The scary part of that video is the senior officer trying to talk the nurse down, and lying to her face about the law and what rights they (police) have. The hospital has every right to refuse access to a patient and their information.
http://hipaa.bsd.uchicago.edu/law_enforce.html
The Supreme Court has ruled that a blood draw requires patient consent or production of a search warrant.
http://www.nolo.com/legal-encycloped...-warrants.html
The cops didn't want to hear that, and freaked the hell out. My biggest question here is not about the behavior of the Detective, as he cooked his own goose with his own body camera, my concern is the behavior of the other offices there. They should have immediately stepped in and helped calm the Detective down, as he was 1000% in the wrong. He did nothing by the book, and he allowed his emotions to get the best of him. His LEO brothers should have diffused the situation before it got way out of control. All they have done is make themselves complicit in the action and are going to be staring an IA in the face as well.
The outcome of this is this nurse getting a big payday and at least one cop losing his job and his pension. Based on the look of that Detective, that's going to hurt the worst. I hate to see a guy make a simple mistake that costs him a lifetime of earning, but in this instance, it is definitely deserved.