Faraut B, Boudjeltia KZ, Vanhamme L, Kerkhofs M Immune, inflammatory and cardiovascular consequences of sleep restriction and recovery. Sleep Med Rev. 2012 Apr;16(2):137-49. doi: 10.1016/j.smrv.2011.05.001. Epub 2011 Aug 10. Review.
Hoey LM, Fulbrook P, Douglas JA Sleep assessment of hospitalised patients: a literature review. Int J Nurs Stud. 2014 Sep;51(9):1281-8. doi: 10.1016/j.ijnurstu.2014.02.001. Epub 2014 Feb 15. Review.
Hong KS, Kim NR, Song SH, Hong G Cycling of Dexmedetomidine May Prevent Delirium After Liver Transplantation. Transplant Proc. 2018 May;50(4):1080-1082. doi: 10.1016/j.transproceed.2017.11.076.
Nelson LE, Lu J, Guo T, Saper CB, Franks NP, Maze M The alpha2-adrenoceptor agonist dexmedetomidine converges on an endogenous sleep-promoting pathway to exert its sedative effects. Anesthesiology. 2003 Feb;98(2):428-36.
Richardson A, Crow W, Coghill E, Turnock C A comparison of sleep assessment tools by nurses and patients in critical care. J Clin Nurs. 2007 Sep;16(9):1660-8. Epub 2007 Apr 24.
Skrobik Y, Duprey MS, Hill NS, Devlin JW Low-Dose Nocturnal Dexmedetomidine Prevents ICU Delirium. A Randomized, Placebo-controlled Trial. Am J Respir Crit Care Med. 2018 May 1;197(9):1147-1156. doi: 10.1164/rccm.201710-1995OC.
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.
