The incident occurred around 1:35 a.m. in the 2400 block of Red Bud Lane.
Emergency responder sources say the woman was "struck in the head and face- then fell down a flight of stairs" and "was unconscious" when responders arrived.
The responder also noted the medical issues- including the possibly the patient was "paralyzed" in the disturbance.
The woman was flown by Lifestar medical helicopter to K.U. Med Center in Kansas City KS..
Police have the suspect- reported by the LAWRENCE JOURNAL-WORLD as the injured woman's "domestic partner-" in custody.