Eustachian Tube Disorder — Evaluating Changes in Middle Ear Pressure Caused by CPAP
Citation(s)
Akbulut S, Demir MG, Salepci BM, Gungor GA, Demir N, Berk D, Cakan D Efficacy of continuous positive airway pressure on middle ear atelectasis: A double-blind placebo-controlled clinical trial. Laryngoscope. 2016 Jul;126(7):1649-55. doi: 10.1002/lary.25735. Epub 2015 Oct 20.
Drake-Lee AB, Casey WF, Ogg TW Anaesthesia for myringotomy. The effect of nitrous oxide and intermittent positive pressure ventilation in children with secretory otitis media. Anaesthesia. 1983 Apr;38(4):314-8.
Lin FY, Gurgel RK, Popelka GR, Capasso R The effect of continuous positive airway pressure on middle ear pressure. Laryngoscope. 2012 Mar;122(3):688-90. doi: 10.1002/lary.22442. Epub 2012 Jan 17.
Sivri B, Sezen OS, Akbulut S, Coskuner T The effect of continuous positive airway pressure on middle ear pressure. Laryngoscope. 2013 May;123(5):1300-4. doi: 10.1002/lary.23896. Epub 2013 Apr 2.
Evaluating Changes in Middle Ear Pressure Caused by CPAP
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.
