Reg: 07-13-2005
Posts: 31571
Loc: North-Central coast of California
Offline
With an actual case? Not personally -- only helping to raise funds to treat positive Katrina dogs.
Mary Strauss has written a very good overview of the three common protocols, and it's pretty clear that the level of infestation, the activity level of the dog, and other factors must be weighed when the choice is made.
Personally, from reading up on HW, I would probably also not choose slow-kill (Heartguard) to treat a positive working dog in otherwise good health and a moderate-to-heavy infestation; I'm with David Frost.
Again, it seems to be an individual decision, case-by-case, I think.
QUOTE: Although this method is gentler than the use of Immiticide, the danger from the dying worms is still present, and for a much longer period. A recent Italian study showed that pet dogs (as opposed to the caged laboratory dogs this method had been tested on before) did get pulmonary emboli and some of the dogs died of it. The more active the dog, the higher the risk. ... In addition, damage is being done to the arteries leading to the heart, and possibly to other areas of the body due to inflammation and immune response as long as the adult worms are present in the body. Most vets recommend using the fast kill method to treat heartworms, unless the dog’s health will not permit it or the owners cannot afford it. In those cases, or in the case of a very mild infection, the slow kill method may be used instead. END
Also,
QUOTE: Although heartworm treatment can be dangerous, so are the heartworms themselves. Adult heartworms are large, growing up to 12 inches in length and living as long as five years. They can plug up the pulmonary arteries, and when the infestation becomes severe, they will start to back up into the heart and eventually fill it. They can cause blood clots, and force the heart to work abnormally hard to pump blood through the clogged arteries. In addition, heartworms cause an extreme inflammatory response in the arteries that can affect other parts of the body, especially the kidneys and liver. ... Treatment for heartworm infection is one area where conventional veterinary medicine offers valuable options. Whether you elect to do the fast-kill method using Immiticide, or the slow-kill method using monthly Heartgard, either is preferable to leaving the dog untreated, or using unproven, alternative methods that may have no effect or even be harmful. ... This is also a situation where steroids and antibiotics can be lifesavers, when used judiciously during treatment. ... The decision of how to treat a heartworm-infected dog is not an easy one, and is best made after consulting with your veterinarian regarding the safest method to use for your dog. END
Mary Strauss is not a rah-rah-chemicals person, and when she writes, I read (as with Christie Keith and Lew Olson).
There is a person on another board I'm on that currently has a dog being treated for HW using a combination of doxycyline and ivermectin. She has a Border Collie that was adopted from a shelter HW+. The dog is several weeks into the treatment and is responding very well.
If you'd like I can try and get an email address for you.
Connie, thanks for this. It's good stuff.
Mara, if you would please get that info to me I would love it. I want to find out as much as I can before making a decision
When a flower doesn't bloom, you fix the environment in which it grows, not the flower.
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