tag:blogger.com,1999:blog-549949223388475481.post3794708930497425590..comments2024-03-28T14:02:08.119-05:00Comments on Dr. Smith's ECG Blog: The LAD occlusion formula did not work here. Why?Unknownnoreply@blogger.comBlogger7125tag:blogger.com,1999:blog-549949223388475481.post-62624752816349038042020-10-31T16:49:54.807-05:002020-10-31T16:49:54.807-05:00Thank you Anderson! The reason the P in lead III i...Thank you Anderson! The reason the P in lead III is inverted (and especially why the P in lead I is taller than the P in lead II) — is that there is LA-LL Lead Reversal (that had not been detected). STAY TUNED — as I plan to illustrate this soon in a new Blog post — :)ECG Interpretationhttps://www.blogger.com/profile/02309020028961384995noreply@blogger.comtag:blogger.com,1999:blog-549949223388475481.post-51750450200321969992020-10-31T08:22:40.887-05:002020-10-31T08:22:40.887-05:00Great post. I would like to do some comentary abou...Great post. I would like to do some comentary about that. Firt, The rhythm is sinus at 86-90/minute. Second, the intervals — the PR interval is normal and the QRS complex is narrow. Peguero Criteria = Deepest S in any chest lead + S in V4 ≥28 mm in man and ≥23 mm (~ 40 in V3 + 22 in V4 = 62 mm!). There are asymmetric (slow downslope and more rapid upslope) ST-T wave depression of strain in lead I, aVL and V5-V6. There are a obvious LVH, therefore the formula ((1.062 x STE at 60 ms after the J-point in V3 in mm) + (0.052 x computerized QTc) - (0.151 x QRSV2) - (0.268 x R-wave Amplitude in V4 in mm) may not apply in this ECG. Finally, Why the P wave in lead III is inverted?<br />Anderson Santos from Brazil. O Poder da Eletrocardiografiahttps://www.blogger.com/profile/11143192155299060176noreply@blogger.comtag:blogger.com,1999:blog-549949223388475481.post-8650398589925254972013-06-18T06:18:14.064-05:002013-06-18T06:18:14.064-05:00The ST depression is due to LVH.The ST depression is due to LVH.Steve Smithhttps://www.blogger.com/profile/08027289511840815536noreply@blogger.comtag:blogger.com,1999:blog-549949223388475481.post-65829507998758208132013-06-17T11:22:37.895-05:002013-06-17T11:22:37.895-05:00In example #1, does how much depression matter? Wh...In example #1, does how much depression matter? What about mild depression in said leads? BWindleyhttps://www.blogger.com/profile/02106921090363054327noreply@blogger.comtag:blogger.com,1999:blog-549949223388475481.post-74407542975236265052012-02-10T12:28:56.406-06:002012-02-10T12:28:56.406-06:00I've seen a few LVH's called in as possibl...I've seen a few LVH's called in as possible "Code STEMI" en route to the ED. It's an important DDX to recognise - if only to save face in front of the cardiologists!<br />Cheers<br />Chris Nickson<br />http://lifeinthefastlane.comprecordialthumphttps://www.blogger.com/profile/13170923368688327663noreply@blogger.comtag:blogger.com,1999:blog-549949223388475481.post-5853258314764504162012-02-09T06:53:09.917-06:002012-02-09T06:53:09.917-06:00The ischemia keeps the ventricle from fully depola...The ischemia keeps the ventricle from fully depolarizing as it normally does. That's my theory.Steve Smithhttps://www.blogger.com/profile/08027289511840815536noreply@blogger.comtag:blogger.com,1999:blog-549949223388475481.post-90162487055557220902012-02-08T20:45:51.265-06:002012-02-08T20:45:51.265-06:00Dr Smith,
I find it interesting that the S-wave am...Dr Smith,<br />I find it interesting that the S-wave amplitude decreases in the setting of LVH and LAD occlusion, do you know or have any theories as to why this occurs?<br />ThanksAndyJhttps://www.blogger.com/profile/08742812483232241614noreply@blogger.com