tag:blogger.com,1999:blog-549949223388475481.post8590121816172388351..comments2024-03-28T14:02:08.119-05:00Comments on Dr. Smith's ECG Blog: Syncope and BradycardiaUnknownnoreply@blogger.comBlogger5125tag:blogger.com,1999:blog-549949223388475481.post-48792888464753649022017-11-21T00:02:33.227-06:002017-11-21T00:02:33.227-06:00very cool case steve.
she had several potential ca...very cool case steve.<br />she had several potential causes for her syncope, and it would have been easy (and harmful) to stop at one of the others in the differential.<br />thank you<br />tomtom fieronoreply@blogger.comtag:blogger.com,1999:blog-549949223388475481.post-8390173513305992882014-07-29T08:17:50.433-05:002014-07-29T08:17:50.433-05:00I glanced at the ECG and knew immediately that the...I glanced at the ECG and knew immediately that the QT was long. And, yes, you're right: if the R-R is 1200 ms, then half that is 600 ms, and the QTc is 540 ms. The slower the rate, the less accurate is the quick method of looking at half the distance.<br /><br />Steve SmithSteve Smithhttps://www.blogger.com/profile/08027289511840815536noreply@blogger.comtag:blogger.com,1999:blog-549949223388475481.post-52494423398191055412014-07-28T10:46:25.616-05:002014-07-28T10:46:25.616-05:00am left wondering why the computer gets it wrong, ...am left wondering why the computer gets it wrong, and whether it's something fixable in the automated interpretation algorithm. our eyes are trained to look for qt more than half of RR interval. on my quick glance, didn't appear to be. even with precise measurement, the QT (630 ms) is just barely more than half the RR (1200 ms) interval. perhaps this 'rule of thumb' fails at rates <60?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-549949223388475481.post-31600726221668483892014-07-27T09:15:54.300-05:002014-07-27T09:15:54.300-05:00Yes, it is difficult to tell if these are P-waves ...Yes, it is difficult to tell if these are P-waves or U-waves. They march out exactly as P-waves, even on subsequent ECGs. It is not certain. If they are not P-waves, then they are U-waves. There are a variety of opinions on this, I have received many contradictory comments!! The K was 3.4 mEq/L. Steve Smithhttps://www.blogger.com/profile/08027289511840815536noreply@blogger.comtag:blogger.com,1999:blog-549949223388475481.post-34108695636905369272014-07-27T08:55:41.205-05:002014-07-27T08:55:41.205-05:00Dear doctor.,there are u waves in lead1 and rythm ...Dear doctor.,there are u waves in lead1 and rythm strip shows flattening of t waves but as you describeed mobitz2which is not present as there are not any p waves which are not conducted.so It is a case of hypokelimia Anonymoushttps://www.blogger.com/profile/16218268439781983452noreply@blogger.com