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Condition: Atrial Fibrillation
Procedure: MRI Scan

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Total 412 results found since Jan 2013.

An Approach to Working Up Cases of Embolic Stroke of Undetermined Source Stroke
Conclusions Our data indicate that patients with cryptogenic embolic stroke show distinct clinical and radiological features depending on the underlying causes.
Source: JAHA:Journal of the American Heart Association - March 21, 2016 Category: Cardiology Authors: Ryoo, S., Chung, J.-W., Lee, M. J., Kim, S. J., Lee, J. S., Kim, G.-M., Chung, C.-S., Lee, K. H., Hong, J. M., Bang, O. Y. Tags: Etiology, Risk Factors, Magnetic Resonance Imaging (MRI), Ischemic Stroke Source Type: research

Magnetic Resonance Imaging White Matter Hyperintensity as a Predictor of Stroke Recurrence in Patients with Embolic Stroke of Undetermined Source
This study aimed to investigate factors associated with stroke recurrence and new-onset atrial fibrillation (AF) in patients with embolic stroke of undetermined source (ESUS).
Source: Journal of Stroke and Cerebrovascular Diseases - September 21, 2018 Category: Neurology Authors: Satoru Kashima, Takahiro Shimizu, Hisanao Akiyama, Yasuhiro Hasegawa Source Type: research

Cerebral Microbleeds and Chronic Kidney Disease in Acute Ischemic Stroke Patients with Atrial Fibrillation
Background: Cerebral microbleeds (CMBs) are associated with the risk of intracerebral hemorrhage in stroke patients with atrial fibrillation (AF). We investigated the association between CMBs and chronic kidney disease (CKD) in patients with acute ischemic stroke and AF. Methods: We retrospectively examined consecutive patients with acute ischemic stroke and AF who underwent brain gradient-echo T2*-weighted magnetic resonance imaging. The number and distribution (lobar, deep or infratentorial, and mixed) of CMBs were assessed.
Source: Journal of Stroke and Cerebrovascular Diseases - February 2, 2020 Category: Neurology Authors: Kazuo Yamashiro, Ryota Tanaka, Naohide Kurita, Yuji Ueno, Nobukazu Miyamoto, Kenichiro Hira, Sho Nakajima, Takao Urabe, Nobutaka Hattori Source Type: research

Silent Brain Infarctions and Leukoaraiosis in Patients With Retinal Ischemia Brief Report
Conclusions—Silent cerebral ischemia is present in about 1 in 7 patients with retinal ischemia. The high rate of symptomatic internal carotid artery stenosis suggests that large artery atherosclerosis plays a major role in the pathogenesis of acute retinal ischemia.
Source: Stroke - April 24, 2017 Category: Neurology Authors: Amir Golsari, Diana Bittersohl, Bastian Cheng, Pia Griem, Christoph Beck, Andrea Hassenstein, Max Nedelmann, Tim Magnus, Jens Fiehler, Christian Gerloff, Gotz Thomalla Tags: Risk Factors, Imaging, Magnetic Resonance Imaging (MRI), Prognosis, Ischemic Stroke Brief Reports Source Type: research

Can Early Effective Anticoagulation Prevent New Lesions on Magnetic Resonance Imaging in Acute Cardioembolic Stroke?
Background: The timing of warfarin administration for acute ischemic stroke (AIS) patients with atrial fibrillation (Af) has not been established. We hypothesized that achieving targeted prothrombin time and international normalized ratio (PT-INR) at 2 weeks could prevent AIS patients with Af from developing a new lesion on diffusion-weighted magnetic resonance imaging (DW-MRI).Methods: Of consecutively enrolled AIS patients with Af between 2008 and 2011, we selected the patients who were given warfarin within 2 weeks of admission and had DW-MRI and blood test for PT-INR both on admission and at 2 weeks. Warfarin was st...
Source: Journal of Stroke and Cerebrovascular Diseases - August 8, 2014 Category: Neurology Authors: Eiichi Nomura, Tomohiko Ohshita, Eiji Imamura, Shinichi Wakabayashi, Hiroshi Kajikawa, Masayasu Matsumoto Tags: Original Articles Source Type: research

Letter by Werring et al Regarding Article, "Embolic Stroke, Atrial Fibrillation, and Microbleeds: Is There a Role for Anticoagulation?" Letters to the Editor
Source: Stroke - May 22, 2016 Category: Neurology Authors: Werring, D. J., Wilson, D., Marti-Fabregas, J. Tags: Atrial Fibrillation, Biomarkers, Magnetic Resonance Imaging (MRI), Intracranial Hemorrhage, Ischemic Stroke Letters to the Editor Source Type: research

Predictors of Occult Atrial Fibrillation in One Hundred Seventy-One Patients with Cryptogenic Transient Ischemic Attack and Minor Stroke
Recent randomized studies have shown the potential of prolonged cardiac rhythm monitoring to detect silent paroxysmal atrial fibrillation (PAF) in patients with cryptogenic stroke. Our aim was to identify clinical and magnetic resonance imaging (MRI) factors that predict the detection of PAF during long-duration rhythm cardiac Holter (LDRCH) monitoring.
Source: Journal of Stroke and Cerebrovascular Diseases - August 1, 2016 Category: Neurology Authors: Veronica Sudacevschi, Cathy Bertrand, Marie L. Chadenat, Chlo é Tarnaud, Fernando Pico Source Type: research

Limb Shaking Transient Ischemic Attacks with Normal Neurovascular Ultrasound may Herald Cardioembolic Stroke: ACase Report
We describe a 74 year-old woman with abrupt left arm jerking and normal urgent computed tomography scan, electroencephalography (EEG) as well as carotid and transcranial ultrasound. Two days later she developed an overt ischemic stroke, with left mesencephalon and left cerebellar hemisphere lesions at brain magnetic resonance imaging and paroxysmal atrial fibrillation at Holter-EKG.
Source: Journal of Stroke and Cerebrovascular Diseases - July 17, 2018 Category: Neurology Authors: Emanuele Bartolini, Alessandro Napolitano, Monica Mazzoni Tags: Case Report Source Type: research

A Post-hoc Study of D-Amino Acid Oxidase in Blood as an Indicator of Post-stroke Dementia
In conclusion, our data support that plasma DAO levels were increased in PSD patients and correlated with brain WMH, independent of age, gender, hypertension, and renal function. Plasma DAO levels may therefore aid in PSD diagnosis. Introduction Stroke is a risk factor for both vascular dementia and Alzheimer's disease (1, 2). Functional recovery develops over the course of 26 weeks after a stroke (3), but the survivors are often left with disabilities. In addition to the sequelae of acute neuronal damage, the 1-year post-stroke dementia (PSD) rates after first-ever and recurrent stroke are ~10 and 30...
Source: Frontiers in Neurology - April 25, 2019 Category: Neurology Source Type: research

Intravenous Thrombolysis in Posterior Circulation Stroke
Conclusions: Up to date, no data about PCIS and IVT are available from RTCs. Based on limited results from retrospective clinical studies and case series, IVT is safer for use in PCIS than in ACIS. Patients with brainstem ischemia, vertebral artery occlusion, and absence of basilar or posterior cerebral artery occlusion could be considered for treatment with IVT even in borderline cases. Time to IVT in PCIS seems to be a less crucial factor than in ACIS. IVT for PCIS may be beneficial even after 4.5 h from symptom onset. Introduction History of Intravenous Thrombolysis—The Most Relevant Studies Intravenous...
Source: Frontiers in Neurology - April 25, 2019 Category: Neurology Source Type: research

Frequency of Hemorrhage on Follow Up Imaging in Stroke Patients Treated With rt-PA Depending on Clinical Course
Conclusions: Frequency of hemorrhagic transformation in Routine follow-up brain imaging and consecutive changes in therapeutic management were different depending on clinical course measured by NHISS score. Introduction Brain imaging 24–36 h after systemic thrombolysis for acute ischemic stroke is recommended in American Stroke Association and European Stroke Organization guidelines (1, 2). Brain imaging is performed to detect secondary bleeding or hemorrhagic transformation in order to adapt medical stroke prevention if necessary. Guideline recommendations are based on the results of the first study on rt-PA...
Source: Frontiers in Neurology - April 15, 2019 Category: Neurology Source Type: research

Propensity Score-Matched Analysis of Lesion Patterns in Stroke Patients With Patent Foramen Ovale and Patients With Spontaneous Intracranial Artery Dissection
Conclusion: The present study suggests that lesion patterns observed from DWI of patients with PFO and SIAD might provide clues to the etiology of infarcts. Single lesions (cortical or subcortical) might be a typical feature of PFO associated strokes, while multiple lesions in one vascular territory might be a specific feature of SIAD associated strokes. Introduction Both patent foramen ovale (PFO) and spontaneous intracranial artery dissection (SIAD) are important stroke risk factors, especially in young and middle-aged adults (1–3). About 25% of patients with ischemic stroke are cryptogenic (4), and PFO is ...
Source: Frontiers in Neurology - April 23, 2019 Category: Neurology Source Type: research

Imaging Characteristics of Ischemic Strokes Related to Patent Foramen Ovale Clinical Sciences
Conclusions— A PFO-stroke usually appears as a single cortical or multiple small ischemic lesions in the vertebrobasilar circulation without any visible vessel occlusion on angiography. The recanalization rate is significantly lower than in AF-stroke. These imaging characteristics of PFO-stroke may help to diagnose the mechanism and determine the treatment strategy.
Source: Stroke - November 25, 2013 Category: Neurology Authors: Kim, B. J., Sohn, H., Sun, B. J., Song, J.-K., Kang, D.-W., Kim, J. S., Kwon, S. U. Tags: Pediatric and congenital heart disease, including cardiovascular surgery, Acute Cerebral Infarction, Computerized tomography and Magnetic Resonance Imaging Clinical Sciences Source Type: research

Prevalence and Prognostic Features of ECG Abnormalities in Acute Stroke
Conclusions About 4 in 5 acute stroke patients in this African cohort had evidence of a baseline ECG abnormality, but presence of any atrial enlargement was the only independent ECG predictor of death or disability.
Source: Global Heart - March 13, 2017 Category: Cardiology Source Type: research

Cardiac Risk Factors for Stroke: A Comprehensive Mendelian Randomization Study
CONCLUSIONS: Available genetic data do not support substantial effects of cardiac traits on the risk of stroke beyond known clinical risk factors. Our findings highlight the need to carefully control for confounding and other potential biases in studies examining candidate cardiac risk factors for stroke.PMID:34911345 | DOI:10.1161/STROKEAHA.121.036306
Source: Atherosclerosis - December 16, 2021 Category: Cardiology Authors: Simon Frerich Rainer Malik Marios K Georgakis Moritz F Sinner Steven J Kittner Braxton D Mitchell Martin Dichgans Source Type: research