Sticking with the same general theme from my last ECG Challenge for the months of September and October, 2013. This is more of a back-to-basics for some readers but will still challenge others. No information for this patient other than it was an adult. How would you interpret this?
I performed this ECG earlier this year in an outpatient clinic.
Patient's clinical data: 85-year-old white man; asymptomatic.
Questions? (1.) What rhythm is this tracing showing? (2.) What clue/sign is used to differentiate between the two anomalous beats (i.e., 4th and 6th beats). HINT: It's named after a part of a certain animal's anatomy.