What’s Up Doc column: What is ventricular tachycardia?

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 electrical signals (giving rise to those “blips” on an electrocardiogram (ECG)) that tell the heart cells when they should squeeze,… … Read More