EL SEGUNDO, Calif -- Los Angeles Chargers coach Jim Harbaugh said Tuesday that he had a successful cardiac ablation and offseason hip replacement surgery.

"The doctors can't find anything wrong with me," Harbaugh said. "A-grade."

In a game against the Denver Broncos in Week 6 of last season, Harbaugh, 61, had a flare-up with atrial flutter, a type of arrhythmia that causes the heart to beat at an abnormally high rate. Harbaugh went to the locker room, where paramedics treated him and his heart eventually returned to a normal rhythm.

Harbaugh returned in the first quarter and coached the remainder of that game, then wore a heart monitor for two weeks during the season.

Harbaugh has had three instances with atrial flutter, the last coming in 2012. Harbaugh was coaching the San Franc

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