But during a PVC, the opposite happens, and the contraction starts prematurely in the Purkinje network of the ventricles (2). When this happens, you may not experience any symptoms, or you might ...
An example of lead pipes that deliver water to the nation's homes is on display. (Seth Perlman/AP Photo) From Philly and the Pa. suburbs to South Jersey and Delaware, what would you like WHYY News to ...