refers to the normal heart beat originating from the sinoatrial node. This is manifested as an upright P wave in lead II of the ECG. Sinus bradycardia occurs when the heart rate is less than 60 ...

ECG Challenge: C diff Infection With Irregular Pulse While being treated for a C diff infection, a patient with COPD is found to have an irregular pulse. What does his ECG show?

there are a variety of atypical ECG patterns, often called 'normal variants', that can occur in perfectly normal individuals. SCD is most often due to an extremely rapid and uncoordinated cardiac ...