The rhythm is regular at a rate of 75 beats/min. A P wave occurs before each QRS complex (+) with a stable PR interval (0.20 sec). The P waves are positive in leads I, II, aVF, and V4-V6. This is a ...
A 64-year-old man with a history of a previous myocardial infarction presents to his primary care physician with complaints of chest discomfort that is pleuritic and nonexertional. The pain is ...
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What Causes Bigeminy and When Should You Worry?
Bigeminy is an irregular heart rhythm where every normal beat is followed by an abnormal one. You should see a doctor if bigeminy causes dizziness, chest pain, or trouble breathing. Bigeminy can be ...
A specialist tells how to interpret subtle changes on the ECG, including those caused by two life-threatening syndromes you might otherwise miss. Reading ECGs is like learning to appreciate art—it is ...
Correspondence to Ricardo Stein, Universidade Federal do Rio Grande do Sul, Porto Alegre 90035-903, Brazil; rstein{at}cardiol.br Objectives To evaluate the prevalence of abnormal ECG findings and ...
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