Sergio Agüero is facing a minimum of three months on the sidelines.
The Barcelona striker was forced to leave the pitch in their 1-1 draw against Alaves, so as to remain in the hospital.
Sergio came off in Saturday’s La Liga match, saying he’s having chest discomfort and dizziness.
The cardiac exam he went for detected an irregular heartbeat.
Barcelona released the a statement on Monday, the Statement read: “Barça player Kun Agüero has been subjected to a diagnostic and therapeutic process by Dr. Josep Brugada. He is unavailable for selection and, during the next three months, the effectiveness of treatment will be evaluated in order to determine his recovery process.”