Pain, Postoperative — Naproxen for Acute Pain After Surgery: A Randomized, Placebo-Controlled Trial
Citation(s)
Apfelbaum JL, Chen C, Mehta SS, Gan TJ Postoperative pain experience: results from a national survey suggest postoperative pain continues to be undermanaged. Anesth Analg. 2003 Aug;97(2):534-40, table of contents.
Callesen T, Bech K, Kehlet H Prospective study of chronic pain after groin hernia repair. Br J Surg. 1999 Dec;86(12):1528-31.
Cepeda MS, Carr DB, Miranda N, Diaz A, Silva C, Morales O Comparison of morphine, ketorolac, and their combination for postoperative pain: results from a large, randomized, double-blind trial. Anesthesiology. 2005 Dec;103(6):1225-32.
Hartrick CT Multimodal postoperative pain management. Am J Health Syst Pharm. 2004 Apr;61 Suppl 1:S4-10. Review.
Joshi GP Multimodal analgesia techniques and postoperative rehabilitation. Anesthesiol Clin North America. 2005 Mar;23(1):185-202. Review.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.