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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.

Study phase

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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 101-110 of 2189 for surgery

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  1. Periarticular Bupivacaine + Meloxicam ER Solution Versus Standard Practice During Total Knee Arthroplasty

    Rochester, MN

  2. A Study to Assess Cisplatin and Combination Chemotherapy in Treating Children and Young Adults with Hepatoblastoma or Liver Cancer After Surgery

    Rochester, MN

  3. Ranolazine for Incomplete Vessel Revascularization Post-Percutaneous Coronary Intervention (PCI)

  4. Assessing the Accuracy of Tumor Biopsies After Chemotherapy to Determine if Patients Can Avoid Breast Surgery

    Rochester, MN

  5. Study of Endocrine Therapy With or Without Abemaciclib (LY2835219) Following Surgery in Participants With Breast Cancer

    Scottsdale/Phoenix, AZ, Jacksonville, FL, Rochester, MN

  6. A Study to Evaluate Operative Versus Non-Operative Treatment for Atraumatic Rotator Cuff Tears

    Scottsdale/Phoenix, AZ

  7. A Study of Clinical Outcomes of Ultrasound-guided Carpal Tunnel Release Performed in a Procedural Room Setting

    Albert Lea, MN

  8. A Study to Determine the Feasibility of Transanal Robot-assisted Resection of Distal Colorectal Lesions Using the Medrobotics Flex® System

    Rochester, MN

  9. A Study to Evaluate the Effectiveness of a Dexamethasone Eluting Slim Modiolar Electrode in the Reduction of Fibrosis in a Newly Implanted Adult Population with Bilateral, Post-Linguistic, Moderate to Profound Sensorineural Hearing Loss

    Rochester, MN

  10. Automatic Periodic Stimulation and Continuous Electromyography (EMG) for Facial Nerve Monitoring During Parotidectomy

    Rochester, MN

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