Middle-school teacher Maureen Oleskiewicz was pronounced dead Tuesday morning, two days after she had gone into cardiac arrest after choking on a hot dog at Wrigley Field.
Oleskiewicz was attending the game with her brother when -- just a few minutes before first pitch -- she slumped over in the right-field bleachers. EMTs performed chest compressions on the scene, and she was quickly rushed to Illinois Masonic Hospital.
"There were no signs she was in distress; she just went down," Oleskiewicz's brother, Martin, told the Chicago Tribune. "They were saying she didn't have a pulse. It felt hopeless."
According to The Tribune, the Cubs released a statement, saying: "The Chicago Cubs are saddened to hear news of the untimely death of Maureen Oleskiewicz. We express our deepest sympathy to her family and friends. We will continue to keep her family in our thoughts and prayers during this difficult time."
Oleskiewicz's donated heart will go to a 14-year-old girl, The Chicago Sun-Times reported.
AJ Cassavell is a reporter for MLB.com. Follow him on Twitter @ajcassavell. This story was not subject to the approval of Major League Baseball or its clubs.