The 47-year-old rocker had to be evaluated by doctors after he had a large drop in his blood pressure, reports People.
"Bret suffered no setbacks and is fine," said Dr. Mansour Assar, an interventional cardiologist who was involved with the procedure carried out on January 24. "It's always good for patients to be evaluated when they're not feeling well," he said.
Michaels, a former "Celebrity Apprentice" contestant, is recovering at home in Arizona. The blood pressure drop was attributed to dehydration and exhaustion, which are possible complications of his diabetes.
The hole in Michaels' heart was discovered last year after he suffered a stroke in the wake of his recovery from a brain hemorrhage.