Michelle McCool details The Undertaker's recent heart issues. McCool and Undertaker were on hand for WrestleMania 41 festivities in Las Vegas, as Michelle McCool was inducted into the WWE Hall Of Fame. In addition to that, Undertaker was featured at WWE World. As it turns out, there were some worries behind the scenes, as Undertaker was in the midst of dealing with a heart issue. Undertaker and Michelle McCool broke down the situation on the latest episode of Six Feet Under. Michelle McCool: “It’s because of the heart issues you’ve been having weeks prior. Which, by the grace of god, we found out just by — It ended up being terrifying. The day we got home from WrestleMania, the next day at 6 am, we were at the hospital for a little bit of heart surgery.” Undertaker: “Just a little bit.” Michelle McCool: “It was your heart.” Undertaker: “There was that little sidebar going on.” Michell McCool: “A sidebar for five weeks. It was terrifying.” Undertaker: “I wasn’t supposed to go to Vegas.” Michelle McCool: “You weren’t supposed to go anywhere. You didn’t want me to tell anybody. Not fair to me, not fair. We were in the hospital for four nights two weeks before WrestleMania. Yeah, you weren’t supposed to go. I’m not mad at it because I’d probably be the same [way], but it was terrifying, I couldn’t focus on anything else. All I wanted to focus on was you, your heart, and getting you in with the best cardiologist, which we eventually did but that took a lot of phone calls. Several nights in the hospital. By the grace of god you are here, but out of the words of the doctor himself, it could’ve turned out badly had we not found it that day.” Undertaker: “You did. You made me go have a test done.” Michelle McCool: “I did. That I had scheduled in January, that’s crazy about it. You went to the doctor March 28th, I’ll never forget. Then you called me and you were like, 'They won’t run the heart exam.' Just a routine heart scan that we were gonna do.” Undertaker: “I didn’t even know that anything was wrong.” Michelle McCool: “Got you into another [appointment] about an hour later. They had one appointment open. Come to find you, you had been in chronic a-fib for who knows how long. But the scary part was that you didn’t feel any symptoms, so we didn’t know. Yeah, you came in a few times out of breath and I’d bust your balls like, 'Dude, you were just throwing the ball with the dog, why are you so out of breath?' Or going up the stairs to pray with the kids, 'Why are you out of breath', not thinking it was an actual heart issue. So, yeah. Medicines didn’t work and we ended up in the ER on a Friday. Of course you wouldn’t stay the night. At the end of Kai’s flag football all day Saturday, you looked at me and said, 'I’m still in a-fib.' because you were doing it with the watch. I was like, 'If you’re not out of a-fib when we’re getting ready to go to church tomorrow morning, we’re going to the hospital.' Thankfully you agreed. Michelle McCool: “We went to the hospital, numbers were out of wack. Heartbeat was out of wack. Your ejection fracture of how the blood was pumping or whatever was 30%, it wasn’t much. Supposed to be 100%, obviously. We ended up staying in the hospital for four nights where they actually had to cardiovert you and shock you back to a normal rhythm. That sadly lasted, what, 24 hours. Maybe 48. After four days we go home, two days later you’re back in a-fib. Man I was stressed.” The couple went on to note that heart issues have been resolved at this point. McCool and Undertaker will be featured on season two of WWE LFG, which will premiere on June 22. Learn more by clicking here. If you use any of the quotes above, please credit and link to the original source with a h/t and link back to Fightful for the transcription.