A Minnesota teen who went in for a routine wisdom teeth removal Tuesday unexpectedly went into cardiac arrest and has been placed on a ventilator after suffering multiple seizures.

“What started out as a normal day soon turned anything but normal,” Diane Galleger, 17-year-old Sydney’s mother, wrote on a CaringBridge page. “Sydney went in this morning for a simple, common wisdom teeth extraction. All went good until the very end when her blood pressure shot up and her pulse dropped and then she went into cardiac arrest,” Galleger wrote.

Sydney was taken to the University of Minnesota Amplatz Children’s Hospital where she undernt surgery to relieve swelling in her brain, and doctors placed her on a ventilator to assist with her breathing, MyFoxTwinCities.com reported.

As of Monday, Diane posted on the page that despite a poor prognosis, Sydney continued to fight and hang on.

“We are so devastated that this happened to our precious daughter and are still trying to process and make sense of it all. She is in very critical condition and of course we are praying for a miracle but we also have to face the reality that the prognosis is not good,” she wrote.

Sydney, who was an active diver and alpine skier, has also been getting support from her high school’s athletic teams. The Eden Prairie baseball, hockey and lacrosse teams have been wearing her initals on their uniforms vowing to “Play for Syd,” MyFoxTwinCities.com reported. The girl’s lacrosse team won the State Championship and dedicated the title to Sydney.

“To all her friends, family and people that she didn’t even know Sydney who came to pray for her, words cannot express our gratitude,” Diane posted. “We believe a miracle happened today as a result of all the prayers because she started breaking even more on her own, and cough and we swear she wiggled a toe.”