The widow of a man who died suddenly on his brother's stag weekend is calling for refreshed procedures in A&E departments so that no one else has to suffer like she has.
James Cannon, 36, a police officer and father of two from St Neots, Cambridgeshire, first became unwell while at a Madness concert in Birmingham.
He complained of a migraine and returned to his hotel room where he phone Lilan at 9.55pm to tell her he was going to try to get some sleep and would be home in the morning.
But the next time Lilan, 34, saw her husband was when doctors were trying to resuscitate him after he'd been taken to hospital with chest pains.

She says that being treated 'in time' is critical to survival in a case like her husband's.
Mrs Cannon says her husband was "a brilliant dad, husband and great police officer, who doted on their sons, Freddie, six, and Stanley, three.
James had been away for the night on 15 December 2018, celebrating his brother Matthew's stag do.

But Mrs Cannon told the BBC that the evening "wasn't your typical alcohol-fuelled stag do as his brother doesn't drink."
The group had gone out for a meal before the concert, which is when James started to feel ill.
He later passed away as a result of a dissecting aortic aneurysm.
Mrs Cannon is now calling for anyone who comes to Accident and Emergency with symptoms like her husband's to be given a CT scan as standard "so they can be operated on as soon as possible."
She added: "I just don't want anyone else to suffer like I am. I just want to do what I can."
Catherine Fowler, vice-chair of Aortic Dissection Awareness, said: "This is a treatable condition which, when detected and treated appropriately, has a survival rate of 70%.
"No innovation required - just education to 'think aorta' and rapid access to a CT scan, then transfer for treatment."