McGill Case 3: Difference between revisions

McGill Case 3 (view source)

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 {{McGillcase|
-|previouspage= McGill Case 1
+|previouspage= McGill_Case_2
-|previousname= McGill Case 1
+|previousname= McGill Case 2
-|nextpage= McGill Case 3
+|nextpage= McGill_Case_4
-|nextname= McGill Case 3
+|nextname= McGill Case 4
 }}
-[[File:E000576.jpg|thumb|600px|left|A 62 year old man with a severe intra-ventricular conduction defect simulating ventricular bigemini.]]
+[[File:E000703.jpg|thumb|600px|left|Intraventicular Conduction Defect
+comment:
+The ECG is in sinus rhythm and the QRS is markedly widened with a QRS duration of 260ms. The QRS seems split and gives the impression of ventricular bigemini but note that the second QRS deflection that looks like a PVC is in fact 200 ms after the onset of the first part of the QRS and hence too early for a PVC. Of interest this patient has recurrent ventricular tachycardia which may relate to his grossly widened QRS.
+The progression of the block can be seen over a three year period.
+comment from the web:
+When presented as a puzzler the correct interpretation of this ECG was not received, only suggestions of ventricular bigemini where given.
+]]