Here’s the conclusion to the January 2011 EMS 12-Lead column “Not So Fast…” at EMS1.com.
Congratulations to Vince DiGiulio for submitting the winning diagnosis!
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Vince DiGiulio
The 12 Rhythms of Christmas: High-Grade AV-Block
Thanks for reading! Correct, in complete AV-block, there shouldn't be any P-waves that conduct (except for the phenomenon of "supernormal conduction," which is rare enough that we won't worry about it). In a standard second degree AV-block, whether Mobitz type I or type II, there will be occasional P-waves that don't conduct. What differentiates "high…
2020-10-06 16:26:49
The 12 Rhythms of Christmas: High-Grade AV-Block
Thanks for reading! Correct, in complete AV-block, there shouldn't be any P-waves that conduct (except for the phenomenon of "supernormal conduction," which is rare enough that we won't worry about it). In a standard second degree AV-block, whether Mobitz type I or type II, there will be occasional P-waves that don't conduct. What differentiates "high…
2020-10-06 16:26:49
Dennis P.
The 12 Rhythms of Christmas: High-Grade AV-Block
So, if there are some P waves that conduct with some that don't, then its a high grade av block.. In CHB, there is no p wave conduction. Right? Nice article.
2020-10-06 00:10:42
The 12 Rhythms of Christmas: High-Grade AV-Block
So, if there are some P waves that conduct with some that don't, then its a high grade av block.. In CHB, there is no p wave conduction. Right? Nice article.
2020-10-06 00:10:42
Phase News
Spot the STEMI #1
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2020-07-20 10:39:10
Spot the STEMI #1
whoah this weblog is excellent i like studying your posts. Keep up the good work! You recognize, many people are hunting around for this information, you could aid them greatly.
2020-07-20 10:39:10
Dr Ibrahim Alharbi
Contiguous and Reciprocal Lead Charts
Does T wave changes in reciprocal leads always positive?
2020-06-26 23:21:22
Contiguous and Reciprocal Lead Charts
Does T wave changes in reciprocal leads always positive?
2020-06-26 23:21:22
Andrew
Cardiac Axis Determination – Part 5
Thank you very much for this! I'm in paramedic school and the paramedic I was working with the other day recommended that I use your website as a resource for cardiology. I really had hardly any understanding of axis calculation until I started reading this section yesterday, and now I can look at a 12-lead…
2020-05-26 20:17:21
Cardiac Axis Determination – Part 5
Thank you very much for this! I'm in paramedic school and the paramedic I was working with the other day recommended that I use your website as a resource for cardiology. I really had hardly any understanding of axis calculation until I started reading this section yesterday, and now I can look at a 12-lead…
2020-05-26 20:17:21
2 Comments
Strong work VinceD! I didn’t follow through on my PAC comment, and missed the obvious VT analogue “fusion complex”. Down at the bottom of the rhythm strip you can see the axis change fairly clearly.
Thanks! I didn’t even notice the upright complex in III through all the baseline movement either, I just blew off those areas of II and III as useless at the time and moved on. I was pushing things a bit by calling it a fusion beat based off the narrower R-wave without that much more conclusive evidence, nice find.