QRS Duration

[Corazon17]

My rabbit hole for today is QRS Duration.

Can people here offer an opinion on what the QRS durations are for the tracings above?

The "paper settings" are 10 and 25.

This came from my Wellue 24-hour monitor.

I am thinking that Q is rather hard to nail down. I have read that Q is the first downward deflection after P, but to me -- especially with regard to top row, third from left -- Q could be in two or three places.

Here's a larger image that's on my ftp site:

dsgftp.com/ekg.JPG

[Cliff_G]

Interesting trace. Was this stick-on electrodes or chest strap, and where were the electrodes of either actually located?

[Corazon17 in reply to Cliff_G]

"Interesting," huh?

It was with the stick-on electrodes.

They were placed above my breasts, angling down at a 45-degree angle from a bit above my sternum toward my left.

I prefer this form of attachment, because with the straps, the device often resets itself, resulting in five or six separate reports for a 24-hour period, rather than a single page.

As you probably know, a Wellue trace can show 24 hours of heart beats. I am wondering if some of these traces might be useful to my cardio person who seems to be looking for an QRS duration that is too wide.

At this moment, I am having trouble confirming that an EKG from my local GP was faxed last week to the cardio person, who is 100 miles away. So if the EKG was lost (seems to be possible), I'm wondering if I can supply needed info. I know that's for them to say, but if anyone has personal experiences with this, I'd like to hear about them.

[Cliff_G in reply to Corazon17]

Thanks. The Wellue placement leads to some odd traces, and in your trace the reason I say "interesting" is because I can't really identify which way the QRS complex is nor the T wave, and the P wave(?) looks very large. I use much the same positioning with the Wellue but get a large negative deflection within the QRS and can't really see what's what. My P wave is very small and the T wave is clear. ChatGPT reckons I am describing a lead V1 shape.

I put the upper right hand electrode almost up to the sternal notch, near the collar bone, then angle the other 45 degrees down to the left as you describe

[Corazon17]

The latest: My cardio P.A. (not an MD or EP) told me that because my QRS widening was less than 25 percent, I can continue flecainide. My QRS went up to 116 from 98, which is 19 percent. The dose is 50x2.

I find it difficult to believe that any conclusion can accurately be made from the two pages of tracing that were submitted, but there was a QRSd number that was printed at the side. So I guess she went by that.