Dr. Hassel is an Associate Professor of Equine Emergency Surgery & Critical Care and helped establish the 24/7 Equine Critical Care service at CSU in 2004. She has been a specialist in the area of equine colic since completion of her surgical residency in 1997 and has furthered her background in critical care medicine for the horse by obtaining board certification by the American College of Veterinary Emergency & Critical Care in 2007. Her research interests are focused on treatment of the critically ill equine patient, with particular interests in colic, the equine gastrointestinal microbiome and endotoxemia.