Pacemaker Clinical Trial
Official title:
A Retrospective Trial to Evaluate the Micra Pacemaker
This is a retrospective study of our patient population implanted with the Medtronic's Leadless single-chamber ventricular pacemakers.
This protocol outlines the methods on the Micra Pacemaker. The Micra Transcatheter Pacemaker System is a miniaturized single chamber pacemaker system that is delivered via catheter through the femoral vein and is implanted directly inside the right ventricle of the heart. The Micra device eliminates the need for a device pocket and insertion of a pacing lead, thereby eliminating lead and pocket related complications associated with traditional pacing systems while providing similar pacing benefits. The US Food and Drug Administration (FDA) approved the Micra system on April 6, 2016, for the following conditions: - symptomatic paroxysmal or permanent high-grade atrioventricular block (AV) in the presence of atrial fibrillation (AF) - symptomatic paroxysmal or permanent high-grade AV block in the absence of AF, as an alternative to dual chamber pacing, when atrial lead placement is considered difficult, high risk, or not deemed necessary for effective therapy - symptomatic bradycardia-tachycardia syndrome or sinus node dysfunction (sinus bradycardia or sinus pauses), as an alternative to atrial or dual chamber pacing, when atrial lead placement is considered difficult, high risk, or not deemed necessary for effective therapy The FDA approved the Micra system on the basis of clinical trial evidence from the Micra Investigational Device Exemption (IDE) study (NCT02488681). On January 18, 2017, the Centers for Medicare and Medicaid Services (CMS) issued a final National Coverage Determination (NCD) on leadless pacemakers, providing for coverage with Coverage with Evidence Development (CED) of approved leadless pacemakers for approved indications (CAG-00448N). The NCD requires the research study conducted as part of CED to address the following research questions: 1. What are the peri-procedural and post-procedural complications of leadless pacemakers? 2. What are the long-term outcomes of leadless pacemakers? 3. What are the effects of patient characteristics (age, gender, comorbidities) on the use and health effects of leadless pacemakers? In addition, CMS outlined six evidentiary gaps in the final NCD for leadless pacemakers: 1. What are the peri-procedural and post-procedural complications, and long term outcomes of leadless pacemakers? 2. Are leadless pacemakers equivalent or superior to conventional pacemaker's in general clinical practice? 3. What are the infection rates, the long-term hemodynamic effects, and the rates of formation of thrombi? 4. What are the patient demographics and effects of patient characteristics (age, gender, comorbidities) on the use and health effects of leadless pacemakers? 5. What are the device-related issues (handling of end of battery life; effects of having multiple leadless pacemakers implanted; rate of device dislodgement; and the possibility of device extractions)? 6. How are operators and facility characteristics related to peri-procedural and post-procedural complications? ;
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