The comedian Gallagher is hospitalized in stable condition after suffering a heart attack at a Dallas-area bar before going on stage for a show.
Gallagher's promotional manager, Christine Scherrer, says the 65-year-old is sedated and "slowly recovering" after collapsing Wednesday night.
Marc Cummins, the manager of Coach Joe's Hat Tricks in Lewisville, says the comedian collapsed in his office about 20 minutes before a show that was due to start at 9 p.m.
Cummins says the club's promotions director performed CPR on Gallagher before paramedics arrived.
Last March, the comedian best known for smashing watermelons with a sledgehammer suffered a minor heart attack after collapsing during a performance in Minnesota. His full name is Leo Anthony Gallagher.