A future NHL player was knocked unconscious after a scary hit which required him to be lifted out of the arena by paramedics.

Ruslan Ishakov, a freshman forward for the University of Connecticut who was drafted by the New York Islanders in the second round of June's draft, was left flat on the ice in a game against Quinnipiac on Wednesday.

Ishakov was met in the centre of the ice by a vicious hit, terrifying the crowd in the third period of the game.

UConn said the 18-year-old was transported to hospital for precautionary reasons and that he was OK.

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"Ruslan Iskhakov was transported to the hospital from the arena during last night's game at Quinnipiac for precautionary reasons," the school said in a statement released to a UConn blog.

"All tests were normal and he was released from the hospital. He is currently back on campus in Storrs and is doing well. He will be evaluated on a game-by-game basis with no timetable set for a return."