scholarly journals Prior Stroke and Age Predict Acute Ischemic Stroke Among Hospitalized COVID-19 Patients: A Derivation and Validation Study

2021 ◽  
Vol 12 ◽  
Author(s):  
Teng J. Peng ◽  
Adam S. Jasne ◽  
Michael Simonov ◽  
Safa Abdelhakim ◽  
Gbambele Kone ◽  
...  
Keyword(s):  
New York ◽  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Control Cohort ◽  
Neurologic Symptom ◽  
Logistic Regression Models ◽  
Derivation Cohort ◽  
Younger Age ◽  
History Of ◽  
Prior Stroke

Objectives: Our objective was to identify characteristics associated with having an acute ischemic stroke (AIS) among hospitalized COVID-19 patients and the subset of these patients with a neurologic symptom.Materials and Methods: Our derivation cohort consisted of COVID-19 patients admitted to Yale-New Haven Health between January 3, 2020 and August 28, 2020 with and without AIS. We also studied a sub-cohort of hospitalized COVID-19 patients demonstrating a neurologic symptom with and without an AIS. Demographic, clinical, and laboratory results were compared between AIS and non-AIS patients in the full COVID-19 cohort and in the sub-cohort of COVID-19 patients with a neurologic symptom. Multivariable logistic regression models were built to predict ischemic stroke risk in these two COVID-19 cohorts. These 2 models were externally validated in COVID-19 patients hospitalized at a major health system in New York. We then compared the distribution of the resulting predictors in a non-COVID ischemic stroke control cohort.Results: A total of 1,827 patients were included in the derivation cohort (AIS N = 44; no AIS N = 1,783). Among all hospitalized COVID-19 patients, history of prior stroke and platelet count ≥ 200 × 1,000/μL at hospital presentation were independent predictors of AIS (derivation AUC 0.89, validation AUC 0.82), irrespective of COVID-19 severity. Among hospitalized COVID-19 patients with a neurologic symptom (N = 827), the risk of AIS was significantly higher among patients with a history of prior stroke and age <60 (derivation AUC 0.83, validation AUC 0.81). Notably, in a non-COVID ischemic stroke control cohort (N = 168), AIS patients were significantly older and less likely to have had a prior stroke, demonstrating the uniqueness of AIS patients with COVID-19.Conclusions: Hospitalized COVID-19 patients who demonstrate a neurologic symptom and have either a history of prior stroke or are of younger age are at higher risk of ischemic stroke.

High Risk Features Contributing to 30-Day Readmission After Acute Ischemic Stroke: A Single Center Retrospective Case-Control Study

2021 ◽  
pp. 194187442110277
Author(s):  
Emma M. Loebel ◽  
Mary Rojas ◽  
Danielle Wheelwright ◽  
Connor Mensching ◽  
Laura K. Stein
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Case Control Study ◽  
Case Control ◽  
Retrospective Case ◽  
Medical Comorbidities ◽  
Care Plans ◽  
History Of ◽  
Prior Stroke ◽  
Control Study

Background and Purpose: Risk of 30-day stroke readmission has been attributed to medical comorbidities, stroke severity, and hospitalization metrics. The leading etiologies appear to vary across institutions and remain a moving target. We hypothesized that patients with increased medical complexity have higher odds of 30-day readmission and the immediate time after discharge may be most vulnerable. We aimed to characterize patients with 30-day readmission after acute ischemic stroke (IS) and identify predictors of post-IS readmission. Methods: We performed a retrospective case-control study analyzing post-IS 30-day readmission between January 2016-December 2019 using data from Mount Sinai Hospital’s Get With The Guidelines database. We performed chi square analyses and multivariate adjusted logistic regression model including age, sex, coronary artery disease (CAD), renal insufficiency (RI), history of prior stroke or TIA, length of stay (LOS) > 7, and NIHSS ≥ 5. Results: 6.7% (n = 115) of 1,706 IS encounters had 30-day readmission. The 115 cases were compared to 1,591 controls without 30-day readmission. In our adjusted model, CAD (OR = 1.7, p = 0.01), history of prior stroke or TIA (OR = 1.6, p = 0.01), LOS >7 (OR = 1.7, p = 0.02), and NIHSS ≥ 5 (OR = 4.5, p < 0.001) predicted 30-day readmission. 65% (n = 75) of readmitted patients had readmission within 14 days post-discharge. Conclusions: Patients with post-IS 30-day readmission were more likely to have complex medical comorbidities and history of stroke or TIA compared to controls. Patients with more severe stroke and longer LOS may benefit from individualized transition of care plans and closer follow up during the vulnerable 30-day post-stroke period.

Abstract 1122‐000237: Prior Vascular Risk Factors Affecting Presentation Time and Utilization of Acute Ischemic Stroke Therapies

2021 ◽  
Vol 1 (S1) ◽  
Author(s):  
Jude H Charles ◽  
Mario P Zamora ◽  
Dileep R Yavagal
Keyword(s):  
Risk Factors ◽  
High School ◽  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Vascular Risk Factors ◽  
Vascular Risk ◽  
Grade School ◽  
Stroke Therapy ◽  
History Of ◽  
Prior Stroke

Introduction : Multiple factors have been reported to influence the time between onset of symptoms in acute ischemic stroke and hospital presentation. Although education level is one independent factor in presentation, as we previously reported, health literacy has not been fully assessed regarding specific patient knowledge on stroke or its known risk factors. This study aims to determine whether having a history of vascular risk factors such as prior stroke, coronary artery disease (CAD), or atrial fibrillation (AF) influence presentation time and acute ischemic stroke therapy utilization. Methods : This study included 250 acute ischemic stroke patients presenting to a large academic community hospital from February to December 2018. Educational level was defined within four categories: Grade School, High School, College or Higher, and Unknown. Last seen normal, symptom onset, and arrival times were acquired. Vascular risk factors chosen for this study included prior stroke, CAD, and AF. History of vascular risk factors was verified by medical documentation showing prior diagnosis by physician. Initial NIH Stroke Scale score, stroke location, vessel involved, LDL, hemoglobin A1c, gender, and race were also obtained. Patients were categorized based on their level of education, the presence or absence of vascular risk factors, and utilization of tPA or thrombectomy (MT). The primary outcomes were onset‐to‐arrival time (OTA), in minutes, and utilization rates of acute ischemic stroke therapies (either tPA, MT, or both). Subgroup analysis was conducted to associate education level with each vascular risk factor, comparing OTA and acute ischemic stroke therapy utilization rate. Results : As previously reported, educational level was inversely associated with OTA and positively associated with utilization of at least one acute ischemic stroke therapy. Prior stroke, CAD, and AF showed a substantial OTA decrease for all education groups except for College. Prior stroke decreased OTA in Grade School by 24% (764 vs. 579); High School by 30% (222 vs. 154) and College by 20% (52 vs. 41). CAD decreased OTA in Grade School by 65% (734 vs. 253), High School by 14% (209 vs. 180), and College by 3% (50 vs 49). AF decreased OTA in Grade School by 88% (764 vs. 91) and High School by 56% (216 vs. 95), but increased in College by 35% (47 vs. 64). History of prior stroke decreased utilization of both tPA and MT by 14%; CAD increased tPA use by 8% and MT by 5%; while AF increased tPA use by 9% and MT by 12%. Conclusions : Having at least one prior vascular risk factor (prior stroke, CAD, AF), diagnosed by a physician, was associated with lower OTA in Grade School and High School educated patients. A history of prior stroke was associated with lower acute stroke therapy utilization (tpa and MT), while both CAD and AF were associated with increased acute stroke therapy utilization.

High Risk of One-year Stroke Recurrence in Patients with Younger Age and Prior History of Ischemic Stroke

2019 ◽  
Vol 16 (3) ◽  
pp. 250-257 ◽  
Author(s):  
Jiann-Der Lee ◽  
Ya-Han Hu ◽  
Meng Lee ◽  
Yen-Chu Huang ◽  
Ya-Wen Kuo ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Ischemic Stroke ◽  
Multivariate Logistic Regression Analysis ◽  
Stroke Recurrence ◽  
Prior History ◽  
Multivariate Logistic Regression ◽  
Cart Analysis ◽  
Younger Age ◽  
History Of ◽  
One Year

Background and Purpose: Recurrent ischemic strokes increase the risk of disability and mortality. The role of conventional risk factors in recurrent strokes may change due to increased awareness of prevention strategies. The aim of this study was to explore the potential risk factors besides conventional ones which may help to affect the advances in future preventive concepts associated with one-year stroke recurrence (OSR). Methods: We analyzed 6,632 adult patients with ischemic stroke. Differences in clinical characteristics between patients with and without OSR were analyzed using multivariate logistic regression and classification and regression tree (CART) analyses. Results: Among the study population, 525 patients (7.9%) had OSR. Multivariate logistic regression analysis revealed that male sex (OR 1.243, 95% CI 1.025 – 1.506), age (OR 1.015, 95% CI 1.007 - 1.023), and a prior history of ischemic stroke (OR 1.331, 95% CI 1.096 – 1.615) were major factors associated with OSR. CART analysis further identified age and a prior history of ischemic stroke were important factors for OSR when classified the patients into three subgroups (with risks of OSR of 8.8%, 3.8%, and 12.5% for patients aged > 57.5 years, ≤ 57.5 years/with no prior history of ischemic stroke, and ≤ 57.5 years/with a prior history of ischemic stroke, respectively). Conclusions: Male sex, age, and a prior history of ischemic stroke could increase the risk of OSR by multivariate logistic regression analysis, and CART analysis further demonstrated that patients with a younger age (≤ 57.5 years) and a prior history of ischemic stroke had the highest risk of OSR.

Abstract 2825: History of Cancer Predicts Mortality After Acute Endovascular Treatment for Ischemic Stroke

Stroke ◽  
2012 ◽  
Vol 43 (suppl_1) ◽  
Author(s):  
Karl Meisel ◽  
Mahesh Jayaraman ◽  
Jonathan Grossberg ◽  
Anthony Kim
Keyword(s):  
Ischemic Stroke ◽  
Endovascular Treatment ◽  
Acute Ischemic Stroke ◽  
Endovascular Therapy ◽  
Hospice Care ◽  
Exploratory Analysis ◽  
Endovascular Intervention ◽  
Consecutive Series ◽  
History Of ◽  
History Of Cancer

Introduction: Endovascular treatment is an emerging therapy for acute ischemic stroke. There is no clear consensus about how best to select patients that may benefit from intervention. We conducted an exploratory analysis of clinical risk factors to predict mortality after endovascular intervention in order to better understand how to improve outcomes for patients with acute ischemic stroke. Methods: We identified consecutive series of patients treated with endovascular therapy for acute ischemic stroke at two academic hospitals between 2005 to 2010. Key clinical data elements and clinical outcomes at the time of discharge were abstracted from medical records. We evaluated univariate and multivariable associations using logistic regression and compared mean NIH Stroke Scale between those with and without a history of cancer using the t-test. Results: We identified 88 patients who received endovascular intervention with intra-arterial tissue plasminogen activator (t-PA) and/or mechanical thrombectomy. The mean age of the cohort was 68.2 (SD 16.6) and 44 (55%) were female. A total of 23 (26.1%) patients died during the index hospitalization or were discharged to hospice care. A history of cancer was documented in 20 (22.7%) patients. A history of cancer was associated with a 3.2-fold (95% CI 1.1-9.1) higher odds of mortality. This association persisted after adjusting for age greater than 80 years and hypertension (OR of 4.0, 95% CI 1.3-12). The average NIH Stroke Scale was 15.6 in those with cancer compared to 14.6 without (p=0.53). A history of cancer was not associated with parenchymal hemorrhagic transformation (OR 1.2, 95% CI 0.3-4.9), IV tPA (OR 0.5, 95% CI 0.1-2.3), a TIMI score of 2b or 3 (OR 0.5, 95% CI 0.2-1.3), or an internal carotid artery occlusion (OR 1.7, 95% CI 0.5-5.1). Conclusions: In an exploratory analysis of consecutive patients with acute ischemic stroke treated with endovascular therapy, a history of cancer was strongly associated with significantly increased odds of mortality. One possible explanation could be that patients with cancer may have earlier withdrawal of care but the reasons for this observed association are unclear. Further investigation is necessary to verify and explain the reasons for this observation in order to improve outcomes for acute ischemic stroke patients.

Abstract TP201: The Relationship Between Chronic Kidney Diseases and the Presence of Cerebral Small Vessel Disease in Patients With Acute Ischemic Stroke

Stroke ◽  
2017 ◽  
Vol 48 (suppl_1) ◽  
Author(s):  
Kana Ueki ◽  
Asako Nakamura ◽  
Masahiro Yasaka ◽  
Takahiro Kuwashiro ◽  
Seiji Gotoh ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
White Matter ◽  
Acute Ischemic Stroke ◽  
White Matter Lesion ◽  
Kidney Diseases ◽  
Univariate Analysis ◽  
Small Vessel ◽  
Chronic Kidney Diseases ◽  
History Of ◽  
The Relationship

Introduction: Cerebral small vessel diseases (SVDs) i.e. white matter lesion and cerebral microbleeds (CMBs) are related to the patients with stroke more deeply than those without. In general population, in addition to age, hypertension, diabetes chronic kidney diseases (CKD) is well known to be related to SVDs, but it remains unclear in patients with stroke. We investigated the relationship between CKD and the presence of SVDs in patients with acute ischemic stroke. Methods: We enrolled 493 patients with acute ischemic stroke patients or transient ischemic attack patients (mean age 71; 60% male) who had undergone 1.5T MR imaging within a week of the index events from April 2013 to march 2015. We evaluated kidney function by estimated glomerular filtration rate (eGFR) with the modification of diet in Renal Disease. CKD was defined as an eGFR less than 60mil/min/1.73m 2 . CMBs were defined as focal areas of very low signal intensity smaller than 10mm. White matter lesion as Periventricular hyper intensity (PVH)>grade 2 and Deep and Subcortical White Matter Hyper intensity (DSWMH)> grade 2 were defied as advanced PVH and advanced DSWMH, respectively. We investigated relationship between CKD and CMBs, advanced PVH and advanced DSWMH using a logistic regression analysis. Results: We noted CMBs in 173 patients (35%), PVH in 81 (16%), and DSWMH in 151 (31%). An univariate analysis revealed that the age, CKD, history of stroke, and antiplatelet agents were associated with presence of CMBs, advanced PVH and severe DSWMH . The multivariate analysis revealed that CMBs, advanced PVH and advanced DSWMH were associated with age (CMBs: odds ratio(OR) ; 1.32 ; 95% confidence interval(CI), 1.10-1.60, p=0.004, advanced PVH : OR ; 3.00 ; 95% CI, 2.17-4.26, p<0.01, advanced DSWMH: OR ; 1.94; 95% CI, 1.56-2.45, p<0.01 ), history of stroke(CMBs : OR ; 2.01 ; 95% CI, 1.21-3.34, p=0.007, advanced PVH : OR ; 2.25 ; 95% CI, 1.18-4.27, p=0.01, advanced DSWMH: OR ; 1.78 ; 95% CI, 1.03-3.06, p=0.038). CKD was associated with CMBs (OR ; 1.62 ; 95% CI, 1.04-2.52, p=0.03), but PVH and DSWMH were not. Conclusions: It seems that age and history of stroke are related to CMBs, advanced PVH and advanced DSWMH, and that CKD is associates with CMBs but not with either advanced PVH or advanced DSWMH.

Abstract 1122‐000214: Clinical Factors Associated rTPA Administration in Acute Ischemic Stroke Patients with History of Atrial Fibrillation

2021 ◽  
Vol 1 (S1) ◽  
Author(s):  
Chase A Rathfoot ◽  
Camron Edressi ◽  
Carolyn B Sanders ◽  
Krista Knisely ◽  
Nicolas Poupore ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Medical History ◽  
Clinical Decision Making ◽  
Past Medical History ◽  
Clinical Factors ◽  
Stroke Patients ◽  
Factors Associated ◽  
History Of

Introduction : Previous research into the administration of rTPA therapy in acute ischemic stroke patients has largely focused on the general population, however the comorbid clinical factors held by stroke patients are important factors in clinical decision making. One such comorbid condition is Atrial Fibrillation. The purpose of this study is to determine the clinical factors associated with the administration of rtPA in Acute Ischemic Stroke (AIS) patients specifically with a past medical history of Atrial Fibrillation (AFib). Methods : The data for this analysis was collected at a regional stroke center from January 2010 to June 2016 in Greenville, SC. It was then analyzed retrospectively using a multivariate logistic regression to identify factors significantly associated with the inclusion or exclusion receiving rtPA therapy in the AIS/AFib patient population. This inclusion or exclusion is presented as an Odds Ratio and all data was analyzed using IBM SPSS. Results : A total of 158 patients with Atrial Fibrillation who had Acute Ischemic Strokes were identified. For the 158 patients, the clinical factors associated with receiving rtPA therapy were a Previous TIA event (OR = 12.155, 95% CI, 1.125‐131.294, P < 0.040), the administration of Antihypertensive medication before admission (OR = 7.157, 95% CI, 1.071‐47.837, P < 0.042), the administration of Diabetic medication before admission (OR = 13.058, 95% CI, 2.004‐85.105, P < 0.007), and serum LDL level (OR = 1.023, 95% CI, 1.004‐1.042, P < 0.16). Factors associated with not receiving rtPA therapy included a past medical history of Depression (OR = 0.012, 95% CI, 0.000‐0.401, P < 0.013) or Obesity (OR = 0.131, 95% CI, 0.034‐0.507, P < 0.003), Direct Admission to the Neurology Floor (OR = 0.179, 95% CI, 0.050‐0.639, P < 0.008), serum Lipid level (OR = 0.544, 95% CI, 0.381‐0.984, P < 0.044), and Diastolic Blood Pressure (OR = 0.896, 95% CI, 0.848‐0.946, P < 0.001). Conclusions : The results of this study demonstrate that there are significant associations between several clinical risk factors, patient lab values, and hospital admission factors in the administration of rTPA therapy to AIS patients with a past medical history of Atrial Fibrillation. Further research is recommended to determine the extent and reasoning behind of these associations as well as their impact on the clinical course for AIS/AFib patients.

Abstract MP86: Effects of Immediate Blood Pressure Reduction on Death and Major Disability in Acute Ischemic Stroke Patients by History of Hypertension and Use of Antihypertensive Medications

Circulation ◽  
2015 ◽  
Vol 131 (suppl_1) ◽  
Author(s):  
Tan Xu ◽  
Yonghong Zhang ◽  
Yingxian Sun ◽  
Chung-Shiuan Chen ◽  
Jing Chen ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Treatment Group ◽  
Acute Ischemic Stroke ◽  
Hospital Discharge ◽  
Odds Ratio ◽  
Recurrent Stroke ◽  
Stroke Patients ◽  
Antihypertensive Medications ◽  
History Of

Introduction: The effects of blood pressure (BP) reduction on clinical outcomes among acute stroke patient remain uncertain. Hypothesis: We tested the effects of immediate BP reduction on death and major disability at 14 days or hospital discharge and 3-month follow-up in acute ischemic stroke patients with and without a previous history of hypertension or use of antihypertensive medications. Methods: The China Antihypertensive Trial in Acute Ischemic Stroke (CATIS) randomly assigned patients with ischemic stroke within 48 hours of onset and elevated systolic BP (SBP) to receive antihypertensive treatment (N=2,038) or to discontinue all antihypertensive medications (N=2,033) during hospitalization. Randomization was stratified by participating hospitals and use of antihypertensive medications. Study outcomes were assessed at 14 days or hospital discharge and 3-month post-treatment follow-up. The primary outcome was death and major disability (modified Rankin Scale score≥3), and secondary outcomes included recurrent stroke and vascular events. Results: Mean SBP was reduced 12.7% in the treatment group and 7.2% in the control group within 24 hours after randomization (P<0.001). Mean SBP was 137.3 mmHg in the treatment group and 146.5 in the control group at day 7 after randomization (P<0.001). At 14 days or hospital discharge, the primary and secondary outcomes were not significantly different between the treatment and control groups by subgroups. At the 3-month follow-up, recurrent stroke was significantly reduced in the antihypertensive treatment group among patients with a history of hypertension (odds ratio 0.43, 95% CI 0.24-0.75, P=0.003) and among patients with a history of use of antihypertensive medications (odds ratio 0.41, 95% CI 0.20-0.84, P=0.01). All-cause mortality (odds ratio 2.84, 95% CI 1.11-7.27, P=0.03) was increased among patients without a history of hypertension. Conclusion: Immediate BP reduction lowers recurrent stroke among acute ischemic stroke patients with a previous history of hypertension or use of antihypertensive medications at 3 months. On the other hand, BP reduction increases all-cause mortality among patients without a history of hypertension.

Abstract 3372: The Ratio Of Apolipoprotein B-100 And A-i And Risk Of Intracranial Artery Stenosis In Acute Ischemic Stroke

Stroke ◽  
2012 ◽  
Vol 43 (suppl_1) ◽  
Author(s):  
Hyun-Ji Cho ◽  
Yong Jae Kim
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Reference Group ◽  
Previous History ◽  
Density Lipoprotein ◽  
Intracranial Artery ◽  
Intracranial Artery Stenosis ◽  
History Of ◽  
Statin Medication ◽  
Hs Crp

Background and Object: Intracranial artery stenosis (ICAS) is a common cause of acute ischemic stroke and has characteristics of poor prognosis and high recurrence. The role of plasma lipid level as risk factors for ICAS, still has controversy. So we investigated the relationship between the levels of the major lipids, apolipoproteins (Apo), lipoprotein (LP) and ICAS in acute ischemic stroke patients. Method: We assessed the clinical data of 881 consecutive patients from the stroke registry who were admitted due to TIA or acute ischemic stroke between November 2007 and January 2011. The major lipid levels [total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C)], the levels of Apo B100, Apo A-I and lipoprotein A [Lp (a)] and the level of high sensitivity C reactive protein (Hs-CRP) and were measured within three days after admission. The arterial segments were classified as normal, < 50 % stenosis or ≥ 50% stenosis on magnetic resonance angiography. ICAS was defined when at least one artery had ≥ 50% stenosis. Results: Of the total 881 patients, ICAS was found in 422 patients (31.0%, mean age: 66.17 ± 11.79 year old, males: 307), and 460 (55.7%) patients without ICAS were analyzed as a reference group. Compared with the reference group, the patients with ICAS were older (P < 0.001) and they had a greater prevalence of hyperlipidemia (p=0.002), a previous history of stroke (P =0.004) and no statin medication history (P < 0.001). The serum concentration of Hs-CRP was significantly higher in the patients with ICAS. (P < 0.001) The level of TC, LDL-C, HDL-C, Apo B100, Apo A-I, ratio of Apo B100/A-I and Lp (a) showed no significant difference between the two groups. But with adjustment of age, hypertension, diabetes mellitus, smoking, a previous history of stroke and statin medication, the ratio of Apo B100/ Apo A-I was significant for ICAS, (p=0.010) and was also the level of Hs- CRP (P=0.023). The odds ratios (ORs) for the presence of ICAS for those patients in the top, second, third quartiles were 2.054 (95% CI, 1.218-3.464), 1.721(95% CI, 1.033-2.868), and 1.667(95% CI, 1.008-2.757) sequentially for the ratio of Apo B100/ Apo A-I . Conclusions: Our study showed that the ratio of Apo B100/ Apo A-I was independently associated with presence of ICAS.

Abstract P686: Ischemic Stroke in Reversible Cerebral Vasoconstriction Syndrome

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Aayushi Garg ◽  
Amjad Elmashala ◽  
Santiago Ortega
Keyword(s):  
Risk Factors ◽  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Survey Design ◽  
Inpatient Rehabilitation ◽  
Reversible Cerebral Vasoconstriction Syndrome ◽  
Hospital Charges ◽  
Multivariable Logistic Regression Analysis ◽  
Cerebral Vasoconstriction ◽  
History Of

Introduction: Ischemic stroke is the cause for major morbidity and mortality in reversible cerebral vasoconstriction syndrome (RCVS). While there is evidence to suggest that ischemic stroke in RCVS is associated with proximal vasoconstriction, it is still unclear why some patients develop ischemic lesions. The aim of this study was to evaluate the risk factors and outcomes of ischemic stroke in RCVS. Methods: We utilized the Nationwide Readmissions Database 2016-2017 to identify all hospitalizations with the discharge diagnosis of RCVS. Occurrence of acute ischemic stroke was identified. Hospitalizations with the diagnosis of hemorrhagic stroke were excluded. Survey design methods were used to generate national estimates. Independent predictors of ischemic stroke were analyzed using multivariable logistic regression analysis with results expressed as odds ratio (OR) and 95% confidence intervals (CI). Results: Among the total 1,065 hospitalizations for RCVS during the study period (mean±SD age: 49.0±16.7 years, female 69.7%), 267 (25.1%) had occurrence of acute ischemic stroke. Patients with ischemic stroke were more likely to have history of hypertension (OR 2.33, 95% CI 1.51-3.60), diabetes (OR 1.81, 95% CI 1.11-2.98), and tobacco use (OR 1.64, 95% CI 1.16-2.33) and less likely to have a history of migraine (OR 0.56, 95% CI 0.35-0.90). Patients with stroke were more likely to develop cerebral edema. They also had longer hospital stay, higher hospital charges, and lower likelihood of being discharged to home or inpatient rehabilitation facility. They had higher in-hospital mortality rate, the difference was however not statistically significant. Conclusion: In conclusion, ischemic stroke affects nearly 25% of patients with RCVS and is associated with an increased rate of other neurologic complications and worse functional outcomes. Patients with traditional cerebrovascular risk factors might have a higher predisposition for developing the ischemic lesions.

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