Answer and Explanation 10

10.  The correct answer is A.  This patient is likely having premature atrial contractions or premature ventricular contractions.  She is healthy.  The diagnosis can be made by a holter monitor.  A repeat EKG in 1 week would not be helpful.  A cardiac catheterization or stress test would likely not be helpful given her symptoms are consistent with an heart arrhythmia rather than any coronary artery disease.