A 3-year-old Eudora girl, who was awaiting a heart transplant at St. Louis Children’s Hospital, died Thursday night.

Isabelle Ellis had been experiencing blood pressure issues during the last couple of days and her need for a transplant became more urgent, according to a Caring Bridge Web journal kept by her father, Chris Ellis.

On Thursday morning, Isabelle went into cardiac arrest and, although doctors were able to stabilize her condition, she died later that evening. Isabelle had a series of complex congenital heart defects called hypoplastic left heart syndrome and had been awaiting a transplant since Oct. 28.