s1 November 1965Simple Optical Methods for the Recognition of Atrial Flutter.David A. Rytand, M.D., F.A.C.P., Gene R. Profant, M.D.David A. Rytand, M.D., F.A.C.P.Search for more papers by this author, Gene R. Profant, M.D.Search for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-63-5-907_3 SectionsAboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail ExcerptDifferentiation of atrial flutter from paroxysmal atrial tachycardia with block is especially difficult at relatively slow atrial rates, leading some to regard these two arrhythmias as identical. Difficulties persist even when the selected electrocardiographic lead demonstrates atrial activity clearly, undisturbed by ventricular complexes.Classical continuous electrical activity of flutter may be revealed or exaggerated by obtaining the record at 20 to 30 mm/mv. Unfortunately, often one must deal with a standard record, the patient being unavailable for further study.In such an instance, one may simulate electronic amplification by either of two simple optical methods. In the first, one glances... This content is PDF only. To continue reading please click on the PDF icon. Author, Article, and Disclosure InformationAffiliations: Palo Alto, California PreviousarticleNextarticle Advertisement FiguresReferencesRelatedDetails Metrics 1 November 1965Volume 63, Issue 5Page: 907-908KeywordsArrhythmiaElectrocardiographyParoxysmal atrial tachycardia Issue Published: 1 November 1965 PDF downloadLoading ...