Brazilian Oscar diagnosed with fainting problem, remains stable

Former Chelsea midfielder Oscar remains in hospital in stable condition after being diagnosed with a fainting issue called vasovagal syncope, his club Sao Paulo said on Thursday.

Vasovagal syncope is a common form of fainting caused by a sudden drop in heart rate and blood pressure. Sao Paulo said Oscar will undergo further tests.

The Brazilian suffered cardiac complications during pre-season tests on Tuesday and was attended to by club staff and a medical team from Einstein Hospital Israelita who were at the site.

"Oscar remains clinically well and stable, hospitalised in a cardiology unit, and will undergo an electrophysiological study this Friday," Sao Paulo said in a statement.

Oscar, 34, won the Premier League twice with Chelsea and the Chinese Super League three times at Shanghai Port.

He returned to Sao Paulo in December last year, signing a three-year contract with his boyhood club.

(Reporting Karan Prashant Saxena in Bengaluru; Editing by Ken Ferris)