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Drug trials showed neutral mortality in post\u2013myocardial infarction patients and those with heart failure. This is a review of postmarket data, including real-world efficacy and safety in a variety of populations. Dofetilide has been used off-label with success in patients with paroxysmal atrial fibrillation and atrial flutter, as well as atrial tachycardia and ventricular tachycardia. The real-world acute conversion rate of atrial fibrillation and atrial flutter is higher than that reported in clinical trials. Dofetilide has an acceptable safety profile when initiated (or reloaded) under hospital monitoring and dosed according to creatinine clearance. Dofetilide is well tolerated and a good choice for patients with acceptable renal function and a normal QT interval, especially if atrioventricular nodal blockade needs to be avoided.<\/jats:p>","DOI":"10.1177\/1074248418784288","type":"journal-article","created":{"date-parts":[[2018,6,25]],"date-time":"2018-06-25T22:24:14Z","timestamp":1529965454000},"page":"3-10","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":18,"title":["A Quarter of a Century Later: What is Dofetilide\u2019s Clinical Role Today?"],"prefix":"10.1177","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6722-7870","authenticated-orcid":false,"given":"Deborah L.","family":"Wolbrette","sequence":"first","affiliation":[{"name":"Heart and Vascular Institute, Penn State University College of Medicine, The Milton S. 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