The bunny: spayed female, 5 years old, 10 pounds, black/brown, found as a stray when approx 6 mos old. Eats a mix of pellets, two big salads a day, oat hay and orchard grass. Drinks only dilute apple juice. Looks healthy, sleek glossy coat that all vets have commented on. Lost her female bondmate 3 years ago (probably to e.c.) Now bonded with a 6 pound male who takes good care of her. Never been sick, though had high pasteurella titer two years ago. Xrays show some spondylosis and hip arthritis.
The problem: Trouble hopping and wasn't using litterbox. Discovered ulcerated left hock in late January. Vet said it looked like it was healing, prescribed soaks and metacam. Pink, almost completely closed skin by late May, noticed swelling, squeezed, and out came some thick white pus. Went to new vet who insisted on reopening it to clean and culture. Wound would not heal, back to first vet again, and now wound is closed again but still looks somewhat swollen and inflamed.
Tests run:
March: basic blood panel, normal
June: culture (included part of abscess wall) showed only staph aureus, susceptible to nearly everything. Xray showed no bone involvement.
August: xray, no bone involvement
late Oct: culture (needle aspiration), showed only methicillin resistant staph schleiferi (subsp schleiferi)
Treatments tried:
Feb - May: two weeks of metacam .75 ml/day, then only as needed, with epsom salt soaks and Healx Soother Plus till ulcer almost completely closed. No abx.
June (after infected and reopened): one month baytril 50 mg/day oral concurrent with chlorhexadine flushes and silver sulfadiazine cream.
July: one month SMZ/TMP 120 mg 2x/day oral, switched from chlorhexadine to Vetericyn to flush halfway through.
August: back to baytril (same dose as before).
Sept: pulsing baytril on and off weekly per vet's instructions (though mostly I kept her on since hock got inflamed when off).
past Friday: after culture, started on tetracycline 250 mg every 12 hours.
Benebac gel (1 g) given once or twice weekly since mid-July, every other day since starting tetracycline. Fluids given two days ago. Metacam last night.
Other symptoms:
Red rash on ears, worse on right ear, developed 2-3 weeks into baytril in June. Vet thought allergy, maybe to baytril, but when off baytril it would often get worse. Cleared when I upped the baytril to .75 mg/day for a week, came back with lower dose. Cleared after first dose of tetracycline, back now.
In mid-August, the other hock (right) developed a small hard bump on the bony point, almost like a red bony protuberance. Xray showed no bone infection. Vet did not know what it was. Was a small pink bare spot prior to that.
Concerns:
-liver and kidney health after 5 months on abx (adding milk thistle a good idea?)
-risk of enteritis/clostridium overgrowth on tetracycline
-calcium in GI tract inactivating tetracycline (Frances Harcourt Brown)
-decreased number of antibiotics now available after resistance developed
-anaerobic bacteria, or others not cultured
-latest culture report returned after only 2 days -- doesn't seem enough time to grow all that might be in there
-10 days of tetracycline enough?
-so far tetracycline doesn't seem to be doing anything. Hock red and inflamed.
-appetite suppression: hardly any appetite yesterday and isn't eating/drinking anything sweet. Still munching hay and some greens. I know this is common 48-72 hours after starting abx though. Gave more benebac last night. Appetite improved some this evening.
-hot/cold ears. They seem to be alternately on fire and then ice cold. She seems to be cold at times, hunched up. Loved being wrapped in warm towel from dryer. Have taken temp a few times over the last few days and seems steady at 100.5. Seems to have some difficulty regulating body temperature though (due to not eating much?).
I've read many (all?) of Randy's posts about abscesses with great interest. Especially interested to read that pasteurella rarely shows up on culture, since that is what I suspected in June. I mentioned bicillin to the vet in June. When culture came back staph, he said "good thing we didn't try the penicillin since it wouldn't have worked on the staph." I said I had heard from others that their vets prescribed bicillin in addition to baytril in the assumption that anaerobic bacteria were present (which he admitted would not be cultured), but he said hock abscesses rarely involved anaerobic bacteria and that they were mostly found in facial abscesses. Didn't want to subject my girl to anything unnecessary, so dropped the bicillin subject. Now I wonder if we should have tried it, and whether it would help now. Also wonder if the MRSS is the prime culprit, or just one of those "tagalong" bacteria Randy has posted about.
Sorry about the length -- I wanted to include as many details as possible. Any advice or comments highly appreciated. If you've made it this far, thanks for reading!
Petra
The problem: Trouble hopping and wasn't using litterbox. Discovered ulcerated left hock in late January. Vet said it looked like it was healing, prescribed soaks and metacam. Pink, almost completely closed skin by late May, noticed swelling, squeezed, and out came some thick white pus. Went to new vet who insisted on reopening it to clean and culture. Wound would not heal, back to first vet again, and now wound is closed again but still looks somewhat swollen and inflamed.
Tests run:
March: basic blood panel, normal
June: culture (included part of abscess wall) showed only staph aureus, susceptible to nearly everything. Xray showed no bone involvement.
August: xray, no bone involvement
late Oct: culture (needle aspiration), showed only methicillin resistant staph schleiferi (subsp schleiferi)
Treatments tried:
Feb - May: two weeks of metacam .75 ml/day, then only as needed, with epsom salt soaks and Healx Soother Plus till ulcer almost completely closed. No abx.
June (after infected and reopened): one month baytril 50 mg/day oral concurrent with chlorhexadine flushes and silver sulfadiazine cream.
July: one month SMZ/TMP 120 mg 2x/day oral, switched from chlorhexadine to Vetericyn to flush halfway through.
August: back to baytril (same dose as before).
Sept: pulsing baytril on and off weekly per vet's instructions (though mostly I kept her on since hock got inflamed when off).
past Friday: after culture, started on tetracycline 250 mg every 12 hours.
Benebac gel (1 g) given once or twice weekly since mid-July, every other day since starting tetracycline. Fluids given two days ago. Metacam last night.
Other symptoms:
Red rash on ears, worse on right ear, developed 2-3 weeks into baytril in June. Vet thought allergy, maybe to baytril, but when off baytril it would often get worse. Cleared when I upped the baytril to .75 mg/day for a week, came back with lower dose. Cleared after first dose of tetracycline, back now.
In mid-August, the other hock (right) developed a small hard bump on the bony point, almost like a red bony protuberance. Xray showed no bone infection. Vet did not know what it was. Was a small pink bare spot prior to that.
Concerns:
-liver and kidney health after 5 months on abx (adding milk thistle a good idea?)
-risk of enteritis/clostridium overgrowth on tetracycline
-calcium in GI tract inactivating tetracycline (Frances Harcourt Brown)
-decreased number of antibiotics now available after resistance developed
-anaerobic bacteria, or others not cultured
-latest culture report returned after only 2 days -- doesn't seem enough time to grow all that might be in there
-10 days of tetracycline enough?
-so far tetracycline doesn't seem to be doing anything. Hock red and inflamed.
-appetite suppression: hardly any appetite yesterday and isn't eating/drinking anything sweet. Still munching hay and some greens. I know this is common 48-72 hours after starting abx though. Gave more benebac last night. Appetite improved some this evening.
-hot/cold ears. They seem to be alternately on fire and then ice cold. She seems to be cold at times, hunched up. Loved being wrapped in warm towel from dryer. Have taken temp a few times over the last few days and seems steady at 100.5. Seems to have some difficulty regulating body temperature though (due to not eating much?).
I've read many (all?) of Randy's posts about abscesses with great interest. Especially interested to read that pasteurella rarely shows up on culture, since that is what I suspected in June. I mentioned bicillin to the vet in June. When culture came back staph, he said "good thing we didn't try the penicillin since it wouldn't have worked on the staph." I said I had heard from others that their vets prescribed bicillin in addition to baytril in the assumption that anaerobic bacteria were present (which he admitted would not be cultured), but he said hock abscesses rarely involved anaerobic bacteria and that they were mostly found in facial abscesses. Didn't want to subject my girl to anything unnecessary, so dropped the bicillin subject. Now I wonder if we should have tried it, and whether it would help now. Also wonder if the MRSS is the prime culprit, or just one of those "tagalong" bacteria Randy has posted about.
Sorry about the length -- I wanted to include as many details as possible. Any advice or comments highly appreciated. If you've made it this far, thanks for reading!
Petra