Bolourchi M, Batra AS Diagnostic yield of patch ambulatory electrocardiogram monitoring in children (from a national registry). Am J Cardiol. 2015 Mar 1;115(5):630-4. doi: 10.1016/j.amjcard.2014.12.014. Epub 2014 Dec 18.
Cheung CC, Kerr CR, Krahn AD Comparing 14-day adhesive patch with 24-h Holter monitoring. Future Cardiol. 2014 May;10(3):319-22. doi: 10.2217/fca.14.24.
Lobodzinski SS ECG patch monitors for assessment of cardiac rhythm abnormalities. Prog Cardiovasc Dis. 2013 Sep-Oct;56(2):224-9. doi: 10.1016/j.pcad.2013.08.006.
Rosenberg MA, Samuel M, Thosani A, Zimetbaum PJ Use of a noninvasive continuous monitoring device in the management of atrial fibrillation: a pilot study. Pacing Clin Electrophysiol. 2013 Mar;36(3):328-33. doi: 10.1111/pace.12053. Epub 2012 Dec 13.
Schreiber D, Sattar A, Drigalla D, Higgins S Ambulatory cardiac monitoring for discharged emergency department patients with possible cardiac arrhythmias. West J Emerg Med. 2014 Mar;15(2):194-8. doi: 10.5811/westjem.2013.11.18973.
Tung CE, Su D, Turakhia MP, Lansberg MG Diagnostic Yield of Extended Cardiac Patch Monitoring in Patients with Stroke or TIA. Front Neurol. 2015 Jan 12;5:266. doi: 10.3389/fneur.2014.00266. eCollection 2014.
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.
