He said he understands why people might be reluctant to visit A&E in order to “take the pressure” off the NHS, but stressed it’s important to go.
Mr Roberts continued: “In this instance, really minutes made all the difference because what was happening, basically, there’s a sac around your heart and it is filling with a fluid.
“This sac is basically squeezing the heart that it sits around and the heart isn’t able to expand and therefore it isn’t able to pump.
“So that means all your other organs start failing. By the time they’ve got to me, my kidneys were at 30 percent, my liver was at 30 percent.