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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 901-910 of 2188 for surgery

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  1. Transcatheter Aortic Valve Replacement to UNload the Left Ventricle in Patients With ADvanced Heart Failure (TAVR UNLOAD)

    Rochester, MN

  2. High-Intensity Aerobic Interval Training in Early Outpatient Cardiac Rehabilitation

    Rochester, MN

  3. A Study of Stress Management Intervention in a Women's Heart Clinic, The Heart SMART Program

    Rochester, MN

  4. A Study to Evaluate the Safety and Effectiveness of the Multi-Electrode Radiofrequency Balloon Catheter for the Treatment of Symptomatic Paroxysmal Atrial Fibrillation

  5. A Study to Evaluate Injectafer® as Treatment for Heart Failure with Iron Deficiency

    Rochester, MN

  6. A Study to Understand How Feedback from Breathing Muscles Influence Blood Flow and Blood Pressure during Exercise and if this can Reduce a Response in Heart Failure Patients with Breathing Muscle Training

    Rochester, MN

  7. A Study of MM-111 and Paclitaxel With Trastuzumab in Patients HER2 Positive Carcinomas of the Distal Esophagus, Gastroesophageal (GE) Junction and Stomach

    Rochester, MN

  8. A Study to Evaluate the Safety and Tolerability of LCZ696 Followed by a 52-week Study of LCZ696 Compared With Enalapril in Pediatric Patients with Heart Failure

    Rochester, MN

  9. Obeticholic Acid (OCA) in Primary Sclerosing Cholangitis (PSC)

    Scottsdale/Phoenix, AZ

  10. Evaluation of the Spiration Valve for Emphysema to Improve Lung Function

    Jacksonville, FL

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