A British holidaymaker suffered a terrifying heart attack at the top of a slide at a Florida water park in front of his horrified girlfriend.
David Piercy, 46, was at Universal's Volcano Bay in Orlando when he passed out.
Kelly McCabe, who saw it happen, told Grimsby Live it was "the most frightening thing I have ever witnessed".
The 39-year-old said: "He was initially treated for heat exhaustion but once he re-joined me at the sun beds his symptoms became worse and I began to think he was having a stroke.
"The emergency services were called and we were rushed to hospital.
"Within 10 minutes of arriving at the hospital, I was told they had rushed Dave into theatre as he had suffered a major heart attack.
"We were all in such shock as there were no warning signs, we never thought this would happen to us."
The doctors' quick response saved David's life. He was fitted with a pacemaker and stents to clear his right artery, which was completely blocked.
However, when Kelly was allowed to see him several hours later, his health took an even worse turn.
"He suffered a cardiac arrest in front of my eyes, the most frightening thing I have ever witnessed," she said.
"I remember the moment as the doctors fought to bring him back to life, saying to myself: 'It's not meant to be like this, we have so much life to still live together'."
The majority of those who suffer a cardiac arrest - in which the heart stops beating properly - don't survive it but luckily, David again pulled through.
He was able to return home to Scunthorpe and take a job that was more suitable for his health. He suffered a second heart attack in December but has again recovered well after surgery.
Since the health scare last year, Kelly has committed to raising money for the British Heart Foundation.
"The reality is that a very small percentage of people actually survive a cardiac arrest, so although we continue to face daily struggles and fears, we know how lucky we are," she said.
"This will always be part of our life now and is the reason why I wanted to give something back."
