Discussion for 90 year old male CC: Chest pain– Revisited

We are revisiting the Discussion for 90 year old male CC: Chest pain.  You may wish to review the case.

You may recall we pointed out that the VT appeared be regularly irregular, with alternating cycle lengths:

What follows is a "Guest Post" by Jason Roediger, CCT/CRAT, and Ken Grauer, M.D. (www.kg-ekgpress.com):

"The rhythm represents VT for all of the morphologic reasons discussed in your explanation. The reason for the repetitive regular irregularity of this ventricular rhythm is that the tracing represents VT with retrograde 3:2 Wenckebach Exit block out of the ventricular focus. The discharge rate of the ectopic ventricular focus is ~240/minute.

This results in a manifest ventricular rate that is about 2/3 the presumed discharge rate and reduces the manifest rate to ~160/minute. Note the characteristic Wenckebach periodicity conducting retrograde (with a 3:2 ratio) out of the ventricular focus in the laddergram below. FINAL point: in addition to the bizarre marked axis deviation, the entirely negative QRS in V6 with delayed nadir and other morphologic clues you state in support of the diagnosis of VT-WPW can be ruled out by the negative QS complexes in V4-V6 (Brugada)."

 

Many thanks to Jason and Ken for their insightful analysis. We are always learning!

 

 

 

 

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Comments
michelle
68 Year Old Male: Chest Tightness – Part 1
i see some depression and slight elevation in the st segment in the avr. i would alert the stemi crew to stand by.
2015-07-27 17:15:03
sean morrison
68 Year Old Male: Chest Tightness – Part 1
It's the big one Weezy! LAD
2015-07-27 12:48:03
Ryan Lord
68 Year Old Male: Chest Tightness – Part 1
Had the exact same last night but a known AF patient pain commenced after 2 hours of palpitations and described as like a previous MI. Her rate was up at around the 160 mark... Had the widespread depression but elevated aVR and V1. Discussed with Cath Lab and preceded to A&E next door for review,…
2015-07-27 12:14:23
Brendan
63 Year Old Female, CC: Neck and Arm Pain
Everyone providing oxygen should try and read the results of the AVOID trial...
2015-07-27 03:15:56
Brooks Walsh MD
Computer misses it, but the medic catches it.
Well this blog is a great place to start! We cover most every aspect of emergency electrocardiography, with a variety of authors, and multiple perspectives, usually in a clinical context. If it is a book you are looking for, I prefer Ken Grauer's. I started with Dr Grauer as a paramedic student and I still…
2015-07-27 01:45:18

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