Boozman, 63, was in the area for a speaking engagement when he was taken to the hospital early Tuesday morning by his wife Cathy, after suffering pain in his chest and shoulder.
Doctors diagnosed the senator with an acute aortic dissection and performed emergency surgery.
“We appreciate the prayers, kind words and well-wishes that have come from Arkansans and people all across the country," the family said in a statement. "Our number one priority is making sure John makes a full recovery. We are grateful for the excellent care the doctors, nurses and medical staff are providing. They are amazed at how well he has responded and we are anxious for him to begin the next phase of recovery. We know that if John had it his way he would be right back on the road in Arkansas, so the difficult part will be making sure he gets the rest he needs to get better.”
Mercy Hospital says they cannot give out Boozman's room information and aren't allowing visitors.