I was recently told by my cardiologist that I have Premature Ventricular Contractions (PVC), and not to worry unless they come frequently. I also have SVTs, are these related?? I was put on a Zio heart monitor for 3 days - will get results Monday morning. I recently bought a stethoscope (my cardiologist suggeseted I know more about my heart). My husband and I can both clearly hear what sounds like a comletely skipped beat, and what sounds like an extra beat. The skipped beat is more often and happens several times within 2 minutes of listening. It's disconcerting. Any idea what we're hearing??