McGill Case 28: Difference between revisions

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[[File:E000613.jpg|thumb|600px|left|Case three.]]
[[File:E000728.jpg|thumb|600px|left|This is an electrocardiogram from an elderly man with a history of syncope.
This electrocardiogram shows sinus rhythm at 74 per minute. The PR interval is grossly prolonged at 288 milliseconds, there's an R S R complex in V1 compatible with a right bundle branch block and a QRS axis of minus 83 degrees compatible with a left anterior hemi-block. Taking all three abnormalities together the tracing suggests a trifasicular block.
This patient also had a Holter monitor that showed second-degree heart block and as a result a pacemaker was implanted because of his history of syncope.]]