In a new interview with Eddie Trunk, Kramer was asked what symptoms he experienced that made him consider medical attention during their summer Let Rock Rule tour with Slash.

"I thought that I had what they call acid reflux, and I kept getting this burning sensation in my chest, and that's what I thought it was," he explains. "So I kept taking antacids. And, finally, my GP [general practitioner] said to me, 'Just to make sure and rule out that it's anything cardiac related, go and take a stress test.'"

"So I went and took the stress test," Kramer continued. "I got through the echogram [echocardiogram] with flying colors. He said that my cardiovascular system looked like that of a 48- or a 50-year-old, and I'm 64. And then I got on the treadmill, and when I got on the treadmill, it started to bother me a little bit. And so he said he wanted me to go do what they call 'imaging,' and that's what showed the blockage. And then I had an angioplasty done, and they put two stents in my heart. And now I feel better than ever."

"And so, thanks to modern science, I'm back," he adds. "My 'recupe' time was, like, five days, and I took seven, and I was back on stage. And now it's better than ever. I feel great and the playing is great. And that's the story."