Is a Dr. responsible for staph?

My mother had a pacemaker placed in Dec. 2008. It has had problems since and during the 3rd surgery a lead broke in the vein near her heart.
A few weeks later the site became red and oozing pus. She went to the heart dr. and asked for antibiotics because she thought it was infected. He said no.
A week later she was in the hospital with a rampant staph infection in her bloodstream. We asked for her to be transferred out of town and he took 2 days to do that. Little Rock doctors determined that the staph came from within at the pacemaker site.
She is in for at least 3 more surgeries to repair this. Is her original doctor liable? - Is this your question? Add additional information