s1 May 1966Comparison of Fibrillatory Waves and P-Waves in the Electrocardiogram.James J. Morris Jr., M.D., Robert H. Peter, M.D., Henry D. McIntosh, M.D., F.A.C.P.James J. Morris Jr., M.D.Search for more papers by this author, Robert H. Peter, M.D.Search for more papers by this author, Henry D. McIntosh, M.D., F.A.C.P.Search for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-64-5-1152_3 SectionsAboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail ExcerptWith atrial fibrillation present, little diagnostic or functional significance has been attached to the atrial fibrillatory waves. With sinus rhythm present, P wave analysis is of clinical significance. Previous studies analyzing the P wave have shown that the index termed the P terminal force (Ptf), when abnormal (< - 0.4), is a sensitive index of left atrial hypertrophy. In the present study fibrillatory waves and the Ptfs have been compared in the same patients in order to evaluate the clinical implications of fibrillatory wave amplitude.The maximum amplitude of the fibrillatory wave in each of 100 patients was measured in... This content is PDF only. To continue reading please click on the PDF icon. Author, Article, and Disclosure InformationAffiliations: Durham, North Carolina, and Portsmouth, Virginia PreviousarticleNextarticle Advertisement FiguresReferencesRelatedDetails Metrics 1 May 1966Volume 64, Issue 5Page: 1152-1153KeywordsAtrial fibrillationElectrocardiography Issue Published: 1 May 1966 PDF downloadLoading ...