Background: A previously fit and healthy 30-year-old man reported experiencing palpitations accompanied by nausea, sweating and presyncope. These symptoms were found to be associated with episodes of ...

Dear Dr. Roach: I am a 68-year-old female in good health. Ten years ago, I was diagnosed with “nonsustained ventricular tachycardia.” I was put on a 25-mg dose of metoprolol twice a day. Until now, ...

Background A young adult female presented with syncope and periodic weakness. A 12-lead electrocardiogram showed frequent premature ventricular contractions and prolonged QU interval. Repetitive runs ...

Q: I was feeling lightheaded and having palpitations, went to the ER and was admitted to the ICU. They said I had a run of ventricular tachycardia. What is this? A: The heartbeat is controlled by ...

Q: I was feeling lightheaded and having palpitations, went to the ER and was admitted me to the ICU. They said I had a run of ventricular tachycardia. What is this? A: The heartbeat is controlled by ...