A newborn baby has been given a pioneering treatment at a British hospital after being born without a pulse.
Riley Joyce was given xenon gas at St Michael's Hospital, Bristol.
The Nursing Times says he was suffering from lack of oxygen and showing abnormal brainwaves after his birth.
His parents had been told there was a 50-50 chance of permanent injury and disability.
But they agreed that Riley could become the first baby in the world to be given xenon gas to try to improve his chances of full recovery.
The Nursing Times says Prof Marianne Thoresen and her colleague Dr James Tooley stabilised Riley at a temperature of 33.5 degrees Celsius.
The little boy's breathing machine was then connected to the xenon delivery system for three hours.
Riley was then kept cool for 72 hours, then slowly rewarmed. Five days later he was able to breathe without the machine.
Prof Thoresen told NewsWales: "After seven days, Riley was alert, able to look at his mother's face, hold up his head and begin to take milk."
Baby Riley's parents, Dave and Sarah Joyce, told NewsWales: "We are delighted that Riley is doing so well and we are extremely grateful that we were given this opportunity. Marianne was so passionate about the treatment and we truly believe that she had and still has the best interests of Riley in mind.
"It was traumatic to see our baby not breathing, but seeing the ambulance coming to collect Riley to take him to Bristol gave us hope that something could be done to help him. We would like to thank all the team at St Michael's Hospital for everything they have done for us."
The machine is now authorised for clinical trials and at least 12 more babies are expected to benefit from it over the next few months.
Source: Nursing Times