There are three sets of lines – each in a different color. What do they represent? When an electrode…
My last post about RBBB drew a lot of attention so I decided to write another one. I Started to…
There are several issues here. First, those responding that the narrow QRS complex is a result of a pause occurring…
Back in the 1950’s or perhaps early 1960’s Dr. Henry Marriott – as the story goes – overheard a nurse…
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You’ve just done a 12-lead ECG on a patient with chest pain compatible with an acute coronary syndrome. It shows…
During one of my orientations as a young internal medicine house officer, the cardiologist lectured us on the essentials of…
We all know that the PR interval is prolonged in the presence of a 1st degree AV block, that the…
Some ectopic QRS complexes – especially junctional ectopic complexes – can look very much like the sinus conducted beats or…
This post is short and to the point: premature atrial complexes (PACs) do not have to resemble the sinus P…