Ferrari racer Felipe Massa is in a "stable, satisfactory condition" following a high speed accident in qualifying at the Hungarian Grand Prix.
Massa's skull was fractured in two places and he suffered concussion in the 170mph crash.
The Brazilian, 28, was hit on the head by flying debris before driving into a tyre wall in the second qualifying session at the Hungaroring.
He was treated at the track then underwent emergency surgery at Budapest's AEK military hospital where he will be kept under observation overnight.
A Ferrari official described the operation as a "success".
A hospital spokesman said: "At the time he was admitted to hospital his condition was stable and his breathing and blood circulation was normal.
"During the course of his examination they established that he had suffered serious, life-threatening injuries including loss of consciousness and a fracture of the forehead on the left side and a fracture on the base of the skull.
"After the operation he is being cared for in intensive care and now he is in stable, satisfactory condition."
did anyone see what happened? was pretty nasty hope he has a speeedy recovery
Madrid, cabron, saluda al campeon
O le le, O la la, ser del Barça és el millor que hi ha (8)