From the minimal experience I've had so far, I've caught on that a pt in A.Fib with a HR, say in the 150's, is having a rapid ventricular response. Is that right? Even so, I still don't quite understand what's going on with a pt in A.Fib with RVR (and it's the RVR part I don't get). Anyone care to explain or lead me in the right direction?
And with abberancy... When this is going on, the QRS looks wider? If I'm even right, that's ALL I know about abberancy. So I could use some clarification there too.
I don't remember ever hearing these terms in nursing school, and I'm not having much luck finding this information online (although I'm sure it's out there somewhere). So any help from you guys would be VERY appreciated!
Apr 29, '07
Abberant beats do not take the normal electrical pathway. Think of it as the electrical activity taking the long way around. The cells still depolarize but the conduction is slower because it is not being passed down through the normal and fast specialized electrical cells of the SA-AV-Bundles-perkinges-etc.
The difficulty lies in distinguishing afib with RVR and abberancy from Vtach. It will appear as a wide complex tachycardia. A rate above 150 may appear regular. There are ways to determine whether VT or abberancy with an ECG but I don't know them.... it has to do with difflection in certain leads. In most cases, I would say it is just treated as VT since this is usually considered an emergent situation especially if the pt is symptomatic.
Last edit by TachyBrady on Apr 29, '07