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Atrial fibrillation (AF) and heart failure with preserved ejection fraction (HFpEF) are very common conditions that often occur together and result in worsening symptoms and reduced quality of life (QoL). Limitations being able to participate in activities of daily living is a primary complaint for AF-HFpEF patients, yet effective strategies to address this issue remain limited. While exercise interventions targeting aerobic training (AT) are recommended for patients with AF and HFpEF, unique challenges exist in this patient population who tend to be older. Specifically, many older patients with AF and HFpEF have muscle weakness, sarcopenia and frailty, that can make aerobic-focused exercise difficult and less tolerable. This study proposes that starting with progressive resistance training (PRT) before aerobic exercise may overcome these issues by improving muscle strength, making AT more manageable, and leading to better health outcomes. The goal of this study is to assess whether a sequential exercise program, named 'PREACTIVE' improves how people feel, decrease the amount of symptoms, and their ability to participate in exercise and activities. This study will specifically test a sequenced exercise approach of resistance training followed by aerobic exercise to improve symptoms, and quality of life in AF-HFpEF.

This study is testing two different ways of treating atrial fibrillation (AF) in people who also have heart failure with mildly reduced or preserved heart function. Patients will randomly be assigned to either rhythm control using catheter ablation or rate control using medicines. The pilot phase will determine if a larger study can be successfully carried out to see which approach better improves survival, reduces hospitalizations, and enhances quality of life.

The goal of this clinical trial study is to test whether a mathematical calculation, using the patient's gender, weight and kidney function, can better predict a patient's heparin goal dose than a flat number of units per patient weight can. Participants will have the first dose of heparin infusion calculated, after which if adjustments are needed, the Hospital's prebuilt table for results driven dosing for this purpose is used. The researchers will compare the time it takes for the participants to get to the desired goal using the patient's information for calculation versus patients in the past who received the medication using the flat rate. The hypothesis is that the patients with enhanced personal data, gender, weight and kidney function, included for the initial dose, will get to their goal lab value sooner and with less chance of delay or overshooting the goal. A quicker time to goal lab value is beneficial to patients in many ways, including earlier treatment of the clot or coronary issue that the patient is experiencing.

The goal of this randomized open-label clinical trial is to evaluate two different strategies for the treatment of recurrent atrial fibrillation (AF) after AF ablation. Patients who have symptomatic, drug-refractory recurrence of AF will be randomized to either a redo AF ablation vs conduction system pacing with AV node ablation. Patients will need to have undergone at least 1 prior AF ablation to be considered eligible for the study. The current trial is a vanguard study of 16 patients and will determine the feasibility of enrolment, compare changes in quality of life, and inform the design of the definitive REDO AF trial.

Whereas the available evidence mostly supports chronic sleep disruption as a risk factor for incident AF, less is known about the near-term risk of a discrete atrial fibrillation (AF) episode following a night of disrupted or poor-quality sleep. This prospective, randomized, case-crossover study aims to examine the acute effects of sleep disruption on clinically relevant cardiac ectopy pertinent to AF.

A randomized, placebo-controlled, participant-and investigator-blinded study to evaluate the efficacy in reducing atrial fibrillation burden as well as the safety, tolerability and pharmacokinetics of PKN605 in participants with atrial fibrillation

This study is researching experimental drugs called REGN7508 and REGN9933. The study is focused on participants who have atrial fibrillation, which means that the heart beats too fast and unevenly. REGN7508 and REGN9933 are designed to help stop blood clots forming in patients with atrial fibrillation. The aim of the study is to see how well REGN7508 and REGN9933 work in patients that get medicine for their atrial fibrillation. The bleeding effects of REGN7508 and REGN9933 will be compared to another medicine (apixaban), which is available on the market to treat and prevent formation of blood clots. The study is looking at several other research questions, including: * What side effects may happen from taking REGN7508 or REGN9933 * How well do the study drugs reduce the risk of having a stroke * How much of REGN7508 or REGN9933 is in the blood at different times * Whether the body makes antibodies against REGN7508 or REGN9933 (which could make the drugs less effective or could lead to side effects)

Compare the efficacy of the left atrial Cox-Maze IV lesion set versus the Tampa 2 lesion set versus the EnCompass ablation alone, in the surgical treatment of atrial fibrillation at one year post-operatively.

Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia. It is estimated that between 3 and 6 million Americans are currently living with AF, while 12 million people in the United States will have AF in 2030. Obesity and its comorbidities such as type 2 diabetes (T2DM), hypertension, and obstructive sleep apnea (OSA) are major risk factors for development and progression of AF. Metabolic and Bariatric Surgery (MBS) is the most effective currently available treatment for obesity. Patients typically lose 20 to 35 percent of body weight after surgery which is often sustained for many years. MBS can improve all 5 major risk factors of AF including obesity, hypertension, T2DM, OSA, and systemic inflammation. The purpose of the study is to understand if MBS can affect the severity of AF and the toll AF's symptoms take on patients.

The goal of this randomized clinical trial is to learn whether patients with symptomatic atrial fibrillation or atrial flutter (AF) who require heart imaging to rule out a blood clot before cardioversion would benefit from cardiac computed tomography angiography (CCT) in the emergency department (ED) compared to current standard of care management. This will be a multicenter trial evaluating whether CCT-facilitated cardioversion in the ED reduces hospital admission, reduces repeat presentations to hospital and improves patient quality of life compared to the current standard of care. Participants will undergo CCT-facilitated cardioversion or be treated according to current standard of care while in the ED and complete quality of life questionnaires in the ED and follow-up at 30 days.

Per the 2021 National Survey on Drug Use and Health administered by the U.S. Department of Health and Human Services, 85% of all American adults consume alcohol. Atrial fibrillation (AF) is the most common arrhythmia, affecting more than 10 million individuals in U.S., comprising 4.5% of the adult population. Although alcohol abstinence clearly reduces AF in heavy drinkers, observational data comparing the health effects of limited consumption versus abstention are conflicting. The Mediterranean diet is one of the few that has demonstrated clear cardiovascular benefits in a randomized study-this diet allows for the consumption of red wine (or high polyphenol/ low alcohol alcohol), generally not more than one drink in 24 hours, with meals, avoiding spirits and binge drinking. The effect of the "Mediterranean drinking pattern" on AF risk compared to alcohol abstinence remains unknown. This single center, randomized, controlled trial aims to compare the effects of a digital health intervention to encourage durable alcohol abstinence versus allowing guideline-adherent moderate alcohol consumption on AF severity. The knowledge gained from this study may be used to determine optimal thresholds for alcohol use among AF patients.

Atrial fibrillation (AF) is the most common type of irregular heartbeat doctors see. People with AF sometimes have a procedure called an ablation to help get their heart back into a normal rhythm. However, this treatment doesn't always work. This study is looking at whether adding an extra step to the usual ablation-specifically treating another area of the heart called the left atrial (LA) posterior wall-can help people feel better overall, compared to just repeating the standard pulmonary vein isolation ablation procedure.