The only patient data I have is that this ECG is from a 73-year old man.  At the request of the site administrator (Dawn Altman), I'm posting this ECG because there isn't one quite like it in the Guru's archives.  Some readers will recognize it as one I recently posted on another website.  This one lives up to the title of "Challenging".  I'll make the same general statement I did on the other website:  You'll need to make careful measurements with calipers on this ECG to come to the correct interpretation.

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Most visitors to this site are busy medical professionals, instructors, or students.  Most of us endure a great deal of stress in our lives as we deal with life, death, and quality of life issues with our patients.  We take on extreme responsibility and do potentially dangerous procedures while trying to improve the health of our patients.

Patient's clinical data:  56-year old man.

At Dawn's request, this month's ECG is laying down the foundation for a topic she wanted me to eventually talk about on the ECG Guru.  On this ECG, I'm not just looking for the obvious disturbance of rhythm.  This type of ECG is literally begging for a laddergram to help reveal the mechanism responsible for a couple of very subtle and rare findings.