McGill Case 3: Difference between revisions

McGill Case 3 (view source)

480 bytes added , 10 February 2012

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-[[File:E000703.jpg|thumb|600px|left|This is an ECG from a 62 year old man with a low ejection fraction and a Thallium-201 study which showed large infarctions in the territories of the RCA and the LAD arteries. Angiography showed normal coronary arteries.]]
+[[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.
+]]