The recommended anesthia for these little guys are Isoflorine or sevoflorine. I have not heard of the one you mention.
When JoJo was neutered, it was also a one day deal. The pre-op was done a few weeks prior to the surgery. The morning of they told me to bring in him between 8 and 9 am and I got the call midday he was fine and could be picked up after 4:00 pm. He was a little tired the first night and next day, but bounced back pretty quick. His stitches dissolved and he didn't need a cone although he tried licking the wound a few times but we just kept our eye on him.
I can't imagine this procedure involving 3 days!
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