It’s the dreaded “upper body injury” for Bruins defenseman Mark Stuart.

Stuart played just four shifts in the first period Tuesday night before suffering an undisclosed ailment, according to Bruins coach Claude Julien.

“He’ll be evaluated and let you know [Wednesday],” Julien said. “We’ll give you more [Wednesday] and he needs to be evaluated. We need to give you the right information.”

The Bruins defenseman totaled three minutes, 56 seconds on the ice in the first period before being forced out of the game. The Bruins practice Wednesday in Wilmington before hosting the New York Islanders on Thursday night at TD Garden. Julien did not speculate on Stuart’s availability on Thursday or Saturday, when the Bruins host the Flyers.