Urethra obstruction in male dog

Re: Urethra obstruction in male dog

Alasdair Hotston Moore — Wed, 17 Aug 2011 17:37:21 GMT

Couple of belated comments:

allopurinol predisposes to xanthine stones. have you got the crystal analysis back yet?

it only takes one stone to cause urethral obstruction: cannot rule out this possibility on bladder ultrasound

passage of a catheter does not rule out a urolith: iot can easily be pushed back into the bladder when the catheter is passed

not all stones can be seen on a plain film! Many are radiolucent or not very radiodense. Inc xanthine....

This is why I recommend that all blocked dogs (and all but the simplest blocked cats) should have plain films, a retrograde urethrogram and a double contrast cystogram. Read more in the relevant chapter in the BSAVA Manual of Abdominal Imaging (guess the author.......)

Re: Urethra obstruction in male dog

ilanit — Sat, 06 Aug 2011 18:20:25 GMT

Thanks for your comments.

We removed catheter yesterday and today he urinated!! We send some of the small grit in the urine off for analysis

Re: Urethra obstruction in male dog

Judith Joyce — Fri, 05 Aug 2011 06:13:03 GMT

[quote user="ilanit"]Any thoughts?[/quote]

You need a diagnosis - especially before resorting to "exotic" drugs.

We have seen several dogs (including our own Border Collie) with similar histories and signs that were attributable to a chronic cystis (previously "asymptomatic") that caused a florrid tumour like inflammatory thickening of the bladder wall enough that the attached pedunculated lumps of this inflammatory proliferation were intermittently occluding the bladder. Pneumocystography or competent US revealed the lesions and histology + long term response to treatment confirmed the diagnosis. At least two of these cases were referred and came with a suspicion of reflex dys-synergia or other neurogenic UT disease and an interesting history of speculative pharmacologic intervention.

Re: Urethra obstruction in male dog

Louise6732 — Thu, 04 Aug 2011 22:58:53 GMT

Have you got him on some analgesia? I guess if it hurts to pee he might be holding on?

Louise

Re: Urethra obstruction in male dog

Martin Atkinson — Thu, 04 Aug 2011 17:04:59 GMT

Not had this scenario with a dog but common in cats. I think an indwelling catheter for a couple of days to allow the bladder to recover it's tone sounds reasonable. Wouldn't try bethanocol without a relaxant even if it was available, but in the abscence of easy access to phenoxybenzamine how about diazepam as urethral muscle relaxant?