Thanks to all regarding LBBB life expectancy. The NIH article was and was not helpful because it says people with my condition, male or female, have not been studied. I have heart failure due to complete LBBB (His-Purkinji) location. No heart disease or other morbidity concerns. EF 35%. I recognize that a CRT may be in my future should my EF go below 29% and insurance will then cover it. Cardio Rehab workouts raise my PVCs to frequent occasions with mild exercise and include clustered quadrilles and triplets depending on the day. These clustered PVCs are to be avoided.