Dear Dr. Roach: I am a 79-year-old man in relatively good health. I don’t take any medications. I recently visited a cardiologist regarding some heart palpitations that I have been experiencing. After ...

This ECG demonstrates an “extensive anterior” and “tombstoning” of the ST segment seen during a large acute anterior myocardial infarction. This is usually the result of thrombosis of the left ...

Dear Dr. Roach: I am a 79-year-old man in relatively good health. I don’t take any medications. I recently visited a cardiologist regarding some heart palpitations that I have been experiencing. After ...

There are Q waves in the inferior leads and in leads V1-V4 (anteroseptal leads). This indicates an infarction, possibly old. What is concerning about this ECG tracing are the ST segments. There is an ...

A 61-year-old man presented to the emergency department with epigastric pain lasting 3 hours, preceded by vomiting and watery diarrhea for 2 days. He had a 7-year history of hypertension, diabetes ...

In a recently published study in the journal Nature Medicine, researchers developed and tested an intelligent model for diagnosing patients with occlusion myocardial infarction (OMI). This model was ...

The prevalence of Wolff–Parkinson–White syndrome is about 1–3 per 1000.2 In the syndrome, some ventricular depolarization occurs via a rapidly conducting accessory pathway. This results in a short PR ...

See related research article by Siha and colleagues on page 1135 and at www.cmaj.ca/lookup/doi/10.1503/cmaj.111683 One could imagine a scenario in which attention to ...