Trudeau (upper body) was placed on injured reserve and is considered week-to-week, the team announced Friday.
Trudeau has no points, two shots, three hits and two blocks in three outings this season. He exited Thursday's 5-2 win over Montreal because of the injury. Jack Ahcan, who has been a healthy scratch in two of Nashville's four games, is likely to play more regularly while Trudeau is on the shelf.