On Friday, St. Louis GM Doug Armstrong revealed Bouwmeester had an Implantable Cardioverter Defibrillator (ICD) placed in his chest after the incident in order to prevent a similar issue from happening again.
"The procedure, which restores the heart's normal rhythm, was performed by the cardiology team of the UCI Cardiology Department," Armstrong said.
Bouwmeester is reportedly doing well ... but the surgery ain't exactly a minor one.
According to heart.org, an ICD procedure involves docs placing a battery-powered device underneath the skin in the hopes that it will help monitor irregularities in the heart and avoid sudden cardiac episodes down the line.
It's unclear what the procedure will mean for Bouwmeester's future as a hockey player ... but it certainly could signal the end of the 36-year-old's 17-year career.
The Blues say Jay will be flown back to St. Louis to recover as soon as UC Irvine doctors release him.