Former WWE Superstar and former WCW World Heavyweight Champion, New Japan IWGP World Heavyweight Champion, and All Japan Triple Crown World Heavyweight Champion Big Van Vader posted the following on Twitter:

Yesterday I had a surgery on my heart .My heart had shifted to an A-Fib irregular heart beat A person in a fib has substanily increased chance of Heart Attack &Stroke.The surgery was to put the HEART in normal sinus https://t.co/MQvHiGe0Rg was a success

, Big Van Vader (@itsvadertime) May 9, 2018