Abstract
Letters15 December 1990Syncope and Functional Infranodal BlockArchana Patel, MD, Daniel Goldman, MDArchana Patel, MDSearch for more papers by this author, Daniel Goldman, MDSearch for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-113-12-994 SectionsAboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail ExcerptTo the Editors:We read with interest the article by Manolis and colleagues (1) and offer the following comments. Their Figure 6 shows an early atrial premature beat that blocks below the bundle of His, and in the legend the authors state, "The probability of intermittent heart block causing syncope in this patient was sufficiently high to merit a permanent pacemaker" (1). We would like to point out that block of early atrial premature beats below the His bundle can be a physiologic type of block with no pathologic significance, because in some patients the effective refractory period of the...
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