Surgery — Bier's Block Versus Mini-bier's Block in Patients Undergoing Hand Surgery
Citation(s)
Arslanian B, Mehrzad R, Kramer T, Kim DC Forearm Bier block: a new regional anesthetic technique for upper extremity surgery. Ann Plast Surg. 2014 Aug;73(2):156-7. doi: 10.1097/SAP.0b013e318276da4c.
Chiao FB, Chen J, Lesser JB, Resta-Flarer F, Bennett H Single-cuff forearm tourniquet in intravenous regional anaesthesia results in less pain and fewer sedation requirements than upper arm tourniquet. Br J Anaesth. 2013 Aug;111(2):271-5. doi: 10.1093/bja/aet032. Epub 2013 Mar 18.
Chong AK, Tan DM, Ooi BS, Mahadevan M, Lim AY, Lim BH Comparison of forearm and conventional Bier's blocks for manipulation and reduction of distal radius fractures. J Hand Surg Eur Vol. 2007 Feb;32(1):57-9. Epub 2006 Nov 22.
Guay J Adverse events associated with intravenous regional anesthesia (Bier block): a systematic review of complications. J Clin Anesth. 2009 Dec;21(8):585-94. doi: 10.1016/j.jclinane.2009.01.015. 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.
