Primary Osteoarthritis of Knee Nos — Intrathecal Morphine for Unilateral Total Knee Arthroplasty
Citation(s)
Hassett P, Ansari B, Gnanamoorthy P, Kinirons B, Laffey JG Determination Of The Efficacy And Side-effect Profile Of Lower Doses Of Intrathecal Morphine In Patients Undergoing Total Knee Arthroplasty. BMC Anesthesiol. 2008 Sep 24;8:5. doi: 10.1186/1471-2253-8-5.
Ibrahim MS, Alazzawi S, Nizam I, Haddad FS An evidence-based review of enhanced recovery interventions in knee replacement surgery. Ann R Coll Surg Engl. 2013 Sep;95(6):386-9. doi: 10.1308/003588413X13629960046435. Review.
Kunopart M, Chanthong P, Thongpolswat N, Intiyanaravut T, Pethuahong C Effects of single shot femoral nerve block combined with intrathecal morphine for postoperative analgesia: a randomized, controlled, dose-ranging study after total knee arthroplasty. J Med Assoc Thai. 2014 Feb;97(2):195-202.
McCartney CJ, Nelligan K Postoperative pain management after total knee arthroplasty in elderly patients: treatment options. Drugs Aging. 2014 Feb;31(2):83-91. doi: 10.1007/s40266-013-0148-y. Review.
Nakai T, Tamaki M, Nakamura T, Nakai T, Onishi A, Hashimoto K Controlling pain after total knee arthroplasty using a multimodal protocol with local periarticular injections. J Orthop. 2013 Mar 17;10(2):92-4. doi: 10.1016/j.jor.2013.02.001. eCollection 2013.
Rathmell JP, Pino CA, Taylor R, Patrin T, Viani BA Intrathecal morphine for postoperative analgesia: a randomized, controlled, dose-ranging study after hip and knee arthroplasty. Anesth Analg. 2003 Nov;97(5):1452-7.
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.
