The 25-year-old left-hander, who was on the verge of a Test recall, was hit on the lower head by a Sean Abbot bouncer yesterday following which he underwent an emergency surgery and was placed in an induced coma in the Intensive Care Unit of the St Vincent's Hospital here.
Australia's team doctor Peter Brukner spoke to the media outside the hospital today on Hughes condition.
Cricket Australia also issued a statement updating about Hughes' condition and future course of treatment.
"Phillip Hughes remains in a critical condition in St Vincents hospital after being struck in the head while batting for South Australia against NSW at the SCG yesterday," CA said in the statement.
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"He will have scans this morning and a further update will be provided when the results of those scans are known."
Meanwhile, CA has decided to abandon the ongoing round of Sheffield Shield matches as a mark of respect for Hughes who suffered the injury on the opening day of the match between New South Wales and South Australia.
"We've spoken to players and the ACA, and given how players across the country are feeling right now, it's just not the day to be playing cricket and we understand that," CA's Executive General Manager of Team Performance Pat Howard said.
"We are continuing to offer all players and match officials counselling and support at this difficult time.