Paroxysmal Atrial Fibrillation in Cryptogenic Stroke: an Overlooked Explanation?

Abstract Approximately one third of ischemic strokes are labeled cryptogenic because the etiology is unknown despite a thorough evaluation. Paroxysmal atrial fibrillation carries the same risk of ischemic stroke as persistent atrial fibrillation and has increasingly gained attention as a potential source of cryptogenic stroke. Recent trials utilizing long-term cardiac monitoring devices have demonstrated high rates of previously undetected paroxysmal atrial fibrillation in patients with cryptogenic stroke. Newly detected atrial fibrillation has subsequently changed treatment and increased the use of oral anticoagulation in these studies. Other trials have shown an increased risk of stroke and thromboembolism in patients with device-detected subclinical tachyarrhythmias. Together, these studies suggest an important relationship between episodes of paroxysmal atrial fibrillation and the risk of cryptogenic stroke, but further investigations are needed to guide diagnostic and therapeutic decisions.
Source: Current Atherosclerosis Reports - Category: Cardiology Source Type: research

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Conclusions The presence of comorbidities was linked to NOAC use over vitamin K antagonist, which is different from prescription factor studies in other countries and requires further study.
Source: International Journal of Clinical Pharmacy - Category: Drugs & Pharmacology Source Type: research
AbstractFew data are available on age-related burden and characteristics of embolic stroke of undetermined source (ESUS) in the real world clinical practice. The aim of our study was to provide information about it. We retrospectively analyzed data of patients consecutively admitted to our Stroke Unit along 1  year (2017, November 1st–2018, October 31st). The etiology of ischemic stroke was defined at hospital discharge; ESUS was considered as a subset of cryptogenic stroke, and defined according to the 2014 international criteria. In the analyzed period, 306 patients, 52.3% females, mean age ±&thi...
Source: Journal of Thrombosis and Thrombolysis - Category: Hematology Source Type: research
This study aimed to evaluate the risk factors for subsequent DC after EVT. This retrospective cohort study comprised 138 patients who received EVT between April 2015 and June 2019 at our center. The need for subsequent DC was defined as cerebral edema or/and hemorrhagic transformation caused by large ischemic infarction, with a ≥ 5-mm midline shift and clinical deterioration after EVT. The relationship between risk factors and DC after EVT was assessed via univariate and multivariable logistic regression. Thirty (21.7%) patients required DC. These patients tended to have atrial fibrillation (P = 0.0...
Source: Neurosurgical Review - Category: Neurosurgery Source Type: research
This study was conducted to clarify CV and bleeding events in Japanese aspirin users with a history of CV diseases. This study was a prospective, nationwide, multicenter cooperative registry of Japanese patients with CV diseases at risk of thromboembolism who were taking aspirin (75–325 mg) for at least 1 year. We observed major CV and bleeding events during follow-up. Patients with history of ischemic stroke (IS), transient ischemic attack (TIA), coronary artery disease (CAD), atrial fibrillation (AF), and venous thromboembolism (VTE) were included and analyzed in this sutdy. CV events included IS, TIA, CA...
Source: Heart and Vessels - Category: Cardiology Source Type: research
Publication date: Available online 8 August 2019Source: Canadian Journal of CardiologyAuthor(s): Leszek Drabik, Małgorzata Konieczyńska, Anetta UndasAbstractBackgroundFormation of dense fibrin clots has been reported in both atrial fibrillation (AF) and ischemic stroke. We have previously demonstrated that such clot properties can predict thromboembolism and major bleeding in AF patients treated with vitamin K antagonists (VKA). In this longitudinal cohort study, we evaluated whether impaired fibrinolysis is associated with clinical outcomes in AF.MethodsIn 236 patients with AF receiving with vitamin K antagonists (VKA),...
Source: Canadian Journal of Cardiology - Category: Cardiology Source Type: research
AbstractAtrial fibrillation (AF) is the most common arrhythmia in clinical practice and its prevalence increases with age. Few data are available about the clinical performance of direct oral anticoagulant (DOACs) in patients aged  ≥ 80 years with AF. The aim of our propensity score matched cohort study was to compare the safety and efficacy of DOACs versus well-controlled VKA therapy among octogenarians with AF in real life setting. Data for this study were sourced from the multicenter prospectively maintained Atrial Fibrillation Research Database (NCT03760874), which includes all AF patients followe...
Source: Journal of Thrombosis and Thrombolysis - Category: Hematology Source Type: research
I read with interest the timely paper titled “Thromboembolism in the Absence of Atrial Fibrillation” by Smietana et al1 that discusses several highly important but underappreciated contributors to ischemic stroke in patients with and without atrial fibrillation (AF). Several are worthy of further emphasis and/or expansion for your readers, both investigators and clinicians. First is the recognition of the concept of atrial cardiomyopathy.2 Atrial cardiomyopathy may be a cause and/or consequence of AF; can vary with the etiology, duration, number, and severity of associated comorbidities as well as the amount of...
Source: The American Journal of Cardiology - Category: Cardiology Authors: Source Type: research
ConclusionIn patients with dual-chamber pacemakers and comparable CHA2DS2-VASc score, pacemaker-detected AF burden is associated with elevated risk for thromboembolism. Further research is needed to clarify how pacemaker-detected AF burden could incorporate with CHA2DS2-VASc score variables and help to guide anticoagulation.
Source: Heart and Lung: The Journal of Acute and Critical Care - Category: Respiratory Medicine Source Type: research
ConclusionTTS has a good short- and medium-term prognosis. However, the rate of in-hospital complications is high and should not be overlooked. Dyspnea at presentation, CKD, CAD and lower LVEF on admission were independent predictors of in-hospital complications. Prolonged QTc on admission was associated with complications in follow-up.ResumoIntroduçãoA síndrome de Takotsubo (TTS) caracteriza-se por disfunção sistólica ventricular esquerda transitória.ObjetivoCaracterizar uma população portuguesa com TTS e determinar o seu prognóstico a curto e mé...
Source: Revista Portuguesa de Cardiologia - Category: Cardiology Source Type: research
Authors: Yang Y, Sun W, Li D, Li XY, Wang XT, Li SC, Zhao HJ, Zhang JB Abstract Atrial fibrillation (AF) is an independent risk factor for intracranial hemorrhage in patients receiving recombinant-tissue-type plasminogen activator (rt-PA) thrombolytic therapy. Research showed that patients with acute ischemic stroke (AIS) could benefit from multimode computed-tomography- (CT-) guided intravenous thrombolysis over 4.5 hours. The medical data of patients with AIS in our center were retrospectively reviewed, and the data of the multimode CT-guided thrombolytic therapy or nonthrombolytic therapy within different time w...
Source: International Heart Journal - Category: Cardiology Tags: Int Heart J Source Type: research
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