When the vet was first doing the lameness exam she moved off stiff and so he did some adjustments on her back end, nothing major. She seemed better, he finished the exam, told me what he thought and I put her in her stall while I went out and got the bill. I paid, we chatted for a few minutes, and he drove off. I walked into the barn to check on Sheena and she was down, in her stall, on her side, muscles tense and kind of twitching, and covered in sweat.
I called the vet back, and the barn owner tried to help me get her up with no success. The vet came back and gave her a banimine shot and still wouldn't get her up. I had told him that she was Impressive bred (and that I had never had her tested for HYPP and that she had never had an attack in the 20 years that I had owned her), but the vet said it must be HYPP and gave her calcium. We tried to get her up again and she fell in the stall. He ended up giving her calcium 2 more time IV and we were barely able to get her the 25 (staggering) steps to the indoor where she collapsed.
Sheena was down all night--she would sit up on her chest to eat hay for a while, then lay back down flat like it had exhausted her. We thought she was getting shocky so called another vet out for fluids and a second opinion. That vet had no idea what was going on but gave her some steroids and bute IV with the fluids.
All night she was out flat, then would try to get up, kind of kick her hind legs, then fall back down on her side. The chiro vets said she was having an HYPP attack and had to come out of it.
Finally in the morning the vet came back and I insisted he do some back readjustments in case it was a pinched nerve or something, which he did with her laying down. We got her on her feet for a couple of minutes but she could barely stand, and then she lost her balance and fell.
I decided enough was enough and she was put down around 8 am this morning. I pulled some hair to be tested for HYPP, just so I could know for sure. I called the AQHA about testing and they looked her up and just told me that BOTH her parents are N/N, so she can't have HYPP.
I have owned this horse since she was 4--she was my oldest friend and the reason I survived some tough times in my teen years and I am completely devastated by losing her, but it's even worse having it be in such an awful way with no answers--does anyone have any ideas what this could have been??????