Abstract 1122‐000022: Delays in Care for Patients with Acute Stroke During Hospitalization for Other Reasons

2021 ◽  
Vol 1 (S1) ◽  
Author(s):  
Nicholas Vigilante ◽  
Parth Patel ◽  
Prasanth Romiyo ◽  
Lauren Thau ◽  
Mark Heslin ◽  
...  
Keyword(s):  
Acute Stroke ◽  
Acute Care ◽  
Large Vessel ◽  
Large Vessel Occlusion ◽  
Single Center ◽  
Anterior Circulation ◽  
Vessel Occlusion ◽  
Symptom Recognition ◽  
Risk Patients ◽  
Recognition Imaging

Introduction : In‐hospital stroke (IHS) is defined as stroke that occurs during hospitalization for non‐stroke conditions. We aimed to understand the timing of symptom recognition for patients who experienced IHS and its impact on the care they receive. Methods : A prospective, single center registry of adult patients (9/20/19‐2/28/21) was queried for acute anterior circulation IHS. Indications for hospitalization, delays from last known well (LKW) to symptom recognition, imaging, and treatment were explored. Results : Of 928 consecutively evaluated adults with acute stroke, 85 (9%) developed an anterior circulation IHS, 39 (46%) of whom were female, with a median age of 67 years (IQR 60–76) and median NIHSS of 15 (IQR 4–22). Sixty‐eight (80%) had a >1 hour delay from last known well to symptom recognition. Two patients (2%) received IV thrombolysis, although another 38 (45%) would have been eligible if not for a delay in symptom recognition. An ICA, M1, or M2 occlusion was observed in 18 patients (21%), 7 of whom were treated at a median of 174 minutes after LKW (IQR 65–219). Compared to the 11 patients who did not undergo thrombectomy with large vessel occlusion, those who underwent thrombectomy had non‐significantly shorter delays from LKW until neuroimaging (median 85 [IQR 65‐162] vs. 216 [IQR 133‐507], p = 0.12). Conclusions : While uncommon, patients with IHS experience delays in symptom recognition and treatment, which lead to exclusion from acute care treatment such as thrombolysis and thrombectomy. Earlier detection with more frequent nursing assessments or advanced neuromonitoring devices in at‐risk patients may reduce delays in care.

scholarly journals Retrospective Validation of Prehospital Acute Stroke Severity Scale to Predict Large Vessel Occlusion in Acute Stroke Patients - Single Center study in China

2019 ◽  
Author(s):  
Xiaoli Si ◽  
Yuanjian Fang ◽  
Wenqing Xia ◽  
Tianwen Chen ◽  
Huan Huang ◽  
...  
Keyword(s):  
Acute Stroke ◽  
Predictive Value ◽  
Large Vessel ◽  
Motor Deficits ◽  
Stroke Severity ◽  
Large Vessel Occlusion ◽  
Anterior Circulation ◽  
Vessel Occlusion ◽  
Consciousness Disorder ◽  
Gaze Palsy

Abstract Background and Purpose - To date, identifying emergent large vessel occlusion (ELVO) patients in the prehospital stage is important but still challenging. We aimed to retrospectively validate a simple prehospital stroke scale——Prehospital Acute Stroke Severity (PASS) scale to identify ELVO. Methods - We retrospectively evaluated our consecutive cohort of acute ischemic stroke (AIS) who underwent CT angiography (CTA), MR angiography (MRA) or digital subtraction angiography (DSA). PASS scale was calculated based on National Institutes of Health Stroke Scale (NIHSS) items retrospectively. The comparison of diagnostic parameters between PASS scale and NIHSS scale were performed. Results - Finally, a total of 605 patients were enrolled. ELVO patients with PASS≥2 had a median NIHSS score of 14. The best predictive value of PASS≥2 showed a similar predictive value compared with NIHSS≥9. Cortical symptoms such as consciousness disorder and gaze palsy were more specific indicators for ELVO than motor deficits. Consciousness disorder was more serious in posterior circulation infarct (PIC) while gaze palsy was more common in anterior circulation infarct (AIC). Conclusions - PASS scale had both good discrimination and calibration in our retrospective cohort. It could reflect acute stroke severity well and predict ELVO in an effective and simple way. Moreover, cortical symptoms had high specificities to predict ELVO on their own.

DEVT: A randomized, controlled, multicenter trial of direct endovascular treatment versus standard bridging therapy for acute stroke patients with large vessel occlusion in the anterior circulation – Protocol

2020 ◽  
pp. 174749302092534
Author(s):  
Zhongming Qiu ◽  
Hansheng Liu ◽  
Fengli Li ◽  
Weidong Luo ◽  
Deping Wu ◽  
...  
Keyword(s):  
Endovascular Treatment ◽  
Acute Stroke ◽  
Multicenter Trial ◽  
Large Vessel ◽  
Large Vessel Occlusion ◽  
Stroke Patients ◽  
Bridging Therapy ◽  
Anterior Circulation ◽  
Vessel Occlusion ◽  
Randomized Controlled

Background Eight randomized controlled trials have consistently shown that endovascular treatment plus best medical treatment improves outcome after acute anterior proximal intracranial large vessel occlusion strokes. Whether intravenous thrombolysis prior to endovascular treatment in patients with anterior circulation, large vessel occlusion is of any additional benefits remains unclear. Objective This study compares the safety and efficacy of direct endovascular treatment versus intravenous recombinant tissue-type plasminogen activator bridging with endovascular treatment (bridging therapy) in acute stroke patients with intracranial internal carotid artery or middle cerebral artery-M1 occlusion within 4.5 h of symptom onset. Methods and design The DEVT study is a randomized, controlled, multicenter trial with blinded outcome assessment. This trial uses a five-look group-sequential non-inferiority design. Up to 194 patients in each interim analysis will be consecutively randomized to direct endovascular treatment or bridging therapy group in 1:1 ratio over three years from about 30 hospitals in China. Outcomes The primary end-point is the proportion of independent neurological function defined as modified Rankin scale score of 0 to 2 at 90 days. The primary safety measure is symptomatic intracerebral hemorrhage at 48 h and mortality at 90 days. Trial registry number ChiCTR-IOR-17013568 ( www.chictr.org.cn ).

Arterial Spin Labelling Patterns in Acute Large Vessel Occlusion Stroke

2021 ◽  
pp. 251660852110102
Author(s):  
Meena Nedunchelian ◽  
Shriram Varadharajan ◽  
S Keerthy ◽  
MA Karthikeyan ◽  
Santosh Poyyamozhi ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Acute Stroke ◽  
Arterial Spin Labelling ◽  
Large Vessel ◽  
Type I ◽  
Large Vessel Occlusion ◽  
Anterior Circulation ◽  
Vessel Occlusion ◽  
Rater Reliability ◽  
Spin Labelling

Background: Arterial spin labelling (ASL) is a noncontrast, magnetic resonance perfusion technique which can provide information about the parenchymal perfusion status and collaterals in acute stroke. Its role in the setting of large vessel occlusion (LVO) is underutilized due to the limited availability of magnetic resonance imaging (MRI) in the emergency settings. However, it might serve as an useful adjunct to other perfusion modalities in future. Objective: To study ASL perfusion patterns in anterior circulation LVO stroke and evaluate the presence of arterial transit artefacts (ATA) as a surrogate marker of collaterals. Methods: We performed a retrospective analysis of our mechanical thrombectomy database over the last 2 years for acute stroke cases in which ASL perfusion as part of MRI was performed. ASL perfusion patterns in acute LVO stroke were reviewed, with respect to presence of ATA and diffusion-weighted imaging (DWI)-ASL mismatch. Inter-rater reliability was analyzed between 2 readers of varying experience. Baseline variables were analyzed between those with and without ATA. Results: Out of 95 patients, 78 had anterior circulation occlusions, among which 27 had ASL. Type I (with ATAs) was seen in 11 patients and all of these had DWI mismatch. Type II (without ATAs) was seen in 16 patients. Of these, 15 had mismatch with DWI and only 1 had no mismatch. Inter-rater reliability for the detection of ATA on ASL was substantial (Cohen’s k—0.64). No statistical significance was noted between ATA and clinical outcomes. Conclusion: ASL patterns vary amongst patients with LVO stroke and can be classified based on the presence of ATA since resulting DWI mismatch actually indicates a pseudo-perfusion deficit.

scholarly journals Learning Curve for Endovascular Treatment of Anterior Circulation Large Vessel Occlusion at a Single Center

2021 ◽  
Vol 11 ◽  
Author(s):  
Qiankun Cai ◽  
Yuyou Zhu ◽  
Xianjun Huang ◽  
Lulu Xiao ◽  
Mengmeng Gu ◽  
...  
Keyword(s):  
Learning Curve ◽  
Endovascular Treatment ◽  
Functional Independence ◽  
Large Vessel ◽  
Cusum Chart ◽  
Large Vessel Occlusion ◽  
Single Center ◽  
Anterior Circulation ◽  
Vessel Occlusion ◽  
Curve Effect

Background and purpose: Data concerning the learning curve for endovascular treatment (EVT) of anterior circulation large vessel occlusion are scarce. This study aimed to investigate the relationship between operator experience and the outcome of EVT and to further identify the number of cases needed to acquire the ability to perform successful reperfusion.Materials and methods: Four hundred and thirty-four patients who underwent EVT by seven operators at a single center from January 2016 to September 2019 were enrolled. Procedural experience was defined by the number of cases performed by each operator. Multivariable backward regression analyses were used to investigate the association between procedural experience and functional independence (defined as a modified Rankin Scale score of 0–2), 90-days mortality, successful reperfusion (defined as a modified Thrombolysis in Cerebral Infarction score of 2b-3), and puncture-to-reperfusion time after adjusting for covariates. A risk-adjusted cumulative sum (RA-CUSUM) chart was utilized to identify the number of caseloads needed to overcome the learning curve effect.Results: Procedural experience was independently associated with functional independence, 90-days mortality, successful reperfusion, and puncture-to-reperfusion time reduction (per 10-case increment: OR 1.219, 95% CI: 1.079–1.383, P < 0.001; OR 0.847, 95% CI: 0.738–0.968, P = 0.016; OR 1.553, 95% CI: 1.332–1.830, P < 0.001 and β 8.087 min, 95% CI: 6.184–9.991, P < 0.001, respectively). The RA-CUSUM chart indicated that at least 29 cases were required to overcome the learning curve effect.Conclusions: There was a dose-response relationship between operator case volume and clinical outcome, procedure time, and successful reperfusion. The experience needed for successful EVT was at least 29 cases.

scholarly journals Mechanical Thrombectomy for Acute Stroke Due to Large-Vessel Occlusion Presenting With Mild Symptoms

2021 ◽  
Vol 12 ◽  
Author(s):  
Feifeng Liu ◽  
Hao Shen ◽  
Chen Chen ◽  
Huan Bao ◽  
Lian Zuo ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Acute Stroke ◽  
Mechanical Thrombectomy ◽  
Multivariate Logistic Regression Analysis ◽  
Functional Independence ◽  
Large Vessel ◽  
Large Vessel Occlusion ◽  
Multivariate Logistic Regression ◽  
Anterior Circulation ◽  
Vessel Occlusion

Purpose: To evaluate the safety and efficacy of mechanical thrombectomy (MT) for acute stroke due to large vessel occlusion (LVO), presenting with mild symptoms.Methods: A prospective cohort study of patients with mild ischemic stroke and LVO was conducted. Patients were divided into two groups: MT group or best medical management (MM) group. Propensity score matching (PSM) was conducted to reduce the confounding bias between the groups. The primary outcome was functional independence at 90 days. The safety outcome was symptomatic intracranial hemorrhage (sICH). Univariate and multivariate logistic regression analyses were used to identify the independent factors associated with outcomes.Results: Among the 105 included patients, 43 were in the MT group and 62 in the MM group. Forty-three pairs of patients were generated after PSM. There were no significant differences in sICH rates between two groups (p = 1.000). The MT group had a higher proportion of independent outcomes (83.7% MT vs. 67.4% MM; OR 2.483; 95% CI 0.886–6.959; p = 0.079) and excellent outcomes (76.7% MT vs. 51.2% MM; OR 3.150; 95% CI 1.247–7.954; p = 0.013) compared to the MM group, especially in patients with stroke of the anterior circulation (p < 0.05). Multivariate logistic regression analysis showed that small infarct core volume (p = 0.015) and MT treatment (p = 0.013) were independently associated with excellent outcomes.Conclusions: Our results suggest that MT in stroke patients, presenting with mild symptoms, due to acute LVO in the anterior circulation may be associated with satisfactory clinical outcomes.Clinical Trial Registration:ClinicalTrials.gov, identifier: NCT04526756.

Effect of balloon guide catheter on clinical outcomes and reperfusion in Trevo thrombectomy

2019 ◽  
Vol 11 (9) ◽  
pp. 861-865 ◽  
Author(s):  
Thanh N Nguyen ◽  
Alicia C Castonguay ◽  
Raul G Nogueira ◽  
Diogo C Haussen ◽  
Joey D English ◽  
...  
Keyword(s):  
Clinical Outcome ◽  
Acute Stroke ◽  
Stent Retriever ◽  
Large Vessel ◽  
Large Vessel Occlusion ◽  
Stroke Patients ◽  
Good Clinical Outcome ◽  
Anterior Circulation ◽  
Vessel Occlusion ◽  
Guide Catheter

IntroductionThe Solitaire stent retriever registry showed improved reperfusion, faster procedure times, and better outcome in acute stroke patients with large vessel occlusion treated with a balloon guide catheter (BGC) and Solitaire stent retriever compared with a conventional guide catheter. The goal of this study was to evaluate whether use of a BGC with the Trevo stent retriever improves outcomes compared with a conventional guide catheter.MethodsThe TRACK registry recruited 23 sites to submit demographic, clinical, and site adjudicated angiographic and outcome data on consecutive patients treated with the Trevo stent retriever. BGC use was at the discretion of the physician.Results536 anterior circulation patients (of whom 279 (52.1%) had BGC placement) were included in this analysis. Baseline characteristics were notable for younger patients in the BGC group (65.4±15.3 vs 68.1±13.6, P=0.03) and lower rate of hypertension (72% vs 79%, P=0.06). Mean time from symptom onset to groin puncture was longer in the BGC group (357 vs 319 min, P=0.06).Thrombolysis in Cerebral Infarction 2b/3 scores were higher in the BGC cohort (84% vs 75.5%, P=0.01). There was no difference in reperfusion time, first pass effect, number of passes, or rescue therapy. Good clinical outcome at 3 months was superior in patients with BGC (57% vs 40%; P=0.0004) with a lower mortality rate (13% vs 23%, P=0.008). Multivariate analysis demonstrated that BGC use was an independent predictor of good clinical outcome (OR 2; 95% CI 1.3 to 3.1, P=0.001).ConclusionsIn acute stroke patients presenting with anterior circulation large vessel occlusion, use of a BGC with the Trevo stent retriever resulted in improved reperfusion, improved clinical outcome, and lower mortality.

scholarly journals Diagnostic value of transcranial ultrasonography for selecting subjects with large vessel occlusion: a systematic review

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Daria Antipova ◽  
Leila Eadie ◽  
Ashish Stephen Macaden ◽  
Philip Wilson
Keyword(s):  
Systematic Review ◽  
Diagnostic Accuracy ◽  
Acute Stroke ◽  
Clinical Assessment ◽  
Assessment Tools ◽  
Large Vessel ◽  
Cochrane Library ◽  
Direct Transfer ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion

Abstract Introduction A number of pre-hospital clinical assessment tools have been developed to triage subjects with acute stroke due to large vessel occlusion (LVO) to a specialised endovascular centre, but their false negative rates remain high leading to inappropriate and costly emergency transfers. Transcranial ultrasonography may represent a valuable pre-hospital tool for selecting patients with LVO who could benefit from rapid transfer to a dedicated centre. Methods Diagnostic accuracy of transcranial ultrasonography in acute stroke was subjected to systematic review. Medline, Embase, PubMed, Scopus, and The Cochrane Library were searched. Published articles reporting diagnostic accuracy of transcranial ultrasonography in comparison to a reference imaging method were selected. Studies reporting estimates of diagnostic accuracy were included in the meta-analysis. Results Twenty-seven published articles were selected for the systematic review. Transcranial Doppler findings, such as absent or diminished blood flow signal in a major cerebral artery and asymmetry index ≥ 21% were shown to be suggestive of LVO. It demonstrated sensitivity ranging from 68 to 100% and specificity of 78–99% for detecting acute steno-occlusive lesions. Area under the receiver operating characteristics curve was 0.91. Transcranial ultrasonography can also detect haemorrhagic foci, however, its application is largely restricted by lesion location. Conclusions Transcranial ultrasonography might potentially be used for the selection of subjects with acute LVO, to help streamline patient care and allow direct transfer to specialised endovascular centres. It can also assist in detecting haemorrhagic lesions in some cases, however, its applicability here is largely restricted. Additional research should optimize the scanning technique. Further work is required to demonstrate whether this diagnostic approach, possibly combined with clinical assessment, could be used at the pre-hospital stage to justify direct transfer to a regional thrombectomy centre in suitable cases.

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