St. Louis coach Ken Hitchcock did not have an update on Lehtera's condition and said there would be one Wednesday.
Lehtera left the game with 8:27 remaining in the first period after playing five shifts totaling 3:25. He left the ice on his own and reportedly was taken to the hospital by ambulance in his street clothes.
He had two goals and eight assists in 18 games.
Stay Connected
NHL.TV™
NHL GameCenter LIVE™ is now NHL.TV™.
Watch out-of-market games and replays with an all new redesigned media player, mobile and connected device apps.
Introducing the new official NHL App, available for iPhone, iPad and Android smartphones and tablets. A host of new features and improved functionality are available across all platforms, including a redesigned league-wide scoreboard, expanded news coverage, searchable video highlights, individual team experiences* and more. The new NHL App on your tablet also introduces new offerings such as 60fps video, Multitasking** and Picture-in-Picture.
*Available only for smartphones
** Available only for suported iPads