tag:blogger.com,1999:blog-3364570834099131201.post1160665806398286304..comments2024-03-19T01:40:00.596-04:00Comments on ECG Interpretation: ECG Interpretation Review #27 (ST-T Wave Changes - QT-U Wave - Hypokalemia-Ischemia)ECG Interpretationhttp://www.blogger.com/profile/02309020028961384995noreply@blogger.comBlogger12125tag:blogger.com,1999:blog-3364570834099131201.post-49040016156279346732022-03-16T23:54:25.258-04:002022-03-16T23:54:25.258-04:00The ECG features of digoxin effect are seen with t...The ECG features of digoxin effect are seen with therapeutic doses of digoxin and are due to: Shortening of the atrial and ventricular refractory periods — producing a short QT interval with secondary repolarisation abnormalities affecting the ST segments, T waves and U waves — :)ECG Interpretationhttps://www.blogger.com/profile/02309020028961384995noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-9774199203457616662022-02-28T17:53:05.530-05:002022-02-28T17:53:05.530-05:00How does digoxin cause ST depression? thank you si...How does digoxin cause ST depression? thank you sirblondegirlhttps://www.blogger.com/profile/11906334762253818411noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-68418952445176870112021-05-30T13:29:31.982-04:002021-05-30T13:29:31.982-04:00GOOD question! — And I fully admit that sometimes ...GOOD question! — And I fully admit that sometimes it is difficult for me to decide IF there is or is not a tiny R wave. For example — in lead aVR of Figure-1, I’m sure we BOTH agree that there is a definite wide Q wave (of course, not a “QS” — because there is an R wave after the wide Q). But the question is whether that “tiny notch” at the very onset of the QRS in leads V1 and V2 of Figure-2 is truly an “r” wave — or artifact — or in the case of lead V1, perhaps some T wave of the P wave depression, with rise to the baseline before the QRS begins … And then note that in leads like V4,5,6 (especially V5) — there is some artifactual variation in the baseline. So I think it is difficult to know for certain if there truly is or is not an initial r wave in leads V1 and V2 of Figure-1 … THANKS again for your question! — :)ECG Interpretationhttps://www.blogger.com/profile/02309020028961384995noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-80710515732726352882021-05-30T10:05:05.773-04:002021-05-30T10:05:05.773-04:00When should one consider the QS complex as exactly...When should one consider the QS complex as exactly QS, in other words which criteria are for the QS complex, because I see in V1-V2 tiny r waves.Thanks for the answer, Sir.Anonymoushttps://www.blogger.com/profile/06440486629628793562noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-17558816496039359192015-10-07T19:46:49.738-04:002015-10-07T19:46:49.738-04:00Excellent question Mostafa — that I would answer b...Excellent question Mostafa — that I would answer by saying that precise determination of the "QTc" when you have prominent U waves may just not be possible (since the U waves may hide the point where the T wave ends ... ). That said — precise measurement should really not be needed. For example, in the case here in which the QTc is clearly lengthened (most probably due to severe electrolyte disturbance with low K+/low Mg++ in this patient with a history of alcohol abuse) — Management really will not change depending on any slight difference that there might be due to not being able to clearly see the end of the T wave ... Treatment of the underlying condition (electrolyte repletion; nutrition; hydration; etc.) takes priority — and once the patient's condition improves: i) You WILL be able to accurately measure the QTc, because U waves will decrease in amplitude (and may even resolve); and ii) The QTc will approach more normal values, so concern about a long QTc will probably cease to be an issue ...ECG Interpretationhttps://www.blogger.com/profile/02309020028961384995noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-11818005020832509352015-10-07T10:08:22.174-04:002015-10-07T10:08:22.174-04:00How do we measure the QT interval when there are p...How do we measure the QT interval when there are prominent U waves that runs into the U wave ? <br />Anonymoushttps://www.blogger.com/profile/06475696764299734880noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-64368230508993335232015-04-28T17:03:14.659-04:002015-04-28T17:03:14.659-04:00Thank you Stillcho for your comment. In this parti...Thank you Stillcho for your comment. In this particular example — P wave notching is seen in multiple leads — so assuming correction of electrolyte problems doesn't resolve this diffuse P wave abnormality — it would see more likely that an intra-atrial conduction defect (rather than left atrial enlargement) is responsible). I discuss ECG diagnosis of atrial abnormality more in Blog #75 — GO TO — http://tinyurl.com/KG-Blog-75 — Hope that answers your question!ECG Interpretationhttps://www.blogger.com/profile/02309020028961384995noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-77255489174519754702015-04-25T05:57:49.753-04:002015-04-25T05:57:49.753-04:00There is a "Mitral P" in lead II?
Thanks...There is a "Mitral P" in lead II?<br />ThanksStilichohttps://www.blogger.com/profile/13908484620668565360noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-2985982300404707342013-06-17T00:30:37.579-04:002013-06-17T00:30:37.579-04:00Hello Darwin. For those patients who "read th...Hello Darwin. For those patients who "read the textbook" when they drop their serum K+ values - the serial ECG changes shown in Figure 3 are what is expected. The ST segment becomes flat, may be depressed - and a U wave develops. To my knowledge - the PR interval does not prolong. I hope that answers your question!ECG Interpretationhttps://www.blogger.com/profile/02309020028961384995noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-36581040999238489582013-06-16T02:43:46.032-04:002013-06-16T02:43:46.032-04:00what is the correct manifestation of hypokalemia i...what is the correct manifestation of hypokalemia is it ST segment depression or prolonged PR interval?<br />Anonymoushttps://www.blogger.com/profile/07531251230505178041noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-77394513743159254142012-09-25T02:17:02.742-04:002012-09-25T02:17:02.742-04:00its good.....
Educationits good.....<br /><br /><a href="http://www.entireeducation.com/" rel="nofollow">Education</a>Anonymoushttps://www.blogger.com/profile/12930550842346734646noreply@blogger.comtag:blogger.com,1999:blog-3364570834099131201.post-62972533086917570882011-08-21T09:53:19.255-04:002011-08-21T09:53:19.255-04:00GOODGOODappuhttps://www.blogger.com/profile/17662880336764608781noreply@blogger.com