DES MOINES, Iowa -- Iowa State says coach Fred Hoiberg has undergone open-heart surgery to replace an aortic valve.
Hoiberg had the surgery Friday at the Mayo Clinic in Rochester, Minnesota.
Dr. Rakesh Suri said the operation was a success, adding that "Hoiberg is in recovery and doing very well himself."
Hoiberg retired from the NBA after the 2004-05 season because of heart issues. He just completed his fifth season at Iowa State, leading the Cyclones to four straight NCAA tournament appearances and back-to-back Big 12 tournament titles.
He is expected to need about four to six weeks to recover.