Clinical trials

The superior vena cava (SVC) is one of the most common non pulmonary vein (PV)-triggers for atrial tachyarrhythmias. SVC electrical isolation can be reached by circular radiofrequency (RF)-ablation under close monitoring of the phrenic nerve. However, adding substrate modification and vein of Marshal (VoM) ethanol infusion to the ablation procedure might substantially improve long-term outcomes. The aim of this study is to evaluate the recurrence rate 1 year after the index ablation in patients undergoing a redo ablation for recurrent paroxysmal atrial fibrillation (PAF) despite durable pulmonary vein isolation (PVI) with either SVC isolation alone or with substrate modification including vein of Marshal ethanolisation in addition to SVC isolation alone

The goal of this observational, retrospective, multicenter study is to characterize the arrhythmic burden and identify predictive factors for ventricular arrhythmias (VAs) in adult patients hospitalized for acute myocarditis (AM). The main questions it aims to answer are: * What is the incidence of sustained ventricular arrhythmias during the index hospitalization in patients with acute myocarditis? * What clinical, biological, electrocardiographic, and imaging factors predict the occurrence of sustained ventricular arrhythmias during hospitalization and after discharge? Researchers will compare patients who developed sustained VAs during hospitalization to those who did not, in order to identify independent predictors of arrhythmic events and develop a validated risk stratification score. Participants' medical records from 2020 to 2024 will be reviewed to collect: * Baseline demographic, clinical, biological, electrocardiographic, and imaging data at admission * In-hospital management strategies and outcomes, including mortality, cardiogenic shock, and heart replacement therapy * Long-term follow-up data including VA recurrence, sudden cardiac death, and development of cardiomyopathy, with censoring applied on January 1, 2026

The goal of this observational study is to follow all patients implanted with extravascular implantable cardioverter-defibrillators (EV-ICDs) in Belgium throughout the lifetime of the devices. The main goal of the study is to keep track of: * all parameters of the device * complications * arrhythmia detection and therapy delivery * clinical endpoints (quality of life, cardiac and infectious events) Participants who underwent or will undergo an EV-ICD implantation as part of their regular medical care will be asked if data can be collected from their medical record. No additional tasks are required for the study.

The goal of this clinical study is to find out which treatment works best for people with persistent atrial fibrillation (a type of irregular heartbeat). Researchers are comparing two types of heart ablation procedures: * An anterior mitral line ablation (a treatment at the front part of the heart) * A posterior mitral line ablation (at the back of the heart), sometimes with an extra step using a small vein called the Vein of Marshall The main questions the study aims to answer are: * Which approach works better at fixing the heart rhythm? * Which approach is safer (less complications)? People who take part in this study will: * Undergo an ablation procedure as part of their standard care * Attend follow-up visits at 1, 3, and 6 months * Have tests like ECGs, heart ultrasound (echocardiogram), blood tests, heart rhythm monitors (Holter), and a heart CT scan

The main aim of this trial is to determine whether there are fewer cardiovascular events when patients with coronary artery disease take a low dose of colchicine of 0.5 mg daily on top of optimal standard treatment after treatment with PCI, compared with placebo in combination with optimal standard treatment. More specifically, we aim to investigate the benefits of a daily low dose of colchicine in patients with coronary artery disease after treatment with PCI, to confirm that a daily low dose of colchicine helps prevent additional incidents in coronary artery disease, and to identify a subgroup of patients with CAD who are at increased risk for cardiovascular events and could benefit most from colchicine.

In this study, patients who have undergone or will undergo a transcatheter edge-to-edge repair (TEER) for tricuspid valve regurgitation (TR) will be followed up for 5 years. The goal of this prospective and retrospective, observational, non-randomized, multicenter registry is to confirm that TEER is a feasible, safe and effective treatment option for TR and to evaluate the long-term efficacy and safety of TEER. The main endpoints are: * Change in tricuspid regurgitation grade: number of patients with a reduction in tricuspid regurgitation score by at least one grade * Composite of major adverse event: number of patients with composite of major adverse event (cardiovascular mortality, acute kidney injury, myocardial infarction, stroke or TIA, coronary revascularization, new onset AF or ventricular arrhythmia)

Surgical reconstruction to restore oral function and aesthetics after major ablative surgery in the oral cavity forms a challenge to maxillofacial surgeons, and greatly impacts patient' quality of life (QOL). The "Oncological-bridge (O-bridge®)" protocol, which offers (immediate/delayed) fixed prosthetic rehabilitation in a minimum of sessions and a strongly reduced two-week treatment time.

Background Obstructive sleep apnea syndrome (OSAS) is a sleep-related breathing disorder characterized by intense snoring and repetitive complete or partial obstructions of the upper airway during sleep together with daytime sleepiness. Several non-invasive therapeutical options exist, however, they do not offer a permanent improvement. Maxillomandibular advancement (MMA) surgery is a procedure which changes the upper airway in a permanent way. Objectives The investigators aim to develop a prospective database registering 3D volumetric changes of the upper airway and its anatomic subregions, the apnea-hypopnea index (AHI) and quality of life (QOL) of all consecutive patients eligible for MMA, performed by Dr. Neyt. Patient demographics, detailed virtual cone-beam computed tomography (CBCT) planning parameters, orthognathic surgery, polysomnographic and QOL data are being collected during consecutive visits within the framework of routine practice. Design A prospective, observational cohort study Study center General Hospital (AZ) Sint-Jan Brugge-Oostende Population The investigators would like to include all OSAS patients (AHI ≥ 5) requiring a MMA by Dr. Neyt starting from January 2015. Endpoints The investigators aim to collect data that could provide information about the advantages and disadvantages of the routinely performed 3D CBCT preoperative MMA surgery planning for OSAS patients, regarding 3D volumetric changes of the upper airway and its anatomic subregions and quality of life (QOL) in a subjective manner with the Epworth Sleepiness Scale (ESS) and the OSAS questionnaire and in an objective manner with evaluation of the apnea-hypopnea index (AHI). Duration In light of the continuous improvement of patient care, a database will be maintained from January 2015 onwards to enable registration of large-scale OSAS patient data. Conclusions Development of a database registering 3D CBCT planning, polysomnographic data and quality of life (QOL) of all consecutive patients eligible for MMA, will provide more information about potential patient, virtual planning and surgical factors influencing accuracy of MMA, and the associated biological benefits of this procedure on the upper airway volume, the AHI and general QOL. Moreover, registration of those results could function as a measurement of quality of care, or could be used for sample size calculation for future large multicenter prospective trials.

The investigators aim to develop a prospective database in which patient demographics, surgical, dental, prosthetic and QOL parameters collected during consecutive visits within the framework of routine practice, are being registered for each oncological patient eligible for (immediate/delayed) fixed prosthodontic rehabilitation at time of oral cavity reconstruction

Database registering demographic patient data, anesthesia and surgery information, post operative recovery and complications if any.