| 词条 | Concealed conduction |
| 释义 |
A common example would be an interpolated PVC (a type of premature ventricular contraction) during normal sinus rhythm; the PVC does not cause an atrial contraction, because the retrograde impulse from the PVC does not completely penetrate the AV node. However, this AV node stimulation can cause a delay in subsequent AV conduction by modifying the AV node's subsequent conduction characteristics. Hence, the P-R interval after the PVC is longer than the baseline P-R interval.{{citation needed|date=August 2018}} Another variation on this concept is seen in atrial flutter. As a result of the rapid atrial rate, some of the atrial activity fails to get through the AV node in an antegrade direction but can alter the rate at which a subsequent atrial impulse is conducted. In this circumstance, an alteration in the F-wave to QRS relationship is seen.{{citation needed|date=August 2018}} See also
References1. ^{{cite book |last1=Josephson |first1=Mark E. |title=Clinical Cardiac Electrophysiology: Techniques and Interpretations |date=2008 |publisher=Lippincott Williams & Wilkins |isbn=9780781777391 |page=145 |url=https://books.google.com/books?id=0Q--epKpkWYC&pg=PA145&ved=0ahUKEwjwrZHC0dPdAhUR2lMKHQH2BlkQ6AEIJzAA&q=Concealed%20conduction |accessdate=24 September 2018 |language=en}} {{Medicine|state=collapsed}}{{med-sign-stub}} 2 : Cardiac electrophysiology|Medical signs |
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