Sen. John Warner is doing well Wednesday after being admitted Tuesday to the hospital to correct an irregular heartbeat. His spokesman said he is to remain there overnight.

Doctors performed a non-surgical procedure on the Republican senator on Wednesday morning, a therapy that helps maintain proper heart rhythm and rate, a Warner aide told FOX News.

The ablation therapy followed Tuesday's non-surgical procedure called electrical cardioversion, which corrects atrial fibrillation and returned his heart to a normal rhythm. Both procedures were a complete success and the Virginia senator's heart rate is now normal, the aide said.

"Senator Warner called his office this morning around 11:30 a.m. to say he is doing very well. He advised his staff that he passed this morning’s procedure 'with flying colors' and that no one is to go home early, as we all have work to do," the spokesman said.

Warner, 80, went to work on Tuesday morning as usual, but visited the Capitol physician's office during the day. He wrapped up some afternoon appointments before checking into Inova Fairfax Hospital with an abnormal heartbeat, a condition that about 2.2 million Americans suffer from each year.

The chances of getting the disorder increases with age. Warner announced in August that he was not going to seek a sixth term, saying he didn't want to push his health for another six years though he feels fine now.

His staff said they expect the senator to be home over the weekend and resume working in the Senate next week.

FOX News' Trish Turner contributed to this report.