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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 1-10 of 1187 for surgery

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  1. Patient Satisfaction in Mohs Micrographic Surgery with Supplemental Lidocaine Jelly

    Scottsdale/Phoenix, AZ

  2. Nicotine Administration and Post-operative Opioid Use With Bariatric Surgery

    Rochester, MN

  3. A Study of Vismodegib With Surgery in Patients With Previously Untreated Basal Cell Carcinoma

    Scottsdale/Phoenix, AZ

  4. Ergonomics in Robotic Surgery

    Rochester, MN

  5. EPAD Monitoring of Patients Undergoing Robotic Assisted Laparoscopic Genitourinary Surgery

    Jacksonville, FL

  6. Post Approval Study of the CyPass System in Patients with Primary Glaucoma Undergoing Cataract Surgery

    Jacksonville, FL

  7. A Study to Determine the Effects of Blocking the Receptors of GLP-1 on Appetite after Bariatric Surgery

    Rochester, MN

  8. A Study of the Effects of Ghrelin on Gastrointestinal Symptoms and Food Intake After Bariatric Surgery

    Rochester, MN

  9. High Ankle Block Versus Regional Block for Acute Pain Control After Ankle Surgery

    Jacksonville, FL

  10. Detection of Biomarker in Chronic Rhinosinusitis Patients by Analyzing Nasal Sinus Secretions and Tissue via Endoscopic Sinus Surgery

    Rochester, MN

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