<-- Available Jan. 10, 2003!  Check it Out!

Best Viewed with Internet Explorer!

Behavior Problems?  Find Out What to Do to Get Help!
 


 

 

Heartworm Disease

This is the heart of a dog that has died from heartworm disease.  Those white, spaghetti-like things clogging the heart are adult heartworms.  This dog died a slow, painful death.  He couldn't run and play; he

had severe difficulty breathing; and he was emaciated because he couldn't eat.  Heartworm is spread by mosquitoes, and is entirely preventable.  1 pill per month could have saved this dog's life.  Have your dog tested, and put him on preventative.  Treatment for dogs that test positive is expensive, and very painful.  The dog must be kept sedentary (inactive) for 2 months, during this treatment.  Infestation with heartworm can cause organ shut-down -- the kidneys, liver, and other main organs aren't able to get the oxygen they need, because the heartworms live in the heart and lungs.

If your dog has been diagnosed as "heartworm positive", he/she will need to undergo treatment, depending on how severe the infestation is.  Here's how it works:

A mosquito that has bitten another heartworm positive dog (and is, therefore, carrying the larvae) bites your dog, and heartworm larvae (microfilia) are transmitted into his bloodstream.  From this point, if the dog isn't on heartworm preventative (which kills the microfilia), the microfilia migrate to the heart and mature into adult worms, some as long as 14 inches. 

Upon testing, it may be found that your dog is "low positive", which means that he either hasn't had the parasites for long enough for them to mature, or that there are very few adults in-residence in the heart.  In this event, it may be safe to simply administer the monthly preventative, rather than putting the dog through the traditional treatment.  There are several reasons for this:

1)  It's MUCH cheaper.
2)  It's MUCH easier on the dog (the shots are PAINFUL!)
3)  Treating with preventative allows the adult worms to die off *slowly*, and be absorbed into the dog's system.  This is **safer** for the dog, because there is less chance of coronary or pulmonary occlusion.  However, this is to be done ONLY with the co-operation of the veterinarian, due to inherent risks.

If using preventative to cure the infestation, the dog MUST be maintained on preventative for a period of 18 months before being re-tested, so that all adults will have enough time to die off.  The dog should go for a period of 8 weeks without preventative, before being re-tested.

If, however, there are many adult worms present in the heart,  the dog may be in imminent danger of organ shut-down... at this point, it's recommended that the dog undergo the treatment shots.  This usually consists of 3+ injections over an 8-week period, depending on the amount of suspected infestation.  The adult worms die off SUDDENLY, and so the dog MUST be kept VERY quiet, and even sedated for this.  There is great risk of coronary and pulmonary occlusion, if the dog is allowed to jump around, bark, or even walk briskly.

Have your dog tested and put on preventative.  Do it today.

Brenda Rushman, Web Author