During her time in hospital she was mistakenly given medication meant for a patient in the bed next door - including an insulin injection.
HEALTH Secretary Jeremy Hunt will launch a crackdown on NHS medication blunders that kill 22,000 patients a year.
There are more than 230 million errors in administering medication in the NHS each year, new figures show.
But they say drug gaffes could also contribute to between 1,700 and 22,303 deaths each year. The system will be extended later to other conditions.
Jeremy Hunt intends to stop the "appalling levels of harm and death" that result from doctors prescribing the wrong dose, pharmacists handing out the wrong medicine and nurses mixing up patients.
At the summit he is expected to propose a new central database of prescribing data.
This will join up medications given in GP practices with reasons for hospital admissions and allow doctors to determine if a patient ended up in hospital because of drugs they were - or should have been - given.
The Government will also speed up the roll-out of electronic prescribing systems between GPs and pharmacists, which could cut errors "by up to 50 per cent" in a bid to end illegible or incomplete paper prescriptions.
And he will create new defences for pharmacists who make a genuine mistake so they do not try to hide their errors.
She welcomed Hunt's initiative but warned mistakes can occur because of "intense resource and workforce pressures, meaning that workloads and working hours are often unsafe for Global Positioning System and our teams".
But Mr Hunt will say we need to move "from a blame culture to a learning culture". "Ministers have to be much clearer about what extra funding and capacity they'll be providing so that NHS staff can to do their jobs to the best of their ability, without mistakes, and to really ensure our NHS is as safe for patients as it can possibly be".
The findings come from a review ordered by the Health and Social Care Secretary, which is published today. Mistakes happen more often with older patients and those who have a number of illnesses and who use many medications.
The cost to the NHS was estimated at £98.5m for the 712 confirmed deaths from drug errors in hospital, the report says.
Professor of Health Economics at the University of York, Mark Sculpher, said: "Although these error rates may look high, there is no evidence suggesting they differ markedly from those in other high-income countries. Most of the errors we've picked up in this 237 million are not going to affect the patient - are not going to even reach the patient".