient registry for ischemic stroke, we reviewed patients aged 18-50 who were admitted 01/2013 to 04/2018. Race/ethnicity were characterized as non-Hispanic White (NHW), non-Hispanic Black (NHB), Hispanic (HIS). For univariate comparisons Chi-square and Kruskal-Wallis tests were performed as appropriate. Multivariable logistic regression was used to assess impact of race on day seven modified Rankin score (mRS).

RESULTS

Among 810 patients with race and outcome data who were admitted in the study period, median age was 43, 57.1% were male, and 36.5% NHW, 43.2% NHB, 20.2% HIS. History of hypertension (HTN), type II diabetes (DM II), smoking, heart failure (CHF), prior stroke, and end-stage renal disease varied significantly by race. Compared to NHW, NHB had higher odds of HTN (OR 2.28, 1.65-3.15), CHF (OR 2.17, 1.06-4.46), and DM II 1.92 (1.25-2.94) while HIS had higher odds of DM II (OR 2.52, 1.55-4.10) and lower odds of smoking (OR 0.56, 0.35-0.90). Arrival NIHSS was higher in NHB, but etiology and rates of tpA treatment and thrombectomy did not vary by race. Compared to NHW patients, NHB (OR 0.50 CI (0.31-0.78)) and HIS (OR 0.37 CI (0.21-0.67)) were less likely to have good functional outcome (mRS <2) at day 7 in adjusted analyses.

CONCLUSIONS

In this study, there was a higher prevalence of several modifiable risk factors in NHB and HIS young stroke patients and early functional outcome was worse in these groups. Our study suggests a need for targeted prevention efforts for younger populations at highest risk for stroke.

Exercise-Related Acute Cardiovascular Events and Potential Deleterious Adaptations Following Long-Term Exercise Training: Placing the Risks Into Perspective-An Update: A Scientific Statement From the American Heart Association

Epidemiological and biological plausibility studies support a cause-and-effect relationship between increased levels of physical activity or cardiorespiratory fitness and reduced coronary heart disease events. These data, plus the well-documented anti-aging effects of exercise, have likely contributed to the escalating numbers of adults who have embraced the notion that "more exercise is better." As a result, worldwide participation in endurance training, competitive long distance endurance events, and high-intensity interval training has increased markedly since the previous American Heart Association statement on exercise risk. On the other hand, vigorous physical activity, particularly when performed by unfit individuals, can acutely increase the risk of sudden cardiac death and acute myocardial infarction in susceptible people. Recent studies have also shown that large exercise volumes and vigorous intensities are both associated with potential cardiac maladaptations, including accelerated coronary artery calcification, exercise-induced cardiac biomarker release, myocardial fibrosis, and atrial fibrillation. The relationship between these maladaptive responses and physical activity often forms a U- or reverse J-shaped dose-response curve. This scientific statement discusses the cardiovascular and health implications for moderate to vigorous physical activity, as well as high-volume, high-intensity exercise regimens, based on current understanding of the associated risks and benefits. The goal is to provide healthcare professionals with updated information to advise patients on appropriate preparticipation screening and the benefits and risks of physical activity or physical exertion in varied environments and during competitive events.

Abstract WMP86: Persistent Gender and Racial Disparities Among Neurology Residents and Vascular Neurology Fellows Over the Past 10 Years

Introduction: Women and minorities are underrepresented in academic medicine. There is little in the literature about gender and racial disparities among neurology or vascular neurology trainees. At the International Stroke Conference, women overall and women physicians have been underrepresented as invited speakers and abstract first authors, and there is recent momentum for improvement.

Methods: Data were collected from the Accreditation Council for Graduate Medical Education public website. Dataset included neurology resident and vascular neurology fellow gender data from 2007 to 2017 and race data from 2011 to 2017. Data were analyzed by chi-square test and one-sample proportion test.

Results: From 2007-2017, women represented 45% of all neurology trainees and only 33% of all vascular neurology fellows, both significantly lower than 50% (p<0.0001). There was no trend in the proportion of gender by year for vascular fellows (p=0.11) or neurology trainees (p=0.39). However, each year, except for 2012-2013 and 2015-2016 for vascular fellows, varied significantly by gender where men represented the largest proportion. Race varied by year for vascular fellows (p=0.03) and neurology trainees (p=0.017). Blacks and Hispanics represented the lowest proportions and Whites represented the highest proportion of both vascular and neurology trainees. When comparing Whites vs Non-Whites for both fellows (43% vs 57%; p=0.76) and residents (50% vs 50%; p=0.14), there was no trend in the proportions by year.

Conclusions: Women, Black and Hispanic physicians remain underrepresented as vascular neurology trainees. The low representation of women and underrepresented minorities has not changed in the last decade. Addressing gender and racial disparities among trainees should be a high national priority for future medical and scientific contributions from these groups.

Abstract TMP95: Structured Screening for Post-Stroke Cognitive Impairment in the Outpatient Stroke Clinic

Introduction: Cognitive impairment (CI) affects 30% of stroke survivors and impacts ability to return to work, drive and perform ADLs. However, there is no standardized screening for post-stroke CI. We implemented CI screening in the STEP (Stroke Transitions, Education and Prevention) clinic. We sought to identify demographic and clinical factors associated with early post-stroke CI.

Methods: Eligible pts had ischemic stroke, ICH or TIA, were seen in the STEP clinic from March 2017 to June 2018, and included in the prospective outpatient clinical registry. Screening for post-stroke CI was performed with a Brief Neurocognitive Screen (BNS), a validated 5-minute subset of the Montreal Cognitive Assessment. BNS 0-8 was defined as abnormal (CI present) and 9-12 was defined as normal. Continuous variables were analyzed with student t-tests or Wilcoxon rank-sum tests and categorical variables with Fisher’s exact test. Logistic regression was performed with the significant variables in the univariate analyses.

Results: Of 256 patients, 116 completed a BNS at a median of 35 days after hospital discharge. Median NIHSS was 3 (IQR 0.5,6) and follow-up modified Rankin scale (mRS) was 1 (IQR 1,2). Median BNS was 10 (IQR 9,11). Abnormal BNS, was present in 17.2% of pts screened. Of the 20 pts with abnormal BNS, 17 had neuropsychological testing ordered. In the univariate analysis, age, education, admission NIHSS, poor mRS (<2) at follow-up, and atrial fibrillation were significantly associated with early post-stroke CI (Table 1). In the multivariable analysis, only age and follow-up mRS remained significant.

Conclusion: Early post-stroke CI is common in stroke pts, even with low NIHSS, and associated with older age and worse mRS. The BNS is a post-stroke CI screening tool than can be performed in stroke clinics. Future studies are needed to assess the feasibility of implementing the BNS across multiple sites and outcomes associated with early identification of post-stroke CI.

Abstract 29: Optimization Methodologies to Enhance Endovascular Thrombectomy Access in the United States

Background: Timely access to endovascular thrombectomy (EVT) centers is vital for best stroke outcome. We map current EVT access in the US then utilize modeling to optimize it.

Methods: US designated stroke centers were mapped utilizing geo-mapping and stratified into EVT or non-EVT if they reported ≥1 thrombectomy code for acute ischemic stroke in 2017 to CMS. Direct EVT access, defined as the population with the closest facility to EVT centers, was calculated from validated trauma models adapted for stroke. Current 15 and 30 min access were described nationwide and in 4 states (TX, NY, CA, IL).

Two optimization models were utilized. Model A used a greedy algorithm to capture the largest population with direct access when flipping 10 non-EVT to EVT centers to maximize access. Model B used bypassing methodology to directly transport patients to EVT centers within 15 min from the closest non-EVT center.

Results: Of 1941 stroke centers, 714 were EVT. Approximately 99 million/32% Americans have direct EVT access within 15 min while 111 million (36.0%) within 30 minutes (Fig 1).

There were 65 (43%) EVT centers in TX with 22% current 15 min access. Flipping the top 10 population density hospitals improved access to 32%, while bypassing resulted in 46% having direct access to EVT centers (fig 2 A-B). Direct access in CA was 26% which improved to 35% with flipping and 54% by 15 min bypassing from the closest non-EVT to EVT centers. Similar results were found in NY (current 21%, flipping 39%, bypassing 50%) and IL (15%, 27% and 35%, respectively), Tab 1.

Conclusion: EVT access within 15 min is limited to less than 1/3 of the US population. Optimization methodology that increase EVT centers or bypass non-EVT to the closest EVT center both showed enhanced access. Results varied by states based on the population size and density. However, bypass showed more potential for maximizing direct EVT access. National and state efforts should focus on identifying gaps and tailoring solutions to improve EVT access.

Abstract WP468: Follow Up After Stroke, Screening and Treatment Clinic: Advancing Post-Stroke Care

Objective: To assess feasibility and replicability of a multidisciplinary, specialized clinic in optimization of secondary stroke prevention and stroke related complications.

Background: Recommendations exist for secondary stroke prevention, but it is unclear which outpatient model of care optimizes vascular risk factor control and decreases post-stroke complications most effectively. Designed after the Stroke Transitions, Education, and Prevention clinic in Houston, TX, the Follow up After Stroke, Screening and Treatment (FASST) clinic is an integrated, multidisciplinary, specialized clinic designed to optimize secondary stroke prevention. It provides post discharge stroke education and medication adherence counseling by Pharmacists, as well risk factor and complications management by Vascular Neurologists. Validated patient reported surveys screen for complications: depression, anxiety, sleep disorders, cognitive impairment, disability, social support, quality of life and functional status. Our approach and the characteristics of patients enrolled in the clinic is described.

Methods: Patients attending one FASST clinic visit are included. Institutional Board Review approved consent is obtained. Demographic and clinical data are recorded including risk factors, surveys and outcome scores. Data is entered in Redcap and analyzed through the Statistical Analysis Software (SAS) program.

Results: Of the 25 patients enrolled in the clinic, 83.3% are African American. A high prevalence of hyperlipidemia (100%) and hypertension (100%) exists, with 44% of patients having concomitant diabetes mellitus. Overall 26.7% screened positive for depression with PHQ-9, and 20% screened positive for anxiety with GAD-7. These patients were started on medications and referred for psychotherapy. Abnormal ESS scores were noted in 31.3% and directed for sleep apnea evaluation. Eighteen medical and pharmacy trainees rotated through the clinic.

Conclusion: The FASST clinic represents a reproducible model for an integrated approach to post-stroke care. Adapted to academic centers across the country, a collaborative network would provide best practices, and measure patient reported outcomes to optimize stroke care.

Abstract TP398: Comparable Internet Access And Usage Among Stroke Survivors And Informal Caregivers

Background and Purpose: Web-based interventions have shown promise as a cost-effective and convenient delivery platform for supporting chronic disease self-management. However, studies suggest that web-based interventions are not widely available. The purpose of this study was to describe access and usage of web-based electronics in a cohort of stroke survivors (SS) and their informal caregivers (IC).

Methods: A 14-question electronic usage survey was created with input from experts in neurology, nursing and bioinformatics. Two urban sites recruited participants from inpatient stroke centers, outpatient stroke clinics and stroke support groups. Surveys were completed in person or via telephone. Descriptive data were generated to evaluate internet access and usage.

Results: Data were analyzed from 251 SS and 127 IC. Participants were primarily recruited from outpatient settings, with inpatient recruits constituting 15%. Internet users were on average 8 years younger than non-users in both groups. African Americans constituted a third in each group and 1 out of 8 were Hispanic. Compared to an estimate that 89% of American adults have internet access, 200 (81%) SS (p < .001) and 123 (97%) IC (p = .005) had internet access.

Conclusions: In our diverse cohort of relatively young SS, we found IC had more internet access than SS, and more so than the general population. This study is an important step towards delineating the potential use of web-based environments as a platform for interventions to improve stroke risk factor management and stroke recovery.

Abstract 163: Recognizing Sex Disparities Among Invited Speakers at the International Stroke Conference Motivates Change

Introduction: Females were significantly underrepresented as invited speakers at the International Stroke Conference (ISC) from 2014-2018. In 2019, there were increased efforts by the ISC program committee to recruit female speakers. Other efforts to increase female participation at the 2019 ISC included a session for women’s issues in stroke and a women’s luncheon.

Methods: ISC invited speaker data were obtained (years 2014-2019) from the American Heart Association. Variables included sex, degree, race, speaker institution country, session type and category. Data were analyzed by Chi-square test, Fisher’s exact test or logistic regression models.

Results: From 2014-2018, females represented 28% of ISC invited speakers, and in 2019 the proportion of females rose to 47%. Females represented 38% of physician speakers in 2019 as compared to 18% from 2014-2018. For Black speakers, in 2019 females represented the majority (64%), increased from 2014-2018 (17%). For Hispanic speakers, females remained one of the lowest proportions, but with an increase from 12% to 39%. Females represented the highest and lowest proportion of speakers from South America (100%) and Africa (0%) and the largest in invited symposium (48%), similar to 2014-2018. The odds of being invited for debate as a female increased in 2019 (OR 0.67 vs 0.37, p=0.36), but this did not reach significance. Females represented the largest proportion of speakers in recovery and rehabilitation (52%) in 2019, similar to 2014-2018. Females had higher odds of being invited as a speaker in the acute, in-hospital care category (OR 0.83 vs 0.53, p=0.22), but this did not reach significance. Females were more often invited as speakers more than once in 2019 (OR 0.94 vs 0.61, p=0.29).

Conclusions: There is potential to increase female participation at major scientific conferences through initiatives by the program committee. Identifying gender disparities at a major conference like the ISC may help to close the gender gap.

A Retrospective Study to Identify Novel Factors Associated with Post-stroke Anxiety

BACKGROUND AND PURPOSE

Post-stroke anxiety (PSA) is common and disabling. PSA should be considered as an important outcome in stroke. However, there is a lack of understanding of factors that may be linked to PSA. The purpose of this study was to determine the frequency of PSA and sociodemographic and clinical factors associated with PSA in a cohort of racially and ethnically diverse stroke patients.

METHODS

We conducted a retrospective study of ischemic and hemorrhagic stroke patients seen in a stroke outpatient clinic from August 1, 2017 to June 30, 2018. Patients were eligible if a Generalized Anxiety Disorder 7-Item (GAD-7) instrument was available. GAD-7 scores greater than or equal to 10 indicated the presence of moderate to severe PSA. Multivariable logistic regression was used to identify independent sociodemographic and clinical factors associated with PSA.

RESULTS

Records from 289 stroke patients with a GAD-7 instrument were analyzed. PSA was common (21%; GAD-7 ≥ 10). Fifty-seven percent of females had a GAD-7 greater than or equal to 10 compared to 41% of females who had a GAD-7 less than 10 (P = .03). Multivariable analysis found that self-reported nonmarried status (odds ratio, 3.27; 95% confidence interval, 1.44-7.44), excessive fatigue (odds ratio, 4.46; 95% confidence interval, 1.87-10.63), and depression (odds ratio, 1.24; 95% confidence interval, 1.16-1.33) were independently associated with PSA.

CONCLUSIONS

PSA may occur more frequently in those who report non-married, excessive fatigue, or depression. Trials of PSA interventions should consider the potential impact of social support, depression, and comorbid conditions contributing to post-stroke fatigue, including sleep apnea.

The pleiotropy associated with de novo variants in CHD4, CNOT3, and SETD5 extends to moyamoya angiopathy

PURPOSE

Moyamoya angiopathy (MMA) is a cerebrovascular disease characterized by occlusion of large arteries, which leads to strokes starting in childhood. Twelve altered genes predispose to MMA but the majority of cases of European descent do not have an identified genetic trigger.

METHODS

Exome sequencing from 39 trios were analyzed.

RESULTS

We identified four de novo variants in three genes not previously associated with MMA: CHD4, CNOT3, and SETD5. Identification of additional rare variants in these genes in 158 unrelated MMA probands provided further support that rare pathogenic variants in CHD4 and CNOT3 predispose to MMA. Previous studies identified de novo variants in these genes in children with developmental disorders (DD), intellectual disability, and congenital heart disease.

CONCLUSION

These genes encode proteins involved in chromatin remodeling, and taken together with previously reported genes leading to MMA-like cerebrovascular occlusive disease (YY1AP1, SMARCAL1), implicate disrupted chromatin remodeling as a molecular pathway predisposing to early onset, large artery occlusive cerebrovascular disease. Furthermore, these data expand the spectrum of phenotypic pleiotropy due to alterations of CHD4, CNOT3, and SETD5 beyond DD to later onset disease in the cerebrovascular arteries and emphasize the need to assess clinical complications into adulthood for genes associated with DD.

Does care in a specialised stroke prevention clinic improve poststroke blood pressure control: a protocol for a randomised comparative effectiveness study

INTRODUCTION

Hypertension is a major risk factor for recurrent stroke, and blood pressure (BP) reduction is associated with decreased risk of stroke recurrence. However, many stroke survivors have poorly controlled BP after their initial stroke. The Stroke Transitions Education and Prevention (STEP) Clinic was established to provide a comprehensive approach to stroke risk factor reduction.

METHODS AND ANALYSIS

This randomised comparative effectiveness study was designed to assess the impact of care in the STEP clinic versus usual care on poststroke BP reduction. Eligible hospitalised patients with ischaemic stroke, haemorrhagic stroke or transient ischaemic attack are scheduled for a clinic screening visit within 4 weeks of discharge if they meet baseline inclusion criteria. At the clinic visit, patients who have uncontrolled BP, defined as automated office BP ≥135/85 mm Hg are randomised (1:1) to either the STEP clinic or usual care for management. STEP clinic patients receive instructions to self-monitor, a BP monitor, sleep apnoea screening, dietary counselling, review of BP monitoring records and adjustment of medications. Patients are followed by a neurologist and a stroke-trained nurse practitioner. Usual care participants are seen by a neurologist and recommendations for secondary prevention are sent to primary care providers. The primary outcome is the difference in mean daytime ambulatory systolic BP at 6 months, assessed using linear regression analysis. Secondary outcomes include 24 hours ambulatory BP, medication adherence and medication self-efficacy, and composite cardiovascular events.

ETHICS AND DISSEMINATION

This study was approved by the Institutional Review Boards at the McGovern Medical School at the University of Texas Health Sciences Center and the Georgetown University School of Medicine. Uninsured and Spanish-speaking patients are included in the study.

TRIAL REGISTRATION NUMBER

NCT02591394; Pre-results.

Abstract NS7: Identifying and Understanding Factors Associated with Post-Stroke Anxiety

Background and Purpose: Prior data indicate that the profile of stroke survivors differs from those with anxiety in the absence of other clinical comorbidities. The purpose of this study was to determine the prevalence of PSA and to understand factors associated with PSA in a cohort of stroke survivors.

Methods: A retrospective study (August 2017-May 2018) of electronic health records from 194 ischemic stroke survivors were examined. Stroke survivors were screened for PSA using the Generalized Anxiety Disorder 7-Item (GAD-7; range 0-21) scale two to eight weeks post-hospitalization for stroke during a stroke clinic visit. GAD-7 scores ≥ 10 indicated moderate to severe anxiety. Examples of factors examined included medical, social, stroke severity, excessive daytime sleepiness (Epworth Sleepiness Scale; ESS), and depression (Patient Health Questionnaire-9; PHQ-9). Univariable analysis were used to determine significance (p < 0.05). T-tests were used for continuous variables and the chi-square test for categorical variables.

Results: Twenty-five percent of stroke survivors had a GAD-7 score ≥ 10 and significantly higher mean ESS (11 ± 5) and PHQ-9 (13 ± 6) scores (p<.0001) indicating co-morbid symptoms. Although not significantly different in this sample size, 32% of women had a GAD-7 score ≥ 10 compared to 21% men (p = .05). Stroke survivors with moderate to severe anxiety were more likely to be single, divorced, or widowed (p = 0.0006).

Conclusions: PSA is common after ischemic stroke and may occur more frequently in women and those who are single, divorced, or widowed. Post-stroke trials of psychological interventions should consider PSA and its relationship to excessive daytime sleepiness and depression as well as treatment approaches for concurrent co-morbid conditions.

Abstract WP363: Females are Significantly Less Likely to be Invited as Speakers to the International Stroke Conference: Time’s Up to Address Sex Disparity

Introduction: Females are underrepresented as speakers at major scientific conferences. Furthermore, in neurology, males outnumber females in academic positions, rank and number of publications, which may influence this inequality.

Objective: To evaluate trends in invited speakers by sex at the International Stroke Conference (ISC).

Methods: Data were obtained (years 2014-2018) for invited speakers to the ISC from the American Heart Association. Variables included sex, degree, race, speaker institution country, and speaker category. Data were analyzed by chi-square test, Fisher’s exact test, or logistic regression.

Results: Over 5 years, 1086 individuals with 1283 presentations were invited for invited symposia (83%), pre-conference (11%), debate (5%), and case theater (1%). Females represented a mean of 29% of speakers, which did not vary by year (p=0.99), so years were combined. The highest and lowest proportions of females were in invited symposia (30.4%) and case theater (5.6%). All mid-levels and nurses, but only 17.7% of physician speakers were female. Females were 32.7% of Caucasian speakers and only 16.7% and 12.0% of Black and Hispanic speakers, respectively. The highest and lowest proportions of female speakers were from institutions in South America (50%) and Africa (0%). The proportion of female speakers was highest in nursing (86.4%) and pediatric stroke (45.2%) and lowest in neurocritical care and aneurysm (0%). Grouped, the highest proportion of female speakers was in recovery and rehabilitation (33.5%), and the lowest was in acute care (19%). Males were more likely invited as speakers more than once (p=0.01).

Conclusions: Females are less likely invited speakers to the ISC compared to males, especially in fields like critical care, with a smaller female pool. Moreover, females in underrepresented racial groups and female physicians are less often speakers. Increased efforts are warranted to improve sex differences among speakers at the ISC.

Abstract TP347: The Stroke Transitions Education and Prevention (STEP) Clinic: A Learning Healthcare Model for Post-Stroke Care

Background and Purpose: The STEP clinic was established to provide post-acute care for stroke patients. In this learning healthcare model, optimization of processes is enriched by evaluation of patient outcomes and patient and provider feedback. Trainee education and clinical trial recruitment are key. We describe the approach, patient population, and outcomes.

Methods: STEP patients are assessed by a multidisciplinary care team within 6 weeks post-hospitalization. Patients complete depression, fatigue, and sleep apnea questionnaires. The team develops a personalized treatment and follow-up plan and provides risk factor counseling and education. We obtained data from the STEP clinical registry for patients enrolled from 10/2014 to 05/2017.

Results: Among 605 enrolled patients following up at median of 47 days, 55% were male, mean age was 62.2 (SD 14.3), and stroke types included 76% ischemic/transient ischemic attack and 20% intracerebral hemorrhage. By race, 45% were non-Hispanic white, 27% non-Hispanic black, 19% Hispanic, and 3% Asian. Initial blood pressure (BP) was controlled for 66% (<140/90 mmHg) with medications adjusted for 9%. BP control was maintained at 67% among assessed patients. Of 91% completing a depression screen, 24% had at least moderate depression, and 22% were maintained or initiated on an antidepressant. Of 92% patients completing an epworth sleepiness scale, 36% scored >9 (abnormal), and 27% were sent for a sleep study. A total of 38 trainees rotated through the clinic and 91 patients were enrolled in studies. Four novel trials, 3 randomized clinical trials and 1 observational study, were derived from the clinic.

Conclusions: The STEP clinic represents a learning healthcare model for post-stroke care. Learning healthcare models for post-stroke care are feasible and may be an effective approach to secondary and tertiary prevention.

Abstract TP349: Submitted and Accepted Abstracts by Sex at the International Stroke Conference: Analysis of Trends From 2014-2018

Introduction: Males have higher numbers of publications than females across many medical specialties. Little is known about female involvement in stroke research, especially conference-related science.

Objective: To evaluate sex differences among authors of abstracts at the International Stroke Conference (ISC).

Methods: Data were obtained (2014-2018) for first authors of submitted and accepted ISC abstracts from the American Heart Association. Variables included sex, career classification, career level, institution country, abstract category and type. Data were analyzed by chi-square test, Fisher’s exact test, or logistic regression.

Results: Authors submitted 8532 abstracts (36.9% female), and 6135 abstracts were accepted (36.5% female). There was no difference in submitted abstracts by sex and year (p=0.3), so years were combined. There was no sex difference in the proportion of accepted abstracts (female vs male: 71.7% vs 73.0%, p=0.2). Nurses with accepted abstracts were most likely female (93.2%), and physicians were least likely (27.4%). By career level, the highest proportion of females with accepted abstracts was students/trainees (40.7%), and by institution continent, the highest and lowest proportions were from South America (56.7%) and Asia (19.9%). Females presented 91.5% of abstracts in nursing, 56.3% in clinical rehabilitation and recovery (next highest), and 18.0% in acute endovascular (lowest). The odds of being a female author was 1.82 (95% CI 1.62-2.05) in rehabilitation and recovery and 1.18 (95% CI 1.01-1.39) in basic science as compared to acute care. There was no sex difference in abstract presentation type (p=0.3).

Conclusions: Females are underrepresented among ISC abstract first authors, especially among physicians and for acute, in-hospital stroke research, fields in which males may be overrepresented. This suggests the need for further efforts to increase the participation of females in stroke research.

Abstract WP489: Evaluation of Post-discharge Callback Data from Stroke Patients and Caregivers

Background and Purpose: The early period after hospital discharge is a critical time for stroke patients during which transitions of care can be optimized. In our Comprehensive Stroke Center, patients are called within 3 days of discharge to conduct point of service feedback utilizing yes/no and open-ended questions related to the hospital stay, discharge instructions, follow-up care, and prescriptions. We sought to examine post-discharge feedback to identify areas of need.

Methods: A multidisciplinary team collaborated to classify callback responses for patients discharged from 1/1/2018 to 6/30/2018 within the following domains from the Hospital Consumer Assessment of Healthcare Providers and Systems survey: care from doctors, care from nurses, hospital environment, experience in the hospital, and transitions of care. We provide a descriptive analysis (Table 1).

Results: Among 700 patients discharged in the study period, 378 (54%) were discharged home and 207 (55%) of these were contacted for feedback. Eighty four (40.5%) of patients/caregivers expressed at least one concern (129 total), with the largest proportion in the transitions of care domain (67.4 %). Patients reported difficulties with prescriptions (15.5%), obtaining outpatient therapy services (13.2%) and follow-up appointments (10.9%), new or persistent clinical symptoms (8.5%), and insufficient hospital discharge education (5.4%). Approximately 5% (11/207) of all patients reported hospital readmission during the call.

Conclusions: This study reveals that stroke patients and caregivers identify transitional care as an area for improvement following discharge from a CSC. Interventions aimed at facilitating care from hospital to home after stroke are warranted, and we are implementing patient-centered initiatives to enhance the discharge process and provide additional support early after stroke discharge.

Abstract TP462: Recruitment of African Americans in Blood Pressure Reduction Trials for Secondary Stroke Prevention

Background and Purpose: Reductions in blood pressure (BP) after stroke are associated with dramatic reductions in stroke risk. African Americans (AA) have higher risk of recurrent stroke than Whites and higher rates of uncontrolled BP after stroke. Prior studies have shown under-representation of minorities in secondary prevention trials. We identified studies of BP control for secondary stroke prevention and explored minority representation in the trials.

Methods: Relevant MeSH headings were used to conduct a PubMed search of randomized trials for secondary prevention of ischemic and hemorrhagic stroke and TIA, focused on BP reduction. We included studies published 1998 to 2018 that included participants from the US. We categorized articles according to timing post stroke, stroke type, intervention type, race/ethnic distribution, and mentioned efforts to increase minority proportions.

Results: Of 703 abstracts identified from PubMed, 42 studies were retained, and 8 met criteria after manuscript review. Six were US based and 2 international. All included ischemic stroke and/ or TIA patients. None focused on hemorrhagic stroke. Six trials included behavioral modification as a component of the intervention. Enrollment period ranged from 0 to 180 days post-stroke. For US based studies, 5 reported AA race (race reporting complete for 3 studies). The proportion of AA participants ranged from 8.4% to 41.5% Three studies recruited from diverse populations. There was no specific mention of oversampling of AAs in any trial.

Conclusion: Despite strong data to support BP reduction after stroke, there is a lack of US-based studies for secondary stroke prevention. More studies of BP control interventions to test medications and behavioral strategies for secondary stroke prevention in diverse patient populations are urgently needed.

High in-hospital blood pressure variability and severe disability or death in primary intracerebral hemorrhage patients

OBJECTIVE

To quantify in-hospital systolic blood pressure variability among patients with intracerebral hemorrhage, determine the association between high systolic blood pressure variability (HSBPV) and 90-day severe disability or death, and examine the association between pre-hospital factors and HSBPV.

METHODS

Adult, radiologically confirmed, intracerebral hemorrhage patients enrolled in a multi-site cohort were included. Using a semi-automated algorithm, systolic blood pressure values recorded from routine non-invasive systolic blood pressure monitoring in critical and acute care settings were extracted for the duration of hospitalization. Inter and intra-patient systolic blood pressure variability was quantified using generalized estimating equation methods. Modified Poisson and logistic regression models were fit to determine the association between HSBPV and 90-day severe disability or death and between pre-hospital characteristics and HSBPV, respectively.

RESULTS

A total of 566 patients managed at four certified stroke centers were included. Over 120,000 systolic blood pressure readings were analyzed, and a standard deviation (SD) of 13.0 was parameterized as a cut-off point to categorize HSBPV. Patients with HSBPV had a greater risk of 90-day severe disability or death (relative risk: 1.20, 95% confidence interval: 1.04-1.39), after controlling for age, pre-morbid functional status, and other disease severity measures. Greater likelihood of in-hospital HSBPV was independently observed in elderly, female patients, and in patients with high admission systolic blood pressure.

CONCLUSION

Quantification of HSBPV is feasible utilizing routinely collected systolic blood pressure readings, and a singular cut-off parameter for systolic blood pressure variability demonstrated association with 90-day severe disability or death. Elderly, female, and patients with high admission systolic blood pressure may be more likely to demonstrate HSBPV during hospitalization.

Abstract 026: High In-Hospital Systolic Blood Pressure Variability and Poor Functional Outcomes in Primary Intracerebral Hemorrhage Patients

Introduction: High in-hospital SBP variability (HSBPV) is an emerging marker for poor outcomes among Intracerebral Hemorrhage (ICH) patients. We aimed to determine the risk of severe disability or death (SDD) at day-90 among ICH patients with HSPBV and explore pre-hospital factors associated with HSPBV.

Methods: Adult, radiologically confirmed primary ICH patients were prospectively enrolled and followed-up until day-90. All routinely collected SBP values were recorded for the inpatient stay. Inter and intra-patient SBPV was quantified using generalized estimating equations. Modified Rankin Scale (mRS) Score of 4 - 6 was defined as SDD. Poisson and logistic regression models were fit to determine the risk of day-90 SDD, and the association of pre-hospital characteristics with HSBPV.

Results: A total of 566 patients [mean age: 63.5, females 36.6% (207 of 566)] were included. Total in-hospital follow-up period was 4,908 days [median (IQR) per patient = 8.7 (3-11)]. Over 120,500 SBP readings were analyzed. Inter and intra-patient mean SBP standard deviation (SD) was 11.1 and 13.2, respectively. A SD of 13.0 was parameterized as a cut-off for HSBPV. HSBPV patients had a 17% higher adjusted risk of day-90 SDD (Relative Risk, 95% CI: 1.17, 1.02-1.35) (Table). Older age and female sex were independently associated with HSBPV after controlling for hemorrhage volume, pre-morbid mRS, and Glasgow Coma Scale (Figure).

Conclusion: Quantification of HSBPV is feasible utilizing routinely collected SBP readings. HSBPV is associated with poor outcomes. Elderly and female patients may be more likely to demonstrate HSBPV during hospitalization.

Biochemical markers of striatal desensitization in cortical-limbic hyperglutamatergic TS- & OCD-like transgenic mice

Tics and compulsions in comorbid Tourette's syndrome (TS) and obsessive-compulsive disorder (OCD) are associated with chronic hyperactivity of parallel cortico/amygdalo-striato-thalamo-cortical (CSTC) loop circuits. Comorbid TS- & OCD-like behaviors have likewise been observed in D1CT-7 mice, in which an artificial neuropotentiating transgene encoding the cAMP-elevating intracellular subunit of cholera toxin (CT) is chronically expressed selectively in somatosensory cortical & amygdalar dopamine (DA) D1 receptor-expressing neurons that activate cortico/amygdalo-striatal glutamate (GLU) output. We've now examined in D1CT-7 mice whether the chronic GLU output from their potentiated cortical/limbic CSTC subcircuit afferents associated with TS- & OCD-like behaviors elicits desensitizing neurochemical changes in the striatum (STR). Microdialysis-capillary electrophoresis and in situ hybridization reveal that the mice's chronic GLU-excited STR exhibits pharmacodynamic changes in three independently GLU-regulated measures of output neuron activation, co-excitation, and desensitization, signifying hyperactive striatal CSTC output and compensatory striatal glial and neuronal desensitization: 1) Striatal GABA, an output neurotransmitter induced by afferent GLU, is increased. 2) Striatal d-serine, a glial excitatory co-transmitter inhibited by afferent GLU, is decreased. 3) Striatal Period1 (Per1), which plays a non-circadian role in the STR as a GLU + DA D1- (cAMP-) dependent repressor thought to feedback-inhibit GLU + DA- triggered ultradian urges and motions, is transcriptionally abolished. These data imply that chronic cortical/limbic GLU excitation of the STR desensitizes its co-excitatory d-serine & DA inputs while freezing its GABA output in an active state to mediate chronic tics and compulsions - possibly in part by abolishing striatal Per1-dependent ultradian extinction of urges and motions.

Abstract 92: Endovascular Thrombectomy Access in the United States: the Current Status and an Optimization Model

Background: Endovascular therapy (EVT) is established for acute ischemic strokes (AIS) with large vessel occlusion (LVO). Timely direct access to EVT-capable centers is integral for EVT utilization and success. We describe and map current EVT access then utilize modeling to optimize it.

Methods: US designated stroke centers were identified and mapped utilizing geo-mapping. Centers were stratified into EVT or non-EVT if they reported ≥1 thrombectomy code for AIS in 2016 to Centers for Medicare and Medicaid Service. Ground and air transportation times (30, 60 and 90 min) to EVT centers were calculated from validated trauma models previously adapted for stroke. An optimization model utilizing a greedy algorithm was employed to maximize population ground access within 60 min, as the standard “golden hour” for patients. Ground transport was utilized over air given current transport practices for stroke. A second optimization was done for 30 minutes to give LVOs the best chance to be taken directly to EVT centers, increasing probability of good outcomes.

Results: 1645 stroke centers were identified (577 were EVT capable). Approximately 137 million/44%, 195 million/63%, 234 million/76% Americans had 30, 60 and 90 min EVT ground access ; leaving 37% of the population beyond 60 min driving distance to EVT centers. 172 million/56%, 268 million/87%, 296 million/96% of the Americans have air access within 30, 60 and 90 mins. 50 hospitals were identified for “flipping” from non-EVT to EVT, which improved 60 min ground access from 63% to 71% giving access to almost 20 million more Americans. 50 hospitals were flipped to improve the 30 min ground access from 44% to 49%, increasing the coverage by 15 million. Figure 1 shows the current and optimized EVT access map.

Conclusion: Only 2/3 of the US population has direct access to EVT within an hour. State and national Efforts should focus on improving access and shorten times to EVT to give patients the best chance for excellent outcome after large strokes.

Abstract TP278: Decade-Long Trends in Recanalization Therapy at a Large Regional Comprehensive Stroke Center in Texas

Introduction: Recanalization therapy (RT) is the cornerstone of acute ischemic stroke (AIS) management. We present 10-year trend in RT at our center, and explore effects of increasing telemedicine (TM) access and a Mobile Stroke Unit (MSU).

Methods: We identified suspected AIS patients between 01/01/2007-12/31/2016 from our prospectively managed registry. Patients presented directly (DP), were transferred-in (TP) from a regional referring hospital with or without TM consultation, or via the MSU. Pre-established TM/MSU period was from 01/01/2007-12/31/2011. We used logistic regression to explore temporal trends among patient groups, report odds ratios (OR) with 95% confidence intervals, and quantile regression to determine the difference in median (DIM) treatment times.

Results: We reviewed 9,464 suspected AIS cases. 44.8% were in pre-TM/MSU and 55.2% TM/MSU period. Over 10 years, the proportion of DP has significantly reduced [OR 0.84 (0.83-0.86)], whereas non-TM TP has increased [OR 1.05 (1.03-1.06)]. In TM/MSU period, the proportion of TM patients has significantly increased each year [OR 2.00 (1.85-2.16)]. Fig. 1 shows the proportional distribution. 29.3% of patients were treated with tPA; significantly higher during the TM/MSU period compared to pre-TM/MSU [(31.5% vs 21.5%, OR 1.21 (1.11 - 1.33)]. Median onset to needle time was significantly shorter for the TM/MSU period [140(99-193) vs 157(119-198), DIM -17(-10.7,-23.2)], as was the proportion of symptomatic intracranial hemorrhage (sICH) [(1.7% vs 4.2%), OR 0.40(0.25-0.64)]. With each increasing year, a significantly greater proportion of patients were discharged home after controlling for age and NIHSS [OR 1.12 (1.10-1.14)].

Conclusion: Over a decade, we saw a steady increase in proportion of tPA treated cases. With the introduction of TM and the MSU at our institution, more AIS patients received RT, with faster onset to treatment, fewer sICH complications, and improved discharge disposition.