Posts Tagged ‘kidney failure’

A Primer on Leptospirosis

July 24, 2011

Of all the vaccination questions I receive, the most common one is from folks questioning whether or not to vaccinate their dogs for Leptospirosis.  And I am so pleased they are asking- I love when people recognize that simply handing their dog over for “the works” in response to a vaccination reminder card (or these days, perhaps an email reminder) simply doesn’t make sense.

Unlike canine distemper and parvovirus- infectious bad guys that are ubiquitous in the environment and against which all dogs should receive vaccine protection- not all dogs come into contact with Leptospirosis.  Exposure is truly dependent on where you and your dog live and his or her extracurricular activities- in medical jargon this is referred to as “biolifestyle”.  Leptospirosis organisms are bacteria that thrive in warmer, wetter climates.  Wild animals (particularly deer and rodents) and some domesticated animals (cows, sheep, pigs) can be Leptospirosis carriers. Although infected, they manage to maintain good health while shedding Leptospirosis organisms in their urine.  Dogs can develop the disease by coming into contact with the infected urine or urine contaminated soil, water, food, or bedding.  So, if your dog’s biolifestyle includes roaming on rural property or drinking from creeks, streams, lakes, or rivers the potential for exposure to Leptospirosis is far greater than if your pup is a couch potato and your yard is devoid of trespassing wildlife.

Not all dogs become sick when exposed to Leptospirosis, but for those that do, the results can be devastating.  Symptoms associated with kidney failure (lethargy, vomiting, diarrhea, loss of appetite) are most common.  The liver and lungs are also targets for this disease.  Your veterinarian will suspect Leptospirosis based on the history your provide, abnormal kidney and/or liver enzymes on blood testing, and specific blood and/or urine testing for Leptospirosis.

Successful treatment ideally consists of aggressive round the clock intravenous fluids and antibiotics. If the kidneys become so inflamed that urine production diminishes, temporary dialysis may be recommended.  Infected dogs should be housed in an isolation ward to protect other hospitalized patients and personnel are advised to wear protective garb (gloves, gown, goggles) as Leptospirosis is considered a zoonotic disease (humans can become infected via contact with infected urine). Yes, such therapy is expensive- far more costly than the price of a vaccination- and in spite of everyone’s best efforts, some dogs do succumb to Leptospirosis.

The Leptospirosis vaccine provides adequate protection for one year and, in theory, the risk of adverse reactions is no different than reported with other vaccinations.  However, some vets feel strongly that the Lepto vaccine is more likely to produce transient “post-vaccine blues” than are other vaccinations.

Is the Leptospirosis vaccination appropriate for your dog?  Talk to your vet to find out whether or not the disease has been reported in your neck of the woods.  Next consider your doggie’s biolifestyle.  Does your pup live in a pristinely kept environment or does he go camping and hiking with you? If your pup lives in an environment with no standing water or exposure to wildlife, the risks of vaccinating clearly outweigh the benefits.  If you and your best buddy love to hike and camp together, vaccinating may be a no-brainer.  As I routinely advise whenever discussing vaccines: Administration of vaccinations is no different than any other medical procedure- they should not be administered without individualized discussion and consideration of the potential risks and benefits.

Have you considered vaccinating your dog for Leptospirosis?  If so, whereabouts do you live and how did you (will you) decide whether to say “yea or nay” to the vaccine?

Best wishes for good health,

Nancy Kay, DVM
Diplomate, American College of Veterinary Internal Medicine
Author of  Speaking for Spot: Be the Advocate Your Dog Needs to Live a Happy, Healthy, Longer Life
Recipient, Leo K. Bustad Companion Animal Veterinarian of the Year Award
Recipient, American Animal Hospital Association Animal Welfare and Humane Ethics Award
Recipient, Dog Writers Association of America Award for Best Blog
Recipient, Eukanuba Canine Health Award
Recipient, AKC Club Publication Excellence Award
Become a Fan of Speaking for Spot on Facebook

Please visit http://www.speakingforspot.com to read excerpts from Speaking for Spot. There you will also find “Advocacy Aids”- helpful health forms you can download and use for your own dog, and a collection of published articles on advocating for your pet’s health. Speaking for Spot is available at Amazon.com, local bookstores, and your favorite online book seller.

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Urinary Accidents

July 3, 2011

When your wonderful dog, who has always done his or her “business” outside, begins leaving puddles in the house, please do not default to the notion that this is a behavioral issue.  It is highly unlikely your dog is mad at you for sleeping in on Sunday mornings or jealous because you showed some affection to your neighbor’s dog.  Chances are, the inappropriate urination is a result of an underlying medical issue.

Well house-trained dogs would rather urinate anywhere other than inside their own home.  Several types of medical issues are capable of disrupting normal house-training.  Bladder infections, stones, and tumors create an urgency to urinate even when the bladder contains only a small amount of urine.  Prostate gland disease (more common in boys who have not been neutered) can disrupt normal urinary habits.  Increased water intake may overwhelm a dog’s normal eight to ten-hour bladder capacity.  Common causes of increased thirst include a variety of hormonal imbalances, kidney failure, and liver disease.  Commonly prescribed medications such as prednisone (a form of cortisone) and furosemide (a diuretic or “water pill”) typically cause increased thirst.

Some dogs develop urinary incontinence (involuntary urine leakage).  This is more common in females and is usually a result of relaxation of the muscular sphincter that normally prevents urine from flowing down the urethra- the tube that carries urine from the bladder to the outside world.  The urine leakage may be constant, but more commonly it occurs as the bladder distends during the night while the dog is soundly sleeping. In most cases, urinary incontinence can be successfully managed by correcting the underlying cause and/or treating with medications that “tighten up” the urethral sphincter.

If your dog has a break in house-training, please don’t respond with a reprimand.  Far better to schedule a consultation with your veterinarian.

Has your well house-trained dog ever urinated in the house?  Were you and your vet able to determine the cause?

Best wishes for good health,

Nancy Kay, DVM
Diplomate, American College of Veterinary Internal Medicine
Author of  Speaking for Spot: Be the Advocate Your Dog Needs to Live a Happy, Healthy, Longer Life
Recipient, Leo K. Bustad Companion Animal Veterinarian of the Year Award
Recipient, American Animal Hospital Association Animal Welfare and Humane Ethics Award
Recipient, Dog Writers Association of America Award for Best Blog
Recipient, Eukanuba Canine Health Award
Recipient, AKC Club Publication Excellence Award
Become a Fan of Speaking for Spot on Facebook

Please visit http://www.speakingforspot.com to read excerpts from Speaking for Spot. There you will also find “Advocacy Aids”- helpful health forms you can download and use for your own dog, and a collection of published articles on advocating for your pet’s health. Speaking for Spot is available at Amazon.com, local bookstores, and your favorite online book seller.

The Grapes of Wrath

November 15, 2009

What a gorgeous time of year it is where I live, in the heart of northern California’s wine country. The leaves of the grapevines are luminescent shades of orange, yellow, and magenta. The vintners are smiling because the weather has provided them with a bumper crop.  Their grapes have been harvested and the “crush” is on.

As much as I enjoy this season, the grapes always create some anxiety for me.  What most people don’t realize is that grapes (and raisins) can be terribly toxic for dogs.  Fortunately, not all dogs become sick after eating grapes or raisins, but nothing clearly predicts which ones are susceptible.  For those who are, ingestion of even a small amount (as little as 0.35 ounces of grapes per pound of the dog’s body weight and 0.05 ounces of raisins per pound of the dog’s body weight) has the potential to cause kidney failure that may be irreversible. The toxic component within grapes and raisins hasn’t been identified, but it is thought to be contained within the flesh of the grape (not within the seeds). 

In susceptible dogs, symptoms of kidney failure develop within 24 hours following ingestion of the grapes or raisins.  They include: lethargy, loss of appetite, vomiting, and diarrhea. Partially digested grapes or raisins might be seen in the bowel movement or vomited material. What should you do if you discover that your dog has eaten grapes or raisins?  Seek out veterinary care as soon as possible- the earlier treatment is started, the better the prognosis.  If it has been less than a few hours, your veterinarian will induce vomiting to try to remove the toxin before it is absorbed into your dog’s bloodstream. If several hours have lapsed, hospitalization for treatment to prevent kidney failure will be recommended.  Once kidney failure develops, the prognosis is guarded. One study documented only a 53 percent survival rate even with aggressive treatment.  

So, here is the lesson of the season- dogs and grapes (or raisins) are a potentially lethal combination. Cats are thought to be susceptible to this toxicity as well.  Fortunately, cats who fancy fruit are few and far between! Please share this information with all of your dog-loving friends and relatives and ask them to do the same.  You just might save a life in the process! 

Wishing you and your four-legged family members good health,

Dr. Nancy Kay
Specialist, American College of Veterinary Internal Medicine 

Please visit http://www.speakingforspot.com to read excerpts from Speaking for Spot. There you will also find “Advocacy Aids”- helpful health forms you can download and use for your own dog, and a collection of published articles on advocating for your pet’s health. Speaking for Spot is available at Amazon.com, local bookstores, or your favorite online book seller. 

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Listen to Dr. Kay’s interview – A Veterinarian Advises “How to Speak for Spot” on NPR’s Fresh Air with Terry Gross