Ron Kirk said his father, Leslie, was admitted to hospital in October 2007 having suffered a stroke, but his treatment at the hands of some nurses amounted to cruelty.
His father had been fitted with the wrong catheter, leaving him in pain, but nurses took away his bedside alarm because they thought he was "pressing it too often", Mr Kirk said.
Claire Rayner: 'Real accountability is necessary'
Claire Rayner said: "I am sickened by what has happened to some part of my profession of which I was so proud. These bad, cruel nurses may be - probably are - a tiny proportion of the nursing workforce, but even if they are only one or two per cent of the whole they should be identified and struck off the Register."
Government chief nursing officer Chris Beasley said: "All patients deserve the highest quality of care from the NHS and the poor care received in these cases is simply unacceptable."
But she said this was not representative of the picture across the NHS.
"The NHS treats millions of people every day and the vast majority of patients experience good quality, safe and effective care."
Dr Peter Carter, chief executive of the Royal College of Nursing, said it would not condone nurses who behave in ways "that are contrary to the principles and ethics of the profession".
But he added he was concerned that highlighting a small number of cases "might undermine the public's confidence in the world-class care they can expect to receive from the NHS".
And he added: "Furthermore it could also dampen the morale of the millions of staff who work tirelessly to help their patients."
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