You have performed an ECG on a 34-year-old woman who appears to be in good general health. A portion of the ECG tracing is shown here. Which type of heart block does this patient have?
A. First-degree AV block
B. Third-degree AV block
C. Second-degree AV block, Mobitz type I
D. Second-degree AV block, Mobitz type II
Answer: A
Health Professions