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A volunteer subject with no known significant health problems who participates in research to test a new drug, device or intervention. These volunteers are recruited to serve as controls for patient groups. Healthy volunteers receive the same test, procedure, or drug the patient group receives.

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During the early phases (phases 1 and 2), researchers assess safety, side effects, optimal dosages and risks/benefits. In the later phase (phase 3), researchers study whether the treatment works better than the current standard therapy. They also compare the safety of the new treatment with that of current treatments. Phase 3 trials include large numbers of people to make sure that the result is valid. There are also less common very early (phase 0) and later (phase 4) phases. Phase 0 trials are small trials that help researchers decide if a new agent should be tested in a phase 1 trial. Phase 4 trials look at long-term safety and effectiveness, after a new treatment has been approved and is on the market.

Search Results 21-28 of 28 for

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  1. A Study to Evaluate Catheter Ablation Outcomes in Athletes with Atrial Fibrillation

    Scottsdale/Phoenix, AZ

  2. A Study of In Vitro Mapping of Cardiac Tissue Obtained from Patients with Refractory Arrhythmias who Underwent Heart Transplant or Replacement with Mechanical Heart

    Rochester, MN

  3. Prospective Evaluation Analysis and Kinetics Registry (PEAKS)

    Rochester, MN

  4. A Study of the Role of the Pericardium in Cardiac Arrhythmias

    Rochester, MN

  5. A Study to Determine the Incidence of Atrial and Ventricular Arrhythmias in Patients with Hypertrophic Cardiomyopathy

    Rochester, MN

  6. A Study to Evaluate Potential Myocardial Injury Following Elective Direct Current Cardioversion

    Rochester, MN

  7. A Study of Arrhythmia in Eisenmenger’s Syndrome

    Jacksonville, FL, Rochester, MN

  8. Ventricular Arrhythmia Increases Sympathetic Activity Determined By A Skin Nerve Recording

    Rochester, MN

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