Triple H required surgery last week after suffering a cardiac event ... but, fortunately, the WWE star says he's expected to fully recover.
The wrestling org. made the announcement Wednesday ... saying the 52-year-old superstar -- real name Paul Levesque -- had the procedure at Yale New Haven Hospital.
WWE officials added, "The episode was caused by a genetic heart issue and Paul is expected to make a fully recovery."
Triple H has been wrestling for roughly three decades ... and has been an ironman in the sport -- only suffering one severe injury in his career, back in 2001 when he tore his quad.
The wrestler has recently taken a bit of a step back when it comes to action in the ring ... as he's been more involved in the business side of the WWE.
Story developing ...