Cricket New South Wales chief executive Andrew Jones has insisted that Australia batsman Phil Hughes is receiving the "best available care" in hospital after he suffered a blow to the head.

The 25-year-old is in critical condition in intensive care at St Vincent's hospital in Sydney after a delivery from Sean Abbott hit him in the head during West End Redbacks' Sheffield Shield match.

Hughes collapsed at the crease during the clash against the New South Wales Blues and received mouth-to-mouth resuscitation before being transferred to hospital to undergo surgery.

Jones told reporters: "He received immediate treatment at the ground led by CNSW and CA chief medical officer Dr John Orchard. He was then taken to hospital by ambulance and is receiving the best available care.

"For privacy and accuracy reasons we are not in a position to discuss the medical details and we would be grateful if you would respect the privacy of the Hughes family and all the players at this time. Players and staff from both South Australia and New South Wales are obviously very concerned for Phil's health and, like Phil, are receiving appropriate support.

"Phil grew up in NSW and is a former Blue and is held in the highest regard by his current and former team-mates. The thoughts and prayers of all at Cricket NSW and indeed everyone in Australian cricket are with Phil the very best for a speedy and full recovery."

Hughes's prognosis is not expected to be made for another 24 hours.