My 5ish year old Siobhan has been back & fore to the vet since she was spayed for ovarian cysts in June. She’s had recurring episodes of soft/runny poos and the odd squeaky wee with strong-smelling urine. Initial thought was abdominal inflammation post-surgery and she was treated with Metacam. This helped but once it was stopped the symptoms returned. She was then given a week of Baytril after a urine dipstick showed trace of blood and a second week of Baytril was given when the blood trace was still present on re-test. A urine sample was sent off which showed no bacteria but 3+ blood. Due to this result and the fact that symptoms were still present she then had an ultrasound which showed no stones or growths but vet admitted that it wasn’t possible to be certain of no adhesions as it was very difficult to visualise these on ultrasound. She has been continued on Metacam since the scan but whenever we try to wean this, the runny poos and squeaky wees recur. She was also started on Cystease about 10 days ago. Another urine sample was dipsticked last week and again showed blood despite the Metacam and Cystease. The sample was therefore sent off and at vets this morning the result showed 3+ blood, no bacterial growth and signs of crystals but also very oddly traces of antibiotic! Now Siobhan hasn’t been on an antibiotic since June/July and the vet did discuss with me that it is possible that some animals do self-produce but this isn’t common. Obviously the finding of crystals is good as we now know the cause of her urinary symptoms but we are baffled as to why the presence of crystals is affecting her digestion to the extent of cow-pat poos. Does anyone have any suggestions? Also can anyone shed any light on the presence of antibiotic when none should be present? For the moment she’s staying on Metacam 0.2 ml twice daily and Cystease but vet is reluctant to keep her on Metacam long-term. Any advice/suggestions welcome. Thanks x
Hi!
There is a condition called sterile interstitial cystitis which has become much more common especially in indoors guinea pigs over the last decade that is unfortunately not well know outside vet circles seeing guinea pigs on a regular basis. It is called sterile (i.e. non-bacterial) interstitial (i.e. chronic with regular flare-ups) cystitis (bladder infection) or sterile IC. This means that it doesn't react to antibiotics and is usually diagnosed only by default after all other problems in the urinary tract have been excluded. It cannot be healed, only managed until it eventually goes away on its own - but usually more in a matter of years rather than months.
Treatment is similar to that of cats who are the other species with sterile cystitis, mainly by glucosamine (the contents of 1 capsule of cystease mixed with 2 ml of water; give 1 ml every 12 hours) and metacam to deal with the inflammation. Sometimes potassium citrate is also prescribed.
You can find our diet recommendations for IC piggies in the chapter for piggies with urinary tract problems; depending on the severity of the sterile IC some piggies can have individual trigger foods, which cause increased smelly urination. But a low calcium, grain-free, high sugar/root free veg and pellet diet can help with removing the most common trigger foods and help to stabilise your piggy outside of the flare-ups, which should hopefully lengthen in interval as time goes by.
Long Term Balanced General And Special Needs Guinea Pig Diets
The good news is that while IC is definitely not pleasant, it doesn't impact on the life span and it doesn't cause any bladder stones. Once it is fully gone, it won't come back. My Nerys had three years with IC floolowed by three more years totally free of any bladder problems and died at the ripe old age of 8 years in 2016.
Please accept that it can take a goodly while (i.e. several weeks) until acute symptoms are settling down and that you will see a sudden flare up every few weeks. Glucosamine and metacam take a while to build up; you are in it for the long term.
We haven't seen it used here in the UK yet and don't have therefore any first-hand practical experience with it, but if you have one of the more extreme cases, then monthly cartrofen infection (again, a glucosamine based dog arthritis medication) have been found in recent research to be effective.
Here is more information on sterile interstitial cystitis:
Links - Interstitial Cystitis - Guinea Lynx Records