Talk:First degree AV block

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If the impulse is not "blocked" then why are you refering to this as first degree AV block, instead of only "prolonged PR interval" The name first degree AV block is misleading. With this reasoning then there's no trifascicular block. It is reasonable to assume that block of all three fascicles would lead to total AV block

Well, while it might not seem logical, nonetheless, that's what it's called. We're referring to it that way because that's what everybody else refers to it as. It may help you to think of "prolongation" and "blocking" as synonyms in this instance, but even if it doesn't you'll have to get used to the idea that "prolonged PR interval" = "first degree heart block", because we're not just making it up. As an overview, it would be fair to say "1°": every atrial beat triggers a ventricular beat; "2°": some atrial beats trigger ventricular beats; and "3°" no atrial beats trigger ventricular beats. - Nunh-huh 23:59, 26 Dec 2004 (UTC)