Originally Posted By: Alan_Romania
It is normal for the T-wave to be inverted after a wide QRS complex like a PVC... it is not typical for an inverted T wave on the complex before a PVC unless it was also a wide QRS.
Basically this, though you can get different shapes to PVCs.

Additionally, many things can cause an inverted t wave, independent of a PVC. Think of a PVC as the heart 'hiccuping.' Usually no big deal. The heart can have all sorts of problems. Kind of like you can have have a cold and hiccup - ever have near simultaneous sneeze and hiccup?