This is a "Routine" resting 12-lead ECG I performed on a patient several months ago in the Outpatient ECG Lab.
PATIENT CLINICAL DATA:
72-year-old white man; asymptomatic; resting comfortably in recumbent position.
This is an exercise in "anomalous" beats.
(1.) Specifically, what are 3rd, 4th, and 10th beats?