Toni Braxton [ tickets ]'s recent medical problems again have caused The Flamingo hotel-casino in Las Vegas to cancel her "Revealed" show, which now is set to resume May 6, according to published reports.

Braxton was hospitalized April 7 for chest pains and originally was expected to return to the stage April 15. However, the 40-year-old performer will undergo more testing throughout the next couple of weeks, according to Las Vegas news outlets.