MP reading hundreds of bad care cases.
Ann Clwyd, pictured, triggered a discussion about compassion in nursing after describing how her husband, Owen Roberts, died in Cardiff's University Hospital of Wales.
The Cynon Valley MP said Owen Roberts, who had multiple sclerosis, had been treated with arrogance and indifference by staff in the final days before his death in October.
Ms Clwyd has met with campaigning organisations to see how she could help raise standards in compassion and care.
She said that since speaking about her experience, she has received "hundreds and hundreds" of letters, e-mails and telephone calls from all over Britain.
One example read: "He had been left in a bare bed, naked in his own excrement, excrement ground into his fingernails, left without a blanket.
"My father is an RAF veteran of the Second World War. He did not serve his country or pay his taxes for 43 years of continuous employment to approach the end of his days in a filthy, poorly administered establishment."
Ms Clwyd said: "The fact remains that there are far too may cases to abject neglect in the NHS."
In its response to Ms Clwyd's original claims about her husband, Cardiff and Vale University Health Board said it "did not tolerate poor care" and offered to meet her so a formal investigation could be launched.