Submitted by Dr T on January 13, 2011 – 7:29pm
Multifocal premature ventricular contractions occur when more than one site in the ventricles is the source of the electrical impulse: each peak on the ECG will have a different shape.
In the face of an otherwise normal heart, my concern would be whether you are at risk for long QT syndrome (LQTS) or Torsade de points.
This is a potential dangerous arrhythmia and I have written about this before:
In your case, how much of an evaluation have you had? If this is based on one EKG by your Family Doctor, I recommend consultation with a cardiologist, careful evaluation of your EKG, blood tests for low potassium, magnesium and calcium levels and exercise testing.
Hope this helps, come back if you have more questions,