Rabbit from monday back in today. Temp 36.5C, not eating since yesterday. Was in

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Rabbit from monday back in today. Temp 36.5C, not eating since yesterday. Was initially better with better feces after monday, but didn’t have more cc since yesterday and then quickly deteriorated was on afipran TID, fibreplex, cc, pepcid SID, metacam BID. Put on heated fluids (ringer 10ml/kg/h), heated pad and warmed room. Afipran, metacam and vetergesic inj.  Cc every hour.
See rtg. No improvement on medication. Does it need opening?
Can I try lidocain CRI first. I have 2mg/kg bolus slowly iv, then 100ug/kg/min iv CRI

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Afipran is metoclopramide?
I’d usually start with something that is antispasmodic the first 1-6 hours of a RGIS episode, fluids and painkillers. Butyscopolamine bromide, (as in buscopan 20 mg/ml injectable) given only once or twice SC, and I give 0,1 ml for rabbits under 3 kg, and 0,2 between 3-4 kg.
This will relax the spasms and allow the gas to move backwards. Famotidine, of course, especially if the rabbit is given NSAIDs. I also tend to use metamizol instead of opiates, to avoid decreasing the natural motility. Warm up the bunny, vibration plate if you have one, peace and quiet. Then, after 3-6 hours I redo the rads and see how the gas and ingesta has moved. Continue tx with analgesia (combo nsaids, metamizol) maybe add maropitant both for analgesia and against nausea.
If I see gas moving back, stomach filled with ingesta and less expansion, temperature go up, these are good signs. Usually at this point the bunnies I treat start nibbling at hay and show less pain signs. I am also very careful to push too much critical care whenever I see these really distended stomachs, just tiny amounts, until things get moving.
Only when I see progress and poop balls starting to form in the distal colon, (usually the buns have already pooped something) I give gastric motility enhances as strong as metoclopramide or cisapride.
The cases that show gas in several compartments (semi obstructions by dry ingesta/hair/etc) are the most difficult, but knock on wood, I’ve had very good results with this treatment the last year and a half.
It takes usually between 1-3 days to work well. If you have the adequate venue with quiet and cozy hospital, good nurses, it is almost infallible for a wide range of RGIS-stages.
I repeat rads and bloods if necessary, to see progress or regress and rethink the therapy. As said, I “save” the motility enhancers until there is free passage, no pain and temperature normalization. If you need the dosages, please say so. Good luck!