Aguero has a cardiac arrhythmia and remains in observation

Sergio Aguero will be out for a couple of days as he will go under an exhaustive cardiological study after some breathing problems that made him leave the pitch during the Barça v Alaves game. 

According to 'Sport', the player has been diagnosed with cardiac arrhythmia and will be out for a long time. 

Sergio 'Kun' Aguero will stay under medical observation at the hospital until a complete study of his heart condition has been carried out. What happened during the game against Alaves was strange enough for Barcelona to worry about, however the Argentinian player is feeling good. 

Reports suggest that Barcelona will not make an official announcement until all the tests have been carried out on Aguero and the diagnosis is as precise as possible.

'El Pais' claims that this wasn't the first time Aguero suffered a cardiac arrhythmia, as he had a similar episode ten days ago. The fact that this already happened before makes the doctors mad as it was irresponsible to not get tested then.