Holm C, Thomsen LL, Norgaard A, Langhoff-Roos J Single-dose intravenous iron infusion or oral iron for treatment of fatigue after postpartum haemorrhage: a randomized controlled trial. Vox Sang. 2017 Apr;112(3):219-228. doi: 10.1111/vox.12477. Epub 2017 Feb 15.
Shanbhag SP, Solano MA, Botros MA, Khanuja HS Treating Preoperative Anemia to Improve Patient Outcomes After Orthopaedic Surgery. J Am Acad Orthop Surg. 2019 Dec 15;27(24):e1077-e1085. doi: 10.5435/JAAOS-D-18-00810.
Sharif PS, Abdollahi M The role of platelets in bone remodeling. Inflamm Allergy Drug Targets. 2010 Dec;9(5):393-9. doi: 10.2174/187152810793938044.
Shin HW, Park JJ, Kim HJ, You HS, Choi SU, Lee MJ Efficacy of perioperative intravenous iron therapy for transfusion in orthopedic surgery: A systematic review and meta-analysis. PLoS One. 2019 May 6;14(5):e0215427. doi: 10.1371/journal.pone.0215427. eCollection 2019.
Spahn DR Anemia and patient blood management in hip and knee surgery: a systematic review of the literature. Anesthesiology. 2010 Aug;113(2):482-95. doi: 10.1097/ALN.0b013e3181e08e97.
Strauss WE, Auerbach M Health-related quality of life in patients with iron deficiency anemia: impact of treatment with intravenous iron. Patient Relat Outcome Meas. 2018 Aug 27;9:285-298. doi: 10.2147/PROM.S169653. eCollection 2018.
Theusinger OM, Leyvraz PF, Schanz U, Seifert B, Spahn DR Treatment of iron deficiency anemia in orthopedic surgery with intravenous iron: efficacy and limits: a prospective study. Anesthesiology. 2007 Dec;107(6):923-7. doi: 10.1097/01.anes.0000291441.10704.82.
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.