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The Dual Chamber & Atrial Tachyarrhythmias Adverse Events Study (DATAS) was designed to analyze the ability of dual chamber ICDs (DDED), to reduce clinically significant adverse events as compared to single chamber ICD in a non selected population with conventional indication of ICD implantation.
Single chamber (SC) implantable cardioverter defibrillators (ICDs) have several limitations that might be relevant during follow up, like atrial pacing requirements, inadequate therapies, sustained atrial tachyarrhythmias and difficulties to achieve an accurate diagnosis of the arrhythmia. Dual chamber (DC) ICDs offer an attractive rationale solution, although controversy remains if the costs and complexity of the implants offer a real clinical advantage.
The DATAS is a, prospective, multicentre, randomized, open labelled study, with three arms (two of them cross-over and the third parallels the other two)
The primary objective of this trial is to determine whether use of DDED ICD results in a significant decrease in the number of primary end points.
The primary end point is a composite comprising four so-denominated "Clinically Significant Adverse Events":
1. all-cause mortality
2. invasive intervention, hospitalization (>24 h) or prolongation of hospitalization due to cardiovascular cause
3. inappropriate shocks (two or more episodes with inappropriate shocks)
4. sustained symptomatic atrial tachyarrhythmias that (a) require urgent termination or (b) last more than 48 h leading to therapeutic intervention.
Secondary objectives are:
1. Number of each of the components of the CSAE.
2. Arrhythmia related: atrial tachyarrhythmia, frequency and burden, ventricular tachyarrhythmia frequency and burden number of appropriate shocks, number of inappropriate shocks, need for reprogramming, need for medication/RFA for arrhythmia control, pacemaker syndrome and development of dual chamber pacing indication.
3. Cardiovascular related: NYHA functional class, exercise capacity, left ventricular ejection fraction (LVEF), reduction of medication (diuretics.).
4. Quality of life: evaluated by the SF-36, Minnesota living test, with heart failure and Symptom Checklist instruments.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Educational/Counseling/Training
Implantable Cardioverter Defibrillator
Active, not recruiting
Medtronic Bakken Research Center
Published on BioPortfolio: 2014-07-23T21:48:45-0400
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