could someone take a look at these ecgs for accuracy?

I tried posting this in CCU forum but I guess it's slow...so I hope it's okay to ask here.

I'm trying to do some preliminary studying before I have these classes for my new job at the hospital and I have this site from when I was in school. Some of these on the website seem to match okay for what I'm looking at in a book (Lippencott's ecg interpretation) but the 4th group the junctional arrythmias seem to be way off from what's in the book so I'm wondering if the site isn't good.

I did order Dubin's book but it's not in yet. I heard that one is really good for teaching.

When you get the 1st page, just click on the "play" button to bypass signing in. Then there's a "learn" button at the top that will show what the different arrythmias look like when you click on the name.

Six Second ECG Simulator

Thanks for any help.
I like that

I've used this site before. The junctional rhythms look right to me.

The junctional looks right on. No P waveAre you confused about the accelerated junctional rhythms? There you can get a antegrade or retrograde P wave

Quote from JustinAllenThe junctional looks right on. No P waveAre you confused about the accelerated junctional rhythms? There you can get a antegrade or retrograde P wave

We used the same program when I oriented and the "junctional tachy" example was a bit confusing at first. As a general rule, a junctional rhythm will still have a narrow QRS since the impulses are originating just above the bundle branches. In the example given here, there is both a junctional rhythm and a bundle branch block, which makes it trickier. The wider QRS clues you into the bundle branch block, and it is still not as wide as a ventricular rhythm.