Active clinical trials for "Arrhythmias, Cardiac"

Patients with difficult-to-treat epilepsy ("refractory epilepsy") are at high risk of sudden death: sudden unexpected death in epilepsy (SUDEP). Cardiac arrhythmias are one of the possible causes of SUDEP. When monitoring in the hospital setting, the frequency of cardiac arrhythmias in people with epilepsy is low: 0,4%. However, when a subcutaneous implantable device (Reveal XT) is used to monitor heart rhythm continuously for an extended period of time, the frequency of clinically relevant arrhythmias appeared much higher in two small observational studies (n=19): 6-20%. The aim of this study is to analyze the frequency and underlying mechanism of cardiac arrhythmias in a larger group of 50 people with refractory epilepsy with Reveal XT. In the future, this may help us to identify those epilepsy patients at high risk of cardiac arrhythmias, so that we can timely institute preventive measures (e.g. pacemaker implantation).

The Apple Heart Study (AHS) is a research study conducted to evaluate whether the Apple Heart Study App can use data collected on the Apple Watch to identify irregular heart rhythms, including those from potentially serious heart conditions such as atrial fibrillation. Up to 500,000 can participate in the study.

A severely reduced left ventricular ejection fraction is associated with increased mortality due to pump failure as well as to malignant ventricular arrhythmia. We hypothesize that targeted training may lead to improved survival and to increased parameters of risk stratification for malignant arrhythmia. Additionally, the training may lead to an improved psychological and mental condition of the patients

Patients scheduled for elective abdominopelvic laparoscopic surgery under general anesthesia were included. Rocuronium was used for the neuromuscular blockade (NMB) and the level of NMB was monitored with train-of-four (TOF) measurements. The participants from whom informed consent had been received were allocated to two groups according to the agent used for reversal of NMB, sugammadex, or neostigmine. The ECG recordings of the subjects were followed with a rhythm Holter device throughout the procedure until the postoperative 12th hour. Additionally, preoperative and immediate postoperative 12-lead ECGs were evaluated for corrected QT calculations and QT dispersion. Proarrhythmogenicity was assessed with QT related measurements. The documented arrhythmic events on the Holter monitoring were designated as clinical end-points.

Some patients with a long history of AF develops PH "reactive" type with an increase in pulmonary vascular resistance due to vasoconstriction or structural changes of the vascular wall. RFA PVI + RFA GP is the "gold standard" in the treatment of patients with persistent AF, do not respond to optimal therapy. The rear area of the pulmonary artery bifurcation is adjacent to the roof and part of the front of the left atrium. In the projection of this area are ganglionic plexus of the left atrium, the sympathetic nerve fibers of the pulmonary artery and baroreceptors main pulmonary artery.Recent studies have shown that radiofrequency denervation of the pulmonary artery improves the quality of life in patients with PH.

The purpose of this study is to assess the measurement conformity of an in vitro diagnostic device measuring the INR (International harmonized Ratio).

This protocol focuses on the evaluation of the GE noninvasive blood pressure parameter in subjects with dysrhythmias and normal sinus rhythm. The study follows the recommendations of the ANSI/AAMI SP10 Standard.

The purpose of the study is to determine the usefulness of Microvolt T Wave Alternans (MTWA) testing of patients that have had a heart attack and have decreased pumping ability of the lower chamber of their heart. MTWA testing is a non-invasive test used to detect the likelihood of developing abnormally fast rhythms in the lower chambers of the heart. The objective of the study is to prove that if a patient has a positive MTWA test, they will be more likely to develop abnormally fast and dangerous rhythms in the lower chambers of the heart. The results of the study will help doctors to determine which patients would benefit the most from having an Implantable Cardioverter Defibrillator (ICD) implanted.

The aim is to use the GRID to characterize the atrial substrate and develop a model for predicting recurrence rates after a single procedure using a PVI only approach and a contact catheter.

Holter monitoring is one of the most widely used diagnostic methods to detect cardiac arrhythmias. Newer Holter monitors may provide some advantages over the more traditional ones. This study will compare the findings of a Holter exam using an innovative 3-lead wireless water resistant device with a conventional device.