So evidently the asshole called 911 and pledged allegiance to ISIS moments before he went in and shot up the club.
EDIT: To address Mili's question; ORMC is huge and was just a couple blocks away (one of my wife's former foot doctors had an office one building down from the club), plus Florida Hospital has a main hospital on the north side of Downtown roughly a mile or two away. I'm not sure if they split the victims between the two or handled them all at ORMC, but from others who have partners/friends that work at ORMC and other area hospitals it sounds like they got them all in and going through emergency operation procedures fairly quick. It sounds like the sudden need of large amounts of blood is possibly the biggest issue. Thankfully the local blood banks are being overwhelmed with donors and are having to turn people away to come back over the next few days.