View clinical trials related to Atrial Fibrillation and Flutter.
Filter by:Patients with hyperthyroidism or hypothyroidism are often combined with atrial fibrillation, but after the stabilization of thyroid hormone levels after treatment, the patients' atrial fibrillation still persists. Radiofrequency ablation of the atrial fibrillation as one of the treatment options for atrial fibrillation has been widely used in the clinic, and has significant efficacy in maintaining sinus rhythm, improving cardiac function, and improving the prognosis of patients. However, there is a lack of clinical monitoring data on radiofrequency ablation of atrial fibrillation in patients who have combined thyroid dysfunction and have stabilized their thyroid hormone levels after treatment.
Oral anticoagulation (OAC) is indicated in a wide variety of clinical conditions including atrial fibrillation (AF), mechanical valve prosthesis (MVP), deep vein thrombosis and pulmonary embolism. Although direct OAC has replaced vitamin K antagonists (VKA) in non-valvular AF due to lower bleeding risk, it's still recommended to use VKA specifically in cases of valvular AF, MVP and anti-phospholipid syndrome. VKA has a narrow therapeutic range and multiple drug interactions causing unpredicted pharmacodynamics. This requires regular monitoring of the international normalized ratio (INR) level to ensure it's in the target therapeutic range and prevent extreme values that may result in thrombo-embolic events or sometimes fatal bleeding. Self-INR monitoring and management have emerged recently as a safe cost-effective alternative to standard management, with evidence of tighter control of INR, reduction of thrombo-embolic events, and improving treatment-related quality of life. However, there are no specific criteria for patient selection. Whether the level of education and other social factors would affect the outcomes of self-management is still not clear. Owing to the wide geographical area served by Aswan Heart Center, many patients have to cover long distances to follow up their INR and seek medical advice regarding adequate dose modification. This may result in reluctance and non-compliance to clinic visits and INR testing. Proper education, training and providing an alternative near place to measure the INR and self-adjust warfarin dose is expected to improve patient adherence and compliance.
The purpose of this pragmatic study is to evaluate the safety, performance and effectiveness of the VARIPULSE catheter technology used in combination with the TRUPULSE™ Generator, and the compatible EAM system (Carto 3D) to treat patients with atrial fibrillation and related arrhythmias during clinically-indicated ablation procedures.
The objective of the study is to evaluate the clinical consequences following the detection of postoperative atrial fibrillation or flutter (POAF) using a remote heart rhythm monitoring strategy with a photoplethysmography based smartphone technology in the early postoperative period after discharge.
Precise identification of the atrial fibrosis is essential for successful catheter ablation of atrial arrhythmias in patients with atrial fibrillation. Voltage mapping of endocardial electrograms is currently used to delineate the anatomical substrate, but this is influenced by the direction of the activation wave front and is limited by the patient-specific thresholds. Mapping of local myocardial electrical impedance may overcome these limitations.
Atrial fibrillation (AF) is a major public health problem: it impairs quality of life and independently heightens the risks of ischemic stroke, heart failure and all-cause mortality. AF is a common reason for presenting to emergency departments (ED) in Kaiser Permanente Northern California (KPNC) and is associated with frequent hospitalization. Additionally, inter-facility hospitalization rates for AF vary across KPNC. Improvements in modifiable components of ED AF care could potentially reduce low-yield hospitalizations and the associated costs, patient inconveniences, and complications that can ensue. Real-time clinical decision support systems (CDSS) can transform entrenched physician practices and improve patient outcomes. The investigators will conduct a stepped-wedge cluster randomized trial of a CDSS intervention across 13 KPNC EDs for the comprehensive management of acute AF with the following three aims: 1) To evaluate the impact of the CDSS intervention on index hospitalization rates; 2) To evaluate the impact of the CDSS intervention on ED AF rate and rhythm control process-of-care metrics; and 3) To evaluate the impact of the CDSS intervention on AF stroke prevention actions for eligible participants at the time of ED discharge. The investigators hypothesize that the CDSS intervention will safely reduce index hospitalization rates, improve rate and rhythm control process-of-care metrics, and increase stroke prevention actions for eligible participants at ED discharge and within 30 days.
The study includes collection of data from patients referred to a therapeutic evaluation in Tays Sydänkeskus Oy (Heart Center Co, Tampere University Hospital) or another unit of Sydänkeskus (hereafter the Heart Hospital) due to suspected cardiac arrhythmia. Data collection takes place outside the hospital in normal daily conditions. The monitoring is started during the outpatient visit at Heart hospital polyclinic or when leaving home from cardiac ward and it continues for 2 days. Reference information about the occurrence of arrhythmia episodes and the reference ECG data are obtained from simultaneously worn Holter device. During the two days the study device and the reference device are worn continuously. Wearing the devices does not affect the daily routines of the participant except there is no possibility to take a shower. The arrhythmia episodes are labelled in post-hoc signal analysis and annotations visually confirmed by a cardiologist. The participants are instructed to take ECG recordings with the wrist device every time the device gives a notification and also whenever the participant feels arrhythmia symptoms. There will be at least four intermittent ECG records taken on each day.
Pulmonary vein isolation (PVI) using the cryoballoon has been proven equal to RF-PVI and is widely used. High Power Short Duration Ablation in RF-PVI has been successfully tested in several trials. Prospective data comparing both strategies is lacking. This trial will compare acute success rates, safety and foremost long-term outcome of two different PVI strategies (HPSD-PVI vs. cryo-PVI).
This is a prospective, single center, non-randomized, open-label, single arm study in which we will gather data and physician input for the assessment and further development of the KODEX - EPD functions for assessing tissue pressure, tissue thickness, lesion transmurality.
1. To determine whether a risk-based screening programme for occult paroxysmal atrial fibrillation, involving extended cardiac monitoring in adults with CHA2DS2-VASc score of 3 or greater, increases the detection of new atrial fibrillation/flutter. 2. To determine whether a risk-based screening programme for occult paroxysmal atrial fibrillation, involving extended cardiac monitoring in adults with CHA2DS2-VASc score of 3 or greater, is cost-effective. 3. To determine the sensitivity, specificity, positive predictive value and negative predictive values of self-monitoring of pulse in adults for detection of atrial fibrillation. 4. To determine the cost, cost effectiveness, and budget impact of a risk-based screening programme for occult paroxysmal atrial fibrillation, relative to a control of usual care in general practice.