Bouwmeester, 36, was conscious and alert in the hospital after suffering a cardiac episode, the team said. St. Louis’ radio announcer Chris Kerber said during an interview with the team’s flagship station that a defibrillator was used.
The 17-year NHL veteran’s teammates immediately called for medical attention after he slumped over on the bench in the first period while apparently attempting to grab a drink of water.
Bouwmeester was playing in his 1,241st game this season and has been known for his strong skating and conditioning. With the Blues, he won his first Stanley Cup last year and an Olympic gold medal playing for Canada in 2014.
The Blues said the game against the Anaheim Ducks will be made up at a later date.
The team will stay in Orange County until they know more about Bouwmeester's condition instead of going on to Nevada as planned.
The Associated Press contributed to this report.