United Kingdom, April 9 -- Jean Smart ignored her doctor's advice by finishing filming on Hacks before going to hospital for heart surgery.

The Hollywood veteran, 74, has revealed she started feeling unwell while working on the third season of her hit TV show - revealing she was battling chest pressure and fatigue but put it down to being out of shape - and she didn't listen to her cardiologist who told her to go straight to the emergency room.

She told Variety: "I was feeling a little tired. But I didn't think anything of it. I had gotten used to feeling a little pressure, like if I'd go up a couple of flights of stairs. But it would always just go away.

"And I would always think: 'Jean, you're in such c***** shape.' It didn't ever oc...