scholarly journals Compressed Sensing Algorithm-Based Magnetic Resonance Imaging Guided for Prognosis of Early Neurological Deterioration after Intravenous Thrombolysis in Ischemic Stroke Patients

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Yiwei Huang ◽  
Xiaoyun Sun ◽  
Yinping Yao ◽  
Yejun Chen ◽  
Yan Chen ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Risk Factors ◽  
Univariate Analysis ◽  
Intravenous Thrombolysis ◽  
Neurological Deterioration ◽  
Resonance Imaging ◽  
Blood Cell Count ◽  
Nihss Score ◽  
Early Neurological Deterioration ◽  
Watershed Infarction

This work was aimed to study the risk factors and prognostic treatment for acute ischemic stroke (AIS) patients with early neurological deterioration (END) after intravenous thrombolytic therapy via compressed sensing algorithm-based magnetic resonance imaging (CS-MRI). 231 patients who were diagnosed with AIS were selected, and the final involved number of patients was 182. Patients with AIS were treated with intravenous thrombolysis with alteplase within 4.5 hours of onset. After treatment, patients with early neurological deterioration were defined as the deteriorating group and those without early neurological impairment were defined as the nondeteriorating group. In univariate analysis, hypertension, white blood cell count, and National Institutes of Health Stroke Scale (NIHSS) score were correlated with the occurrence of END. Under the CS-MRI theory, the two groups of patients were evaluated for middle cerebral artery basal ganglia infarction and internal watershed infarction. After univariate analysis, the P < 0.1 variables were taken as the independent variable, and the binary logistic regression model was adopted for multivariate regression analysis. It was disclosed that NIHSS score was not correlated with the occurrence of early neurological function deterioration, while homocysteine was. Hypertension, white blood cell count, homocysteine, and NIHSS score were risk factors for END. The image analysis revealed that the incidence of deteriorating basal ganglia infarction group was lower relative to the nondeteriorating group, and the incidence of watershed infarction was higher in the deteriorating group versus the nondeteriorating group. The image analysis suggested that predicting the occurrence of END through risk factors can actively provide endovascular treatment for patients with AIS.

scholarly journals Clinical and radiological factors predict unexplained early neurological deterioration after intravenous thrombolysis in patients with acute middle cerebral artery stroke

2019 ◽  
Author(s):  
Yiping Ding ◽  
Tong Sun ◽  
Yue Lu ◽  
Shuangjiao Huang ◽  
Shanshan Diao ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Univariate Analysis ◽  
Intravenous Thrombolysis ◽  
Neurological Deterioration ◽  
Nihss Score ◽  
Early Neurological Deterioration ◽  
Middle Cerebral Artery Stroke ◽  
Proximal Occlusion ◽  
Multimodal Ct

Abstract Background Some patients with acute middle cerebral artery stroke (MCA-stroke) cannot benefit from thrombolysis and develop early neurological deterioration (END) within 24 hours. Except for several defenitive causes such as symptomatic intracerebral hemorrhage, malignant edema, and early recurrent stroke, no definitive mechanism (unexplained END) account for majority of END cases deserving our attention. Methods We retrospectively collected 142 MCA-stroke patients who had pretreatment multimodal CT including non-contrast CT (NCCT), CT angiography (CTA) and CT perfusion (CTP) and received intravenous thrombolytic therapy within 4.5h of onset and. Unexplained END was denited as NIHSS scores increased from baseline within 24 hours after thrombolysis ≥ 4 points or death without definite causes. The clinical and imaging data based on multimodal CT were compared between unexplained END and no END through univariate and multivariate regression analyses. Results The prevalence of unexplained END (24 patients, 16.9%) outnumbered the prevalence of END due to other causes. Univariate analysis showed that higher admission glucose (P= 0.039), lower initial NIHSS score (P=0.026), lower r-LMC score (P= 0.003), proximal occlusion (P=0.003) and large penumbra volume(P<0.001) were more frequently observed in patients with unexplained END; In multivariate analysis, lower NIHSS score (OR=1.19; 95% CI, 1.07-1.32; P=0.001), proximal occlusion (OR=0.32; 95% CI, 0.06-0.92; P=0.038), lower r-LMC score (OR=1.17; 95% CI, 1.02-1.35; P=0.028) and larger penumbra volume (OR=0.98; 95% CI, 0.96-0.99; P=0.003) were associated with unexplained END. Conclusion Lower NIHSS score, proximal occlusion, lower r-LMC score and larger penumbra volume can predict unexplained END in the hyperacute phase of MCA-stroke and contribute to develop treatment strategies.

Factors associated with symptomatic intracranial haemorrhage after intravenous thrombolysis in severe white matter lesions: a retrospective analysis

2021 ◽  
pp. postgradmedj-2021-140886
Author(s):  
Yu Shen ◽  
DeFu Li ◽  
BoJi Tang ◽  
Qian Cao ◽  
Zhuo Hou ◽  
...  
Keyword(s):  
Risk Factors ◽  
White Matter ◽  
Retrospective Analysis ◽  
Univariate Analysis ◽  
Multivariate Logistic Regression Analysis ◽  
Intravenous Thrombolysis ◽  
White Matter Lesions ◽  
Cerebral Haemorrhage ◽  
Distribution Width ◽  
Nihss Score

Background and purposeWhite matter lesions (WMLs) are thought to cause damage to the blood–brain barrier, thereby aggravating bleeding after intravenous thrombolysis. However, the risk factors for symptomatic cerebral haemorrhage after thrombolysis are still unclear. This study explored the risk factors for bleeding in patients with severe WMLs after intravenous thrombolysis to prevent bleeding as soon as possible.MethodsA large single-centre observational study conducted a retrospective analysis of intravenous thrombolysis in patients with severe WMLs from January 2018 to March 2021. According to whether symptomatic cerebral haemorrhage occurred, the patients were divided into two groups, and then statistical analysis was performed.ResultsAfter a retrospective analysis of the data of nearly 1000 patients with intravenous thrombolysis and excluding invalid information, 146 patients were included, of which 23 (15.8%) patients had symptomatic cerebral haemorrhage. Univariate analysis showed that a history of hypertension (20% vs 4.9%, p=0.024), hyperlipidaemia (38.7% vs 9.6%, p<0.001), the National Institutes of Health Stroke Scale (NIHSS) score before thrombolysis (median 17 vs 6, p<0.001), low-density lipoprotein levels (median 2.98 vs 2.44, p=0.011), cholesterol levels (mean 4.74 vs 4.22, p=0.033), platelet count (median 161 vs 191, p=0.031), platelet distribution width (median 15.2 vs 12.1, p=0.001) and sodium ion levels (median 139.81 vs 138.67, p=0.043) were significantly associated with symptomatic cerebral haemorrhage. Further multivariate logistic regression analysis showed that hyperlipidaemia (OR=9.069; 95% CI 2.57 to 32.07; p=0.001) and the NIHSS score before thrombolysis (OR=1.33; 95% CI 1.16 to 1.52; p<0.001) were comprehensive risk factors for symptomatic cerebral haemorrhage.ConclusionHyperlipidaemia and the NIHSS score before thrombolysis are independent risk factors for bleeding after intravenous thrombolysis in patients with severe WMLs. Delaying the onset of white matter and preventing risk factors for bleeding will help improve the prognosis of cerebral infarction and reduce mortality. These risk factors need to be further evaluated in future studies.

scholarly journals Diagnosis of Early Neurological Deterioration after Intravenous Thrombolysis for Patients with Cerebral Ischemic Stroke Using Compressed Sensing-Magnetic Resonance Imaging Algorithm

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Junjun Wang ◽  
Benxiao Wang ◽  
Yongliang Tang ◽  
Hui Yan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Compressed Sensing ◽  
Intravenous Thrombolysis ◽  
Control Group ◽  
Great Vessel ◽  
Resonance Imaging ◽  
Early Neurological Deterioration ◽  
Cerebral Ischemic Stroke ◽  
Cerebral Ischemic ◽  
Deterioration Group

This study was to explore the risk factors and prognosis of early neurological deterioration (END) after intravenous thrombolysis in patients with cerebral ischemic stroke (CIS) with the guidance of magnetic resonance imaging (MRI) under the compressed sensing-MRI (CSMRI) algorithm. 187 patients with CIS in the hospital were selected and grouped into a deterioration group and a control group according to whether they had END. The CSMRI algorithm was constructed and compared with digital television (DTV) algorithm and Bayesian compressed sensing (BCS) algorithm. It was found that the reconstruction time of CSMRI algorithm in platform I (1134.9 s) and platform II (2615.8 s) was visibly lower than that of DTV algorithm (2634.6 s, 3963.4 s) and BCS algorithm (5631.5 s, 7412.3 s), showing statistically obvious differences ( P < 0.05 ). In addition, the reconstruction efficiency of the CSMRI algorithm was the best. After 4 hours of intravenous thrombolysis, the stroke scale score (12.3 scores) of the deterioration group was much higher than that of the control group (8.4 scores) ( P < 0.05 ). The occlusion of responsible great vessel in the deterioration group (30 cases, 83.33%) was obviously higher in contrast to that in the control group (74 cases, 49%) ( P < 0.05 ). Stroke scale score and occlusion of responsible great vessel were risk factors for EBD after intravenous thrombolysis.

Impact of Brain Atrophy on Early Neurological Deterioration and Outcome in Severe Ischemic Stroke Treated by Intravenous Thrombolysis

2018 ◽  
Vol 79 (5-6) ◽  
pp. 240-246 ◽  
Author(s):  
Olivier Tschirret ◽  
Gabriela Moreno Legast ◽  
Adeline Mansuy ◽  
Nathan Mewton ◽  
Marielle Buisson ◽  
...  
Keyword(s):  
Brain Atrophy ◽  
Multiple Logistic Regression Analysis ◽  
Univariate Analysis ◽  
Intravenous Thrombolysis ◽  
National Institutes Of Health ◽  
Neurological Deterioration ◽  
Good Outcome ◽  
Early Neurological Deterioration ◽  
Backward Procedure ◽  
Proximal Occlusion

Background: Brain atrophy has shown a protective effect on the risk of early neurological deterioration (END) related to malignant edema in patients with hemispheric infarction but could be deleterious on the outcome. Aims: We aimed to assess whether brain atrophy has an impact on the risk of END and on the outcome in severe ischemic strokes after intravenous (IV) thrombolysis. Methods: From a prospective thrombolysis registry, 137 patients who had a National Institutes of Health Stroke Scale (NIHSS) ≥15, MRI at admission, and IV thrombolysis were included. Relative cerebral volume was calculated. END was defined as a ≥2-points deterioration 72-h NIHSS and a good outcome as a modified Rankin Scale (mRS) ≤2 at 3 months. A multiple logistic regression analysis with a stepwise backward procedure was performed. Results: END and a good outcome were observed, respectively, in 20 (14.6%) and 48 (37.5%) patients. In univariate analysis, predictors of END included age (p = 0.049), diabetes (p = 0.041), and parenchymal hemorrhage (p = 0.039). In multivariate analysis, age (p = 0.018) was significantly associated with END. Brain atrophy was not associated with END even in subgroup analysis according to the baseline infarct size. In univariate analysis, age (p = 0.003), prestroke mRS (p = 0.002), hypertension (p = 0.006), baseline NIHSS (p = 0.002), END (p = 0.002), proximal occlusion (p = 0.006), and recanalization at 24 h (p < 0.001) were associated with a good outcome. Only baseline NIHSS (p = 0.006) was associated with a good outcome after adjustment. Conclusions: We did not find any impact of brain atrophy on the risk of END and the outcome at 3 months in severe ischemic strokes after IV thrombolysis.

scholarly journals Differences between predictive factors for early neurological deterioration due to hemorrhagic and ischemic insults following intravenous recombinant tissue plasminogen activator

2019 ◽  
Vol 49 (4) ◽  
pp. 545-550
Author(s):  
Koji Tanaka ◽  
Shoji Matsumoto ◽  
Konosuke Furuta ◽  
Takeshi Yamada ◽  
Sukehisa Nagano ◽  
...  
Keyword(s):  
Risk Factors ◽  
Plasminogen Activator ◽  
Tissue Plasminogen Activator ◽  
Predictive Factors ◽  
Recombinant Tissue Plasminogen Activator ◽  
Neurological Deterioration ◽  
Clinical Event ◽  
Nihss Score ◽  
Early Neurological Deterioration ◽  
Tissue Plasminogen

AbstractEarly neurological deterioration (END) following intravenous recombinant tissue plasminogen activator (rt-PA) treatment is a serious clinical event that can be caused by hemorrhagic or ischemic insult. We investigated the differences in predictive factors for END due to hemorrhagic and END due to ischemic insults. Consecutive patients from four hospitals who received 0.6 mg/kg intravenous rt-PA for acute ischemic stroke were retrospectively recruited. END was defined as a National Institutes of Health Stroke Scale (NIHSS) score ≥ 4 points within 24 h compared with baseline. END was classified into those due to hemorrhagic (ENDh) or ischemic (ENDi) insult based on computed tomography (CT) or magnetic resonance imaging. Risk factors associated with ENDh and ENDi were investigated by comparison with non-END cases. A total of 744 patients (452 men, median 75 years old) were included. END was observed in 79 patients (10.6%), including 22 ENDh (3.0%) and 57 ENDi (7.7%), which occurred within a median of 7 h after treatment. Multivariate analyses showed that higher pretreatment NIHSS score (odds ratio [OR] 1.06, 95% confidence interval [CI] 1.00–1.13) and pretreatment with antiplatelets (OR 2.84, 95% CI 1.08–7.72) were associated with ENDh. Extensive early ischemic change (Alberta Stroke Program Early CT Score ≤ 7 on CT or ≤ 6 on diffusion-weighted imaging; OR 2.80, 95% CI 1.36–5.64) and large artery occlusions (OR 3.09, 95% CI 1.53–6.57) were associated with ENDi. Distinct factors were predictive for the END subtypes. These findings could help develop preventative measures for END in patients with the identified risk factors.

scholarly journals High-Resolution Vessel Wall Magnetic Resonance Imaging of Small Unruptured Intracranial Aneurysms

2021 ◽  
Vol 10 (2) ◽  
pp. 225
Author(s):  
Łukasz Zwarzany ◽  
Ernest Tyburski ◽  
Wojciech Poncyljusz
Keyword(s):  
Magnetic Resonance Imaging ◽  
Risk Factors ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Vessel Wall ◽  
Intracranial Aneurysms ◽  
Aneurysm Rupture ◽  
Resonance Imaging ◽  
Aneurysm Wall ◽  
Conventional Risk Factors

Background: We decided to investigate whether aneurysm wall enhancement (AWE) on high-resolution vessel wall magnetic resonance imaging (HR VW-MRI) coexists with the conventional risk factors for aneurysm rupture. Methods: We performed HR VW-MRI in 46 patients with 64 unruptured small intracranial aneurysms. Patient demographics and clinical characteristics were recorded. The PHASES score was calculated for each aneurysm. Results: Of the 64 aneurysms, 15 (23.4%) showed wall enhancement on post-contrast HR VW-MRI. Aneurysms with wall enhancement had significantly larger size (p = 0.001), higher dome-to-neck ratio (p = 0.024), and a more irregular shape (p = 0.003) than aneurysms without wall enhancement. The proportion of aneurysms with wall enhancement was significantly higher in older patients (p = 0.011), and those with a history of prior aneurysmal SAH. The mean PHASES score was significantly higher in aneurysms with wall enhancement (p < 0.000). The multivariate logistic regression analysis revealed that aneurysm irregularity and the PHASES score are independently associated with the presence of AWE. Conclusions: Aneurysm wall enhancement on HR VW-MRI coexists with the conventional risk factors for aneurysm rupture.

Accuracy of Computed Tomography and Magnetic Resonance Imaging for Detection of Pathologic Risk Factors in Patients Diagnosed with Retinoblastoma

2021 ◽  
pp. 1-7
Author(s):  
Damrong Wiwatwongwana ◽  
Pichaya Kulniwatcharoen ◽  
Pongsak Mahanupab ◽  
Pannee Visrutaratna ◽  
Atchareeya Wiwatwongwana
Keyword(s):  
Magnetic Resonance Imaging ◽  
Risk Factors ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Resonance Imaging

scholarly journals High neutrophil-to-lymphocyte ratio predicts early neurological deterioration in spontaneous intracerebral hemorrhage patients

2021 ◽  
Vol 57 (1) ◽  
Author(s):  
Wafaa S. Mohamed ◽  
Amr E. Kamel ◽  
Ahmed H. Abdelwahab ◽  
Mohamed E. Mahdy
Keyword(s):  
Intracerebral Hemorrhage ◽  
Complete Blood Count ◽  
Absolute Lymphocyte Count ◽  
Neurological Deterioration ◽  
University Hospital ◽  
Stroke Severity ◽  
Low Grade ◽  
Nihss Score ◽  
Early Neurological Deterioration ◽  
Gcs Score

Abstract Background Intracerebral hemorrhage (ICH) is caused by bleeding, primarily into parenchymal brain tissue, and accounts for 9 to 27% of all strokes worldwide. Higher neutrophils, lower lymphocytes, and higher neutrophil-to-lymphocytes ratio (NLR) values predict worse outcomes after spontaneous intracranial hemorrhage (sICH) and could aid in the risk stratification of patients. Methods Eighty patients with sICH within the first 24 h of stroke onset and admitted into the neurology intensive care unit of an Egyptian university hospital and were assessed by GCS for consciousness level and NIHSS for stroke severity assessment, complete blood count, and special attention to NLR. Patients were reevaluated by GCS and NIHSS on the 7th day of the stroke. Early neurological deterioration (END) was defined as four points or a greater increase in the NIHSS score or two points or a greater decrease in GCS or death. Results END was recorded in 21.25% of patients while non-END was recorded in 78.75%. END was highly significantly associated with a low grade of GCS, high grade of NIHSS, elevated absolute lymphocyte count (ALC), and elevated NLR. Lower GCS score, higher NIHSS score, larger hematoma volume, and higher NLR values were independent predictors for END. The best cutoff of NLR in END prediction was > 9.1. Conclusion NLR is a trustworthy early predictor of sICH outcome.

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