Carbon Monoxide Poisoning in Dogs
Carbon monoxide is an odorless, colorless, nonirritating gas, that when absorbed into the bloodstream, forms a compound that causes hypoxia (reduced oxygen supply) of the heart and brain. Some pets are predisposed to toxicity due to preexisting heart or lung disease. Dogs are more susceptible.
The most common causes for exposure include:
- Automobile exhaust in a closed garage
- Faulty exhaust system
- Non-vented furnace, gas water heater, or gas/kerosene space heater
- Smoke inhalation (for example, in burning buildings)
- Airplane cargo areas (may accumulate carbon monoxide)
What to Watch For
- Weakness and/or incoordination
- Bright red color to the skin and gums
- Dyspnea (difficulty breathing)
- Abrupt death
- Occasionally, chronic (low-grade, long-term) exposure may cause exercise intolerance, changes in gait (walking), and disturbances of normal reflexes.
Diagnosis of Carbon Monoxide Poisoning in Dogs
Diagnosis is based on possible exposure to carbon monoxide, physical exam findings and supporting laboratory results:
- Routine baseline blood tests, to include a complete blood count, biochemical profile and urinalysis are generally within normal limits, with the exception of an elevated creatine kinase (muscle enzyme).
- Blood gas analysis usually reveals acidosis (low pH), related to poor oxygenation of tissues.
- Carboxyhemoglobin (hemoglobin with carbon monoxide attached) concentration in the blood is high. Blood samples can be transported to and evaluated in human hospitals. This test is not available for all veterinary clinics.
Treatment of Carbon Monoxide Poisoning in Dogs
- Oxygen supplementation is essential. Ideally, delivering 100 percent oxygen is best, although any amount of oxygen will be of benefit.
- Respiratory support with a mechanical ventilator may be indicated in those severely effected.
- Supportive fluid therapy, electrolyte, and nutritional therapy may be indicated.
- The patient’s cardiac (heart) and neurologic status should be monitored with electrocardiograms and serial neurologic examinations.
- Following the patient’s clinical signs and ideally, decreasing carboxyhemoglobin concentrations, are helpful in monitoring response to therapy.
Home Care and Prevention
Be aware that if the source of poisoning still exists, both you and your dog are at risk. Affected pets should limit physical activity for several weeks.
Prevent toxicity by minimizing exposure and using carbon monoxide detectors around your home.
Is Pet Insurance Right for you?
The best pet insurance offers coverage that’s broad enough for whatever care your pet needs and with enough options to get the perfect coverage for you and your pet.
As one of the first pet insurance providers in the U.S., PetPartners has been offering affordable, comprehensive pet health insurance to dogs and cats in all 50 states since 2002. Trusted as the exclusive pet insurance provider for the American Kennel Club and the Cat Fanciers’ Association, PetPartners highly customizable options allow pet owners to create a plan that fits their individual needs and budget — so you’re not paying for added coverage you don’t necessarily need or want. Visit www.PetPartners.com today to see if pet insurance is right for you and your family.”)
Are you pet crazy? Sign up for our email newsletter and get the latest health and wellness info, useful tips, product recalls, fun stuff, and so much more!