compensatory and noncompensatory pause

[jok200]

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I am having a great deal of difficulty understanding the difference. I understand that after a premature complex their is either a pause which is twice the normal p-p interval or their is not a pause and the next complex occurs. I am confused as to which is compensatory and which is not and what EXACTLY DOES THAT MEAN.??????

-sorry, but just a bit tired of reading explanations that I don't understand.

thanks again guys-

 

[MagicalHobo]

I think it has to do with the refractory period of the tissue that undergoes a premature beat.
If you have a VPC, usually they cause compensatory pauses because the SA node tries to fire while the ventricle is still refractory so hence the next normal sinus beat is twice the PP internal ( the SA node tried to fire at the usual time after it was reset by the VPC but the ventricle was still refractory so the signal doesn't propagate and then you have to wait for the SA node to fire again). Where as a non compensatory pause the tissue isn't refractory by the time the next sinus beat arrives after the premature complex, hence its less than 2x P-P interval.

Does that make sense? Sorry I am not very good at explaining things.

 

[gutonc]

Why did you encourage him?