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Dawn's picture

Previous Anterior Wall M.I.


If you are an instructor, or a fairly new student, you don’t always need to see “challenging” ECGs. But, you may not want to see “standard” ECGs from an arrhythmia generator, either.  Every ECG contains subtle and not, so subtle characteristics of the person it belongs to.  Take a minute to look at this ECG before reading the discussion, and ask yourself what you might surmise about the patient.

The Patient: We don’t know much about the actual patient this ECG came from.  What we do know is that he is an elderly man with a history of heart disease who was hospitalized sometime in the past with an acute M.I.  He is now on beta blocker medication and is on a diet, as he is approaching the “morbidly obese” classification.  He is now in the ER with shortness of breath and mild chest pain.  What does his ECG tell us?

Dawn's picture

Recent Anterior-Septal Wall M.I. With Right Bundle Branch Block

This is an ECG from a 95 year old man who was recovering from an anterior-septal wall M.I.  Other clinical data for this patient has been lost, except that he suffered a new right bundle branch block during this M.I.  The ECG shows pathological Q waves in V1, V2, and V3, consistent with permanent damage (necrosis) in the anterior septal wall.  The ST segments in those leads are coved upward.  Even though the J points are not elevated, this ST segment shape suggests recent injury.  The classic RBBB pattern is present:  wide QRS, rSR' pattern in V1, and wide little s waves in I and V6.  It is not known why the overall voltage is low in this patient.

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