atrial fibrillation

2021 Japanese Horse of the Year Efforia (Jpn) (Epiphaneia {Jpn}--Katie's Heart {Jpn}, by Heart's Cry {Jpn}) has been retired from racing and will take up stallion duty at Shadai Stallion Station, owner U Carrot Farm announced on their website. The 5-year-old was pulled up in Sunday's G2 Kyoto Kinen with atrial fibrillation, and, although a Monday morning electrocardiogram showed no abnormalities, the decision was made to retire the 2021 Japanese Champion 3-Year-Old Colt. Bred by Northern Farm, the colt won his two juvenile starts for trainer Yuichi Shikato in 2020,...