What to do when your dog has a bladder problem.
Urinary incontinence is an inability to control urination. Urination is a complex process that coordinates mental awareness, voluntary and involuntary nerve input, urine storage, and muscle relaxation and contractions. Urinary incontinence occurs when some part of this process fails.
Causes include hormone deficiency (the most common and easily treated form); neurogenic (nerve-function) problems, which require special management; anatomic abnormalities; bladder storage or outflow tract problems; metabolic disorders; kidney failure; bladder stones; urinary tract infections; and prostatic disease.
Risk Factors and Detection
Urinary incontinence affects dogs and cats of any age and breed, but dogs are more susceptible. Spayed or neutered pets show greater risk for developing incontinence associated with hormone deficiency, but the health benefits of spaying or neutering far outweigh this risk.
Pets with urinary tract abnormalities may be incontinent from birth. However, incontinence also accompanies age-related conditions such as senility, kidney disease, and cancer. Obesity increases the risk of incontinence in female dogs.
Trauma, especially to the spinal column and pelvis, increases the risk for neurogenic incontinence. And pets who are at risk for developing bladder stones are predisposed to storage and outflow tract problems.
Here are some signs of urinary incontinence:
If you notice these signs in your pet, call your veterinarian. Your pets doctor will ask you to describe the elimination behavior, when the problem started, what medications your pet takes, and whether your pet has a history of urinary tract disorders or trauma. This helps differentiate incontinence from voluntary but inappropriate urine elimination and urine marking. Your vet will then perform a complete physical examination, including urinalysis, blood tests, and possibly X-rays and an ultrasound.
Prevention and Treatment
Maintaining a healthy urinary tract and avoiding obesity help prevent incontinence. Provide plenty of fresh water every day, feed your pet the right amount of high-quality food, and provide adequate exercise. Also monitor your pets elimination habits so youll recognize changes in her routine. Annual examinations help your veterinarian detect and treat underlying medical conditions before they progress.
If your pet develops urinary incontinence, your veterinarian will rule out or treat any underlying problems. For pets suffering urinary incontinence associated with hormone deficiency, your doctor may prescribe hormone replacement therapy or phenylpropanolamine, a medication that increases urethral pressure and helps keep the urethral sphincter closed. Your veterinarian will likely recommend surgery to correct anatomic abnormalities, remove bladder stones, or treat some prostatic diseases.
Specific types of urinary incontinence respond to medications such as diazepam, phenoxybenzamine, or bethanacol, which either relax or stimulate muscles to allow urination. If your pet suffers acute spinal cord injury or similar nerve damage, your veterinarian will teach you how to manually empty your pets bladder or insert a catheter until the bladder can contract and empty on its own.
Most pets with hormone deficiencies respond favorably to medical therapy. Your veterinarian can use surgery to treat anatomical malformations, spinal cord trauma, and bladder stones, but theres no guarantee that your pet will urinate normally again.
Because the nervous system has little capacity for regeneration, pets with neurogenic incontinence are unlikely to regain normal function. Likewise, incontinence associated with bladder or urethral cancer indicates advanced disease. Talk with your veterinarian about your pets unique case.