Trainer Nicky Henderson has not ruled out running Sprinter Sacre again this season after the superstar's heart problem righted itself.

The brilliant seven-year-old was found to be suffering from an irregular heartbeat after he was pulled up by Barry Geraghty during his seasonal return in Friday's Desert Orchid Chase at Kempton.

Sprinter Sacre was sent to Newmarket for assessment by Celia Marr, a specialist in equine internal medicine and cardiology, on Saturday.

Marr confirmed the original diagnosis of atrial fibrillation and decided to give the horse time to see if his heartbeat regulated itself.

"The good thing is that the fact it has self-righted means we don't have to go into the process of using any drugs," Marr said.

Henderson said Marr would examine the horse again at his stable on Friday when Sprinter Sacre would canter using an ECG.

"It would be speculation (to say he won't run again this season)," Henderson said.

"We're talking about cantering him again on Friday, so you wouldn't rule out training him again this season."