A health update has been provided on the former Chelsea midfielder, Oscar, after he collapsed and was admitted to the ICU earlier this week.

The Brazilian star fell unconscious during a training session and has remained under observation.

Oscar, 34, was conducting an interval test on an exercise bike at Sao Paulo’s training ground when he fell ill.

Brazilian outlet Global Esporte (via Mirror) reported that he was unconscious for two minutes. The issue comes after Oscar suffered a fractured vertebra in August.

Since then, Oscar has made the bench twice, but it has been claimed that he has been monitoring a heart issue after he showed signs of an abnormality during tests on his fracture.

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In a statement on Tuesday, Sao Paulo said Oscar ‘presented an incident with cardiological changes’ and was ‘promptly attended to by the club’s professionals and the medical team from Einstein Hospital Israelita.

They have now offered another update and have confirmed a diagnosis of vasovagal syncope.

“Midfielder Oscar remains hospitalised at Einstein Hospital Israelita, where he was admitted on Tuesday afternoon (11) after presenting an incident with cardiological changes during tests carried out at SuperCT.

“An extensive investigation carried out at the hospital confirmed the diagnosis of vasovagal syncope. Oscar remains clinically well and stable, hospitalised in a cardiology unit and will undergo an electrophysiological study this Friday.”