A Florida woman is alive and well after surviving without a pulse for 45 minutes, The Associated Press reports.

Ruby Graupera-Cassimiro was at Boca Raton Regional Hospital on September 23 for a cesarean section when the 40 year old suffered an amniotic fluid embolism. According to the Mayo Clinic, an amniotic fluid embolism occurs when amniotic fluid or fetal material enters the maternal bloodstream.

According to a separate report from The AP, medical workers spent several hours trying to save Ruby. Just as they thought all hope had been lost, a heartbeat appeared on her monitor.

“She essentially spontaneously resuscitated when we were about to call the time of death,” hospital spokesperson Thomas Chakurda told The AP.

The Sun Sentinel reports that Ruby suffered no long-term complications due to the incident and was taken off a life-support machine the day after her ordeal.

“There’s very few things in medicine that I’ve seen, working in the trauma center myself and doing all the things that I do, that really were either unexplainable or miraculous,” Dr. Anthony Dardano, president of Boca Raton Regional Hospital’s medical staff, told the newspaper. “And when I heard this story, that was the first thing that came to my mind.”