tag:blogger.com,1999:blog-3364570834099131201.post1170516066839298927..comments2024-03-23T08:57:50.965-04:00Comments on ECG Interpretation: ECG Blog #214 (ECG MP-31) — 12 Leads are Better than OneECG Interpretationhttp://www.blogger.com/profile/02309020028961384995noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-3364570834099131201.post-52390478356777683052021-04-19T00:03:42.114-04:002021-04-19T00:03:42.114-04:00My pleasure! — :)My pleasure! — :)ECG Interpretationhttps://www.blogger.com/profile/02309020028961384995noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-10430869240050396392021-04-17T15:42:35.739-04:002021-04-17T15:42:35.739-04:00Great...sir n thanks for whole explanationGreat...sir n thanks for whole explanationRavi Sharmahttps://www.blogger.com/profile/02241865444622835578noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-65756905872186606062021-04-16T09:18:28.550-04:002021-04-16T09:18:28.550-04:00THANKS as always so much for your insightful comme...THANKS as always so much for your insightful comments. As to A — Depending on WHERE in the atria a PAC arises — the PR interval COULD be as short as the one seen here. And while true that a PAC more likely manifests a less-than-complete compensatory pause — there is OVERLAP in both ways (ie, both for PACs and PVCs) regarding duration of the post-ectopic pause, depending on whether a PVC conducts retrograde or not (and if so, for how far) — and for PACs depending on how much SA node suppression is seen — so in my opinion — it’s not possible to rule out PACs solely from the appearance of Tracing A.<br /><br />As to B — On the 12-lead ECG — I’m not convinced that the negative “bump” in V1 is a retrograde P wave — as I don’t see any convincing suggestion of retrograde P waves elsewhere ( = my opinion). — 1:1 retrograde VA conduction could be seen with either reentry SVT rhythms or VT. Retrograde Wenckebach conduction points to VT — but to me, even though there is variation in morphology of this retrograde bump in V1 — I see slight variation in the QRST in mulitple leads, such that I’m not convinced this confirms retrograde atrial activity. And on the 12-lead for B — I don’t see a negative bump in every 4th T wave … Again — you could be correct. I just see it differently. THANKS again for your comments! — :)ECG Interpretationhttps://www.blogger.com/profile/02309020028961384995noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-51481423711725538592021-04-16T09:05:36.591-04:002021-04-16T09:05:36.591-04:00Thank you! — :)Thank you! — :)ECG Interpretationhttps://www.blogger.com/profile/02309020028961384995noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-54667736422788872902021-04-15T00:08:58.267-04:002021-04-15T00:08:58.267-04:00Dr Ken, I fully appreciate the invaluable purpose...Dr Ken, I fully appreciate the invaluable purpose and theme<br />"12 Leads are better than one" in April 14th 2021 blog.This<br />blog, indeed, has portrayed this theme very dramatically.<br />May I give my comments:<br />In rhythm strip A, if we surmise the notches preceding the<br />early QRS # 3,6,9 & 12 as PACs, then their PR interval can<br />not be so short unless we also surmise WPW intermittently.<br />Also the compensatory pause is expected to be typically incomplete - here it is quite complete. <br />Now, coming to rhythm strip B- it is wide complex (120ms)<br />tachycardia @ 166/mt.There is a negative bump on every 4th<br />T wave. I think it is likely to be due to retrograde 4:1<br />VA conduction ( AV dissociation ) thus confirming VT.<br />With regards, Dr.R.Balasubramanian. PONDICHERRY-INDIA.dr. R.Balaubramanianhttps://www.blogger.com/profile/10882266041266448279noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-11610397334384108932021-04-14T07:23:07.318-04:002021-04-14T07:23:07.318-04:00Great
Great<br />Dr. Eman Aziz, egypthttps://www.blogger.com/profile/15030234888426593320noreply@blogger.com