scholarly journals Brain Connectivity Measures Improve Modeling of Functional Outcome After Acute Ischemic Stroke

Stroke ◽  
2019 ◽  
Vol 50 (10) ◽  
pp. 2761-2767 ◽  
Author(s):  
Sofia Ira Ktena ◽  
Markus D. Schirmer ◽  
Mark R. Etherton ◽  
Anne-Katrin Giese ◽  
Carissa Tuozzo ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Functional Outcome ◽  
Brain Connectivity

scholarly journals Brain connectivity measures improve modeling of functional outcome after acute ischemic stroke

2019 ◽  
Author(s):  
Sofia Ira Ktena ◽  
Markus D. Schirmer ◽  
Mark R. Etherton ◽  
Anne-Katrin Giese ◽  
Carissa Tuozzo ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Functional Outcome ◽  
Brain Function ◽  
Brain Connectivity ◽  
High Capacity ◽  
Lesion Volume ◽  
Characteristic Path Length ◽  
Post Stroke ◽  
The Impact

AbstractBackgroundThe ability to model long-term functional outcomes after acute ischemic stroke (AIS) represents a major clinical challenge. One approach to potentially improve prediction modeling involves the analysis of connectomics. The field of connectomics represents the brain’s connectivity as a graph, whose topological properties have helped uncover underlying mechanisms of brain function in health and disease. Specifically, we assessed the impact of stroke lesions on rich club (RC) organization, a high capacity backbone system of brain function.MethodsIn a hospital-based cohort of 41 AIS patients, we investigated the effect of acute infarcts on the brain’s pre-stroke RC backbone and post-stroke functional connectomes with respect to post-stroke outcome. Functional connectomes were created utilizing three anatomical atlases and characteristic path-length (L) was calculated for each connectome. The number of RC regions (NRC) affected were manually determined using each patient’s diffusion weighted image (DWI). We investigated differences inLwith respect to outcome (modified Rankin Scale score (mRS); 90-days; poor: mRS>2) and the National Institutes of Health Stroke Scale (NIHSS; early: 2-5 days; late: 90-day follow-up). Furthermore, we assessed the effect of including NRCandLin ‘outcome’ models, using linear regression and assessing the explained variance (R2).ResultsOf 41 patients (mean age (range): 70 (45-89) years), 61% were male. There were differences inLbetween patients with good and poor outcome (mRS). Including NRC in the backward selection models of outcome, R2increased between 1.3- and 2.6-fold beyond that of traditional markers (age and acute lesion volume) for NIHSS and mRS.ConclusionIn this proof-of-concept study, we showed that information on network topology can be leveraged to improve modeling of post-stroke functional outcome. Future studies are warranted to validate this approach in larger prospective studies of outcome prediction in stroke.

scholarly journals Study of Short Latency Somatosensory and Brain Stem Auditory Evoked Potentials Patients with Acute Ischemic Stroke Involving Middle Cerebral Artery Territory

2021 ◽  
Author(s):  
Abhishek Miryala ◽  
Mahendra Javali ◽  
Anish Mehta ◽  
Pradeep R. ◽  
Purushottam Acharya ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Evoked Potentials ◽  
Middle Cerebral Artery ◽  
Acute Ischemic Stroke ◽  
Brain Stem ◽  
Functional Outcome ◽  
Cerebral Artery ◽  
Negative Correlation ◽  
Auditory Evoked Potentials ◽  
Positive Correlation

Abstract Background The precise timings of evoked potentials in evaluating the functional outcome of stroke have remained indistinct. Few studies in the Indian context have studied the outcome of early prognosis of stroke utilizing evoked potentials. Objective The aim of this study was to determine somatosensory evoked potentials (SSEPs) and brain stem auditory evoked potentials (BAEPs), their timing and abnormalities in acute ischemic stroke involving the middle cerebral artery (MCA) territory and to correlate SSEP and BAEP with the functional outcome (National Institutes of Health Stroke Scale (NIHSS), modified Rankin scale (mRS) and Barthel’s index) at 3 months. Methods MCA territory involved acute ischemic stroke patients (n = 30) presenting consecutively to the hospital within 3 days of symptoms onset were included. Details about clinical symptoms, neurological examination, treatment, NIHSS score, mRS scores were collected at the time of admission. All patients underwent imaging of the brain and were subjected to SSEP and BAEP on two occasions, first at 1 to 3 days and second at 4 to 7 days from the onset of stroke. At 3 months of follow-up, NIHSS, mRS, and Barthel’s index were recorded. Results P37 and N20 amplitude had a strong negative correlation (at 1–3 and 4–7 days) with NIHSS at admission, NIHSS at 3 months, mRS at admission, and mRS at 3 months and a significant positive correlation with Barthel’s index (p < 0.0001). BAEP wave V had a negative correlation (at 1–3 and 4–7 days) with NIHSS at admission, NIHSS at 3 months, mRS at admission, and mRS at 3 months and a positive correlation with Barthel’s index (p < 0.0001). Conclusion SSEP abnormalities recorded on days 4 to 7 from onset of stroke are more significant than those recorded within 1 to 3 days of onset of stroke; hence, the timing of 4 to 7 days after stroke onset can be considered as better for predicting functional outcome.

scholarly journals Eosinophil-to-monocyte ratio is a potential biomarker in the prediction of functional outcome among patients with acute ischemic stroke

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Shuhong Yu ◽  
Yi Luo ◽  
Tan Zhang ◽  
Chenrong Huang ◽  
Yu Fu ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Functional Outcome ◽  
Odds Ratio ◽  
Poor Outcome ◽  
Net Reclassification Improvement ◽  
Potential Biomarker ◽  
The Impact ◽  
The Relationship ◽  
Integrated Discrimination Improvement

Abstract Background It has been shown that eosinophils are decreased and monocytes are elevated in patients with acute ischemic stroke (AIS), but the impact of eosinophil-to-monocyte ratio (EMR) on clinical outcomes among AIS patients remains unclear. We aimed to determine the relationship between EMR on admission and 3-month poor functional outcome in AIS patients. Methods A total of 521 consecutive patients admitted to our hospital within 24 h after onset of AIS were prospectively enrolled and categorized in terms of quartiles of EMR on admission between August 2016 and September 2018. The endpoint was the poor outcome defined as modified Rankin Scale score of 3 to 6 at month 3 after admission. Results As EMR decreased, the risk of poor outcome increased (p < 0.001). Logistic regression analysis revealed that EMR was independently associated with poor outcome after adjusting potential confounders (odds ratio, 0.09; 95% CI 0.03–0.34; p = 0.0003), which is consistent with the result of EMR (quartile) as a categorical variable (odds ratio, 0.23; 95% CI 0.10–0.52; ptrend < 0.0001). A non-linear relationship was detected between EMR and poor outcome, whose point was 0.28. Subgroup analyses further confirmed these associations. The addition of EMR to conventional risk factors improved the predictive power for poor outcome (net reclassification improvement: 2.61%, p = 0.382; integrated discrimination improvement: 2.41%, p < 0.001). Conclusions EMR on admission was independently correlated with poor outcome in AIS patients, suggesting that EMR may be a potential prognostic biomarker for AIS.

Neopterin as a Predictor of Functional Outcome and Mortality in Chinese Patients with Acute Ischemic Stroke

2015 ◽  
Vol 53 (6) ◽  
pp. 3939-3947 ◽  
Author(s):  
Xianwei Zeng ◽  
Guoqing Zhang ◽  
Bin Yang ◽  
Bo Zhang ◽  
Linpeng Zhang ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Functional Outcome ◽  
Chinese Patients

Pre-Stroke Cholinesterase Inhibitor Treatment Is Beneficially Associated with Functional Outcome in Patients with Acute Ischemic Stroke and Pre-Stroke Dementia: The Fukuoka Stroke Registry

2021 ◽  
pp. 1-7
Author(s):  
Yoshinobu Wakisaka ◽  
Ryu Matsuo ◽  
Kuniyuki Nakamura ◽  
Tetsuro Ago ◽  
Masahiro Kamouchi ◽  
...  
Keyword(s):  
Cohort Study ◽  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Functional Outcome ◽  
Neurological Deterioration ◽  
Stroke Outcome ◽  
Matched Cohort ◽  
Poor Functional Outcome ◽  
Stroke Registry ◽  
Chei Treatment

Introduction: Pre-stroke dementia is significantly associated with poor stroke outcome. Cholinesterase inhibitors (ChEIs) might reduce the risk of stroke in patients with dementia. However, the association between pre-stroke ChEI treatment and stroke outcome remains unresolved. Therefore, we aimed to determine this association in patients with acute ischemic stroke and pre-stroke dementia. Methods: We enrolled 805 patients with pre-stroke dementia among 13,167 with ischemic stroke within 7 days of onset who were registered in the Fukuoka Stroke Registry between June 2007 and May 2019 and were independent in basic activities of daily living (ADLs) before admission. Primary and secondary study outcomes were poor functional outcome (modified Rankin Scale [mRS] score: 3–6) at 3 months after stroke onset and neurological deterioration (≥2-point increase in the NIH Stroke Scale [NIHSS] during hospitalization), respectively. Logistic regression analysis was used to evaluate associations between pre-stroke ChEI treatment and study outcomes. To improve covariate imbalance, we further conducted a propensity score (PS)-matched cohort study. Results: Among the participants, 212 (26.3%) had pre-stroke ChEI treatment. Treatment was negatively associated with poor functional outcome (odds ratio: 0.68 [95% confidence interval: 0.46–0.99]) and neurological deterioration (0.52 [0.31–0.88]) after adjusting for potential confounding factors. In the PS-matched cohort study, the same trends were observed between pre-stroke ChEI treatment and poor functional outcome (0.61 [0.40–0.92]) and between the treatment and neurological deterioration (0.47 [0.25–0.86]). Conclusions: Our findings suggest that pre-stroke ChEI treatment is associated with reduced risks for poor functional outcome and neurological deterioration after acute ischemic stroke in patients with pre-stroke dementia who are independent in basic ADLs before the onset of stroke.

scholarly journals Associations of Ischemic Lesion Volume With Functional Outcome in Patients With Acute Ischemic Stroke

Stroke ◽  
2017 ◽  
Vol 48 (5) ◽  
pp. 1233-1240 ◽  
Author(s):  
Amber Bucker ◽  
Anna M. Boers ◽  
Joseph C.J. Bot ◽  
Olvert A. Berkhemer ◽  
Hester F. Lingsma ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Functional Outcome ◽  
Lesion Volume ◽  
Ischemic Lesion

Abstract W MP24: Modified Tibi (Thrombolysis in Brain Ischemia) Grading System for Assessment of Abnormal Residual Flow at Site of Intracranial Occlusion in Acute Ischemic Stroke

Stroke ◽  
2014 ◽  
Vol 45 (suppl_1) ◽  
Author(s):  
Aftab Ahmad ◽  
Vijay K Sharma ◽  
Ghazala Basir ◽  
Khurshid Khan ◽  
Andrei V Alexandrov ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Functional Outcome ◽  
Brain Ischemia ◽  
High Probability ◽  
Arterial Occlusion ◽  
P Value ◽  
Grading System ◽  
Mean Flow ◽  
Diastolic Flow

Background and purpose: The intracranial blood flow at the site of arterial occlusion in acute ischemic stroke can be measured with Transracial Doppler (TCD) using the Thrombolysis in Brain Ischemia (TIBI) grading system. The TIBI ranges from 0 to 5, where 0 no flow and 5 normal flow. Our study’s aim is to modify the TIBI grading system in order to make it simple to implement in an acute stroke setting. METHODS: We classified Modified TIBI grading as: Grade 0- no flow, Grade 1- Bad flow: there is systolic flow but no diastolic flow or systolic flow with delayed acceleration and diastolic flow, Grade 2-Good flow: normal upstroke systolic flow and diastolic flow with decreased mean flow velocity compared to contralateral vessel by 30 %. We used the clotbust database to evaluate the modified TIBI scoring system. Poor long-term outcome was defined as modified rankin scale (MRS) score > 2. RESULTS: Total of 369 patients with acute ischemic stroke and intracranial arterial occlusion received IV r TPA. Median age was 71 years (IQ range: 58.7-79), Sex: women: 170(46.1%). Median NIHSS was 16 (IQ range: 12.7-2), 17/98 (17.3%) patients with modified TIBI 0, 73/205(35.6%) with modified TIBI 1 and 31/66( 47%) with modified TIBI 2 had achieved complete recanalization ( p value=0001). The multiple logistic regression model revealed Baseline higher NIHSS, systolic BP, glucose and modified TIBI grade 0 were independent negative predictor of complete recanalization. Patients with modified TIBI 3 had high probability of complete recanalization compared to TIBI 0(OR 3.14, CI 95%: 1.4-6.8, P=0.004).Poor outcome at 3 months (MRS>2) was found in 46/75(61.3%) patients with modified TIBI 0, 94/170(55.3%) with modified TIBI 1 and 19/38(33.3%) with modified TIBI 2(P value <0.004). On logistic model age, baseline NIHSS, glucose and TIBI 0 were independent negative predictors of good outcome.Although statistically insignificant but patients with modified TIBI 3 had a trend towards high probability of good functional outcome (OR: 1.73, CI 95%:0.73-4.12, p=0.20). CONCLUSION: Modified TIBI grading system is simplified version of TIBI grading and is easy to understand and apply clinically. It also predicts reliably the recanalization and functional outcome.

Abstract WP7: Leukoaraiosis And Outcomes After Intra-arterial Therapy In Acute Ischemic Stroke

Stroke ◽  
2013 ◽  
Vol 44 (suppl_1) ◽  
Author(s):  
Dan-Victor V Giurgiutiu ◽  
Albert J Yoo ◽  
Kaitlin Fitzpatrick ◽  
Zeshan Chaudhry ◽  
Lee H Schwamm ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Functional Outcome ◽  
Univariate Analysis ◽  
Multivariable Analysis ◽  
Artery Occlusion ◽  
Post Stroke ◽  
Good Functional Outcome ◽  
Grade 3 ◽  
Risk Of Hemorrhage

Background: Selecting patients most likely to benefit (MLTB) from intra-arterial therapy (IAT) is essential to assure favorable outcomes after intervention for acute ischemic stroke (AIS). Leukoaraiosis (LA) has been linked to infarct growth, risk of hemorrhage after IV rt-PA, and poor post-stroke outcomes. We investigated whether LA severity is associated with AIS outcomes after IAT. Methods: We analyzed consecutive AIS subjects from our institutional GWTG-Stroke database enrolled between 01/01/2007-06/30/2009, who met our pre-specified criteria for MLTB: CTA and MRI within 6 hours from last known well, NIHSS score ≥8, baseline DWI volume (DWIv) ≤ 100 cc, and proximal artery occlusion and were treated with IAT. LA volume (LAv) was assessed on FLAIR using validated, semi-automated protocols. We analyzed CTA to assess collateral grade; post-IAT angiogram for recanalization status (TICI score ≥2B); and the 24-hour CT for symptomatic ICH (sICH). Logistic regression was used to determine independent predictors of good functional outcome (mRS≤ 2) and mortality at 90 days post-stroke. Results: There were 48 AIS subjects in this analysis (mean age 69.2, SD±13.8; 55% male; median LAv 4cc, IQR 2.2-8.8cc; median NIHSS 15, IQR 13-19; median DWIv 15.4cc, IQR 9.2-20.3cc). Of these, 34 (72%) received IV rt-PA; 3 (6%) had sICH; 21 (44.7%) recanalized; and 23 (50%) had collateral grade ≥3. At 90 days, 15/48 (36.6%) were deceased and 15/48 had mRS≤ 2. In univariate analysis, recanalization (OR 6.2, 95%CI 1.5-25.5), NIHSS (OR 0.8 per point, 95%CI 0.64-0.95), age (OR 0.95 per yr, 95%CI 0.89-0.99) were associated with good outcome, whereas age (OR 1.1, 95%CI 1.01-1.14) and HTN (OR 5.6, 95%CI 1.04-29.8) were associated with mortality. In multivariable analysis including age, NIHSS, recanalization, collateral grade, and LAv, only recanalization independently predicted good functional outcome (OR 21.3, 95%CI 2.3-199.9) and reduced mortality (OR 0.15, 95%CI 0.02-1.12) after IAT. Conclusions: LA severity is not associated with poor outcome in patients selected MLTB for IAT. Among AIS patients considered likely to benefit from IAT, only recanalization independently predicted good functional outcome and decreased mortality.

scholarly journals Association of body mass index with mortality and functional outcome after acute ischemic stroke

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Weiping Sun ◽  
Yining Huang ◽  
Ying Xian ◽  
Sainan Zhu ◽  
Zhirong Jia ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Functional Outcome ◽  
Body Mass
Sign in / Sign up

Export Citation Format

Share Document