Curvature of Spine — The Use of Tranexamic Acid to Reduce Perioperative Blood Loss During High Risk Spine Fusion Surgery
Citation(s)
Bernard AC, Davenport DL, Chang PK, Vaughan TB, Zwischenberger JB Intraoperative transfusion of 1 U to 2 U packed red blood cells is associated with increased 30-day mortality, surgical-site infection, pneumonia, and sepsis in general surgery patients. J Am Coll Surg. 2009 May;208(5):931-7, 937.e1-2; discussion 938-9. doi: 10.1016/j.jamcollsurg.2008.11.019. Epub 2009 Mar 26.
Dirkmann D, Görlinger K, Gisbertz C, Dusse F, Peters J Factor XIII and tranexamic acid but not recombinant factor VIIa attenuate tissue plasminogen activator-induced hyperfibrinolysis in human whole blood. Anesth Analg. 2012 Jun;114(6):1182-8. doi: 10.1213/ANE.0b013e31823b6683. Epub 2011 Nov 21.
Elgafy H, Bransford RJ, McGuire RA, Dettori JR, Fischer D Blood loss in major spine surgery: are there effective measures to decrease massive hemorrhage in major spine fusion surgery? Spine (Phila Pa 1976). 2010 Apr 20;35(9 Suppl):S47-56. doi: 10.1097/BRS.0b013e3181d833f6. Review.
Elwatidy S, Jamjoom Z, Elgamal E, Zakaria A, Turkistani A, El-Dawlatly A Efficacy and safety of prophylactic large dose of tranexamic acid in spine surgery: a prospective, randomized, double-blind, placebo-controlled study. Spine (Phila Pa 1976). 2008 Nov 15;33(24):2577-80. doi: 10.1097/BRS.0b013e318188b9c5.
Endres S, Heinz M, Wilke A Efficacy of tranexamic acid in reducing blood loss in posterior lumbar spine surgery for degenerative spinal stenosis with instability: a retrospective case control study. BMC Surg. 2011 Nov 3;11:29. doi: 10.1186/1471-2482-11-29.
Gill JB, Chin Y, Levin A, Feng D The use of antifibrinolytic agents in spine surgery. A meta-analysis. J Bone Joint Surg Am. 2008 Nov;90(11):2399-407. doi: 10.2106/JBJS.G.01179. Review.
Henry D, Carless P, Fergusson D, Laupacis A The safety of aprotinin and lysine-derived antifibrinolytic drugs in cardiac surgery: a meta-analysis. CMAJ. 2009 Jan 20;180(2):183-93. doi: 10.1503/cmaj.081109. Epub 2008 Dec 2. Review.
Kagoma YK, Crowther MA, Douketis J, Bhandari M, Eikelboom J, Lim W Use of antifibrinolytic therapy to reduce transfusion in patients undergoing orthopedic surgery: a systematic review of randomized trials. Thromb Res. 2009 Mar;123(5):687-96. doi: 10.1016/j.thromres.2008.09.015. Epub 2008 Nov 12. Review.
Ozier Y, Bellamy L Pharmacological agents: antifibrinolytics and desmopressin. Best Pract Res Clin Anaesthesiol. 2010 Mar;24(1):107-19. Review.
Tsutsumimoto T, Shimogata M, Ohta H, Yui M, Yoda I, Misawa H Tranexamic acid reduces perioperative blood loss in cervical laminoplasty: a prospective randomized study. Spine (Phila Pa 1976). 2011 Nov 1;36(23):1913-8. doi: 10.1097/BRS.0b013e3181fb3a42.
Tzortzopoulou A, Cepeda MS, Schumann R, Carr DB Antifibrinolytic agents for reducing blood loss in scoliosis surgery in children. Cochrane Database Syst Rev. 2008 Jul 16;(3):CD006883. doi: 10.1002/14651858.CD006883.pub2. 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.