There is one rather glaring, but inconsequential, error in the article. I'm interested to see if you pick up on it, so I won't say what it is yet.
And, of course, we will publish an erratum later, unless there is a letter to the editor to which we will respond.
Don't forget: Dr. Smith's ECG Blog will be live online at 1:30 PM Central Time on Thursday, Nov. 29, 2012. Video will be broadcast directly on the blog site, and you may call in to ask a question using Skype. The Skype ID is: smithecg