I think the P in PVS is for Persistent...
The doctors who gave evaluations to Greer differed over the term, some stated it meant PERSISTENT, some stated it meant PERMANENT. Some said she was PVS , some not. Greer based his decision on whether new treatment would improve her condition. He decided it would not. Therefore she needed to die. It didn't matter if she stayed the same, there would have to be proof of a treatment that would improve her. All this is based on the acceptance she was PVS already. The law states that to be PVS she must be found to be NOT AWARE.
Anyone watch the short video on FOX NEWS. Where she is smiling and listening to her mother. Looking directly at her mother, sitting up in bed???