Are p and r wave amplitudes affected by pacing

I'm trying so hard to understand this, but I'm confused. I was just reading my operation report trying to take a few things in.

It says that my p waves are 4.1mv and r waves are >12mv.

What does this mean?


P and R waves

by AgentX86 - 2021-07-13 23:56:12

If you're not actively pacing (sensing), no, the pacemaker is just watching what what the heart is doing. If you're pacing, sure, it affects the P and R waves.  It's creating one, or the other, or both.  The P wave is the atria depolarizing and the QRS complex is the ventricles depolarizing.  The pacemaker is triggering these events.

Still kinda confused..

by Mae11 - 2021-07-14 00:06:40

Hmm, okay. So do these numbers seem normal? Everything I am seeing says that they are far above the normal standard. I've seen that p wave shouldn't exceed 0.3 mv and r wave standard is 1.2. 

Pacing P&R waves

by Selwyn - 2021-07-14 07:32:27

Difficult to interpret these figures as they are dependent on the type of pacing set up you receive ( eg.DDDR) and where your pacing leads are situated. If your echocardiogram has been reported as normal, you can forget about ECG P, R,  voltages.

In general, for non paced people- big Ps are for big atria, big Rs for big ventricles.

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