- 0May 15, '12 by markgolfaMay 15 by markgolfa Hi everybody It is my first time to post a question, but I read many conversations here and found them super helpful!
So, my question is: what is the difference between WAP and PAC? From what I understand, both are ectopic and produce el. signal earlier than SA would, therefore both produce disrythmia, in both P waves varies. Although, I am not sure about PR intervals, I think they both are unequal. So, are WAP and PAC two names of the same condition? I am getting ready for ECG test and need help with understanding it.
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- 1May 16, '12 by 13thSpadewap (wandering atrial pacemaker) is when the cardiac pacemaker alternates between the sa node and the av node, resulting in p wave changes. the normal sinus beats will have typical p waves, while the atrial beats will have flattened or inverted p waves.
a pac (premature atrial contraction) is a an ectopic beat originating somewhere in the atria before the sa node fires.
they are similar concepts, but wap is considered an arrhythmia (non-normal heart rhythm). think of it as a sinus rhythm with changing p wave configurations (caused by changing pacer origins) , whereas a pac is a single, premature ectopic beat.
does that help any?