An observational study in Mitral Valve Prolapse and Ventricular Arrhythmias and Cardiac Arrest, sponsored by Oslo University Hospital. Recruiting at 1 site in Norway. Per ClinicalTrials.gov, last updated 2026-09-29.
Sponsored by Oslo University Hospital · Observational
Mitral valve prolapse (MVP) is common with a 2-3 % prevalence in the general association and generally associated with a favorable prognosis. However, a subgroup of MVP patients, known as arrhythmic mitral valve prolapse (AMVP) has an increased burden of severe ventricular arrhythmias and risk of sudden cardiac death. Identifying high risk patients who may benefit of potential implantable cardioverter-defibrillator (ICD) implantation is therefore critically important. Risk stratification in AMVP is still challenging, and the ability to estimate arrhythmic risk at the individual level is limited.
Mitral valve prolapse (MVP) is common with a 2-3 % prevalence in the general association and generally associated with a favorable prognosis. However, a subgroup of MVP patients, known as arrhythmic mitral valve prolapse (AMVP) has an increased burden of severe ventricular arrhythmias and risk of sudden cardiac death. Identifying high risk patients who may benefit of potential implantable cardioverter-defibrillator (ICD) implantation is therefore critically important. Risk stratification in AMVP is still challenging, and the ability to estimate arrhythmic risk at the individual level is limited.
The aim of this study is to develop and validate a risk prediction model for severe ventricular arrhythmias in patients with AMVP, with the goal of improving individualized risk stratification and identying patients who may warrant consideration for ICD therapy.
This is a retrospective, multicenter longitudinal cohort study of patients with mitral valve prolapse and ventricular arrhythmias. Baseline characteristics are defined based on the clinical status at the index event and during the subsequent six months. Clinical events occurring six months or more after the index event are considered follow-up events.
47 studies on the registry are indexed under Mitral Valve Prolapse; 11 are open to participants now.
This study's planned enrollment of 500 is above the median of 150 across 25 observational studies indexed under Mitral Valve Prolapse.
Browse Mitral Valve Prolapse studies →Oslo University Hospital is the lead sponsor of 834 studies on the registry; 149 are open to participants now.
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Mitral Valve Prolapse with Ventricular Arrhythmias
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
AND
- Follow up >6 months
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
ECG (electrocardiogram)
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
QT and QTc
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Patients with mitral valve prolapse and ventricular arrhythmias will be included in the study cohort. Clinical, echocardiographic, arrhythmic and other cardiac imaging variables will be evaluated in relation to the occurence of life-threatening ventricular arrhythmias. No study-specific intervention is performed.
Other: Risk prediction model
A multivariable risk prediction model will be developed and validated to estimate the individual risk of severe ventricular arrhythmias in patients with mitral valve prolapse. The model will be based on clinical, electrocardiographic, arrhythmic, echocardiographic and CMR variables. The risk prediction model is evaluated as part of this observational study and does not constitute a study-specific therapeutic or diagnostic intervention.
Occurence and Number of Severe Ventricular Arrhythmias in participants
Occurence and number of severe ventricular arrhythmias, defined as ventricullar fibrillation, sustained ventricular tachycardia, aborted cardiac arrest or appropriate implantable cardioverter-defibrillator (ICD) therapy, occuring more than 1 month after baseline.
Time frame: From >6 months after baseline until the end of available follow-up, minimum follow-up 6 months
Plan to share: No — Individual participant data will not be made publicly available due to data protection requirements, ethical approvals, and data-sharing agreements betweens participating institutions.
Started Aug 2026 (actual). Primary completion is estimated for Sep 2035, 109 months after the start.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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