tag:blogger.com,1999:blog-1199060416202745408.post1325680695293106520..comments2024-03-19T13:40:12.355+08:00Comments on ECG of the Week: ECG of the Week - 3rd December 2012 - InterpretationAnonymoushttp://www.blogger.com/profile/09026589956407176781noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-1199060416202745408.post-20538716532990042262012-12-08T01:44:28.645+08:002012-12-08T01:44:28.645+08:00That's Ok, it seems a number of the coolest EC...That's Ok, it seems a number of the coolest ECG's are in isolation leaving us to consider instead the many differentials.Christopherhttps://www.blogger.com/profile/11415988855392944633noreply@blogger.comtag:blogger.com,1999:blog-1199060416202745408.post-7269122004403759742012-12-06T21:31:47.208+08:002012-12-06T21:31:47.208+08:00Hi Christopher,
I agree the notches could be SA i...Hi Christopher,<br /><br />I agree the notches could be SA in origin and are just failing to conduct due to the PVC initiated refractory period.<br /><br />I unfortunately do not have any other ECGs, or clinical information regarding this case. <br /><br />I don't really know what happened next or what subsequent ECGs showed.<br /><br />Sorry,<br /><br />John LAnonymoushttps://www.blogger.com/profile/09026589956407176781noreply@blogger.comtag:blogger.com,1999:blog-1199060416202745408.post-41272405690393875562012-12-05T23:15:06.159+08:002012-12-05T23:15:06.159+08:00While less likely, without a longer strip of V1 I ...While less likely, without a longer strip of V1 I may not be able to rule out that the sinus rate has accelerated to compensate for the PVCs and is now at 75 bpm (~4 big blocks between P-waves in V1 (extrapolated from a continuous strip thru aVR and V4).<br /><br />This would mean the P-waves are not retrograde, but just finding the AVN or ventricular tissues refractory from the PVC.<br /><br />Perhaps a strip was captured without bigeminy which would elucidate the actual mechanism of those P-waves.Christopherhttps://www.blogger.com/profile/11415988855392944633noreply@blogger.com