Expert: Charlotte Sherrell, DVM - 7/29/2008

Question
Hi, we are considering rescuing a 2 year old, 80lb yellow lab with low-moderate heart worm disease.  Should we be concerned with any long term effects after treatment?  The rescue said they do one shot and then the second the next day and then they're done.  Is this the best treatment?  We are also going away in October and the rescue suggested doing treatment then so we will be able to get to know the dog for a few months before he needs to be kept calm and quiet.  Is it alright to prolong it 2 1/2 more months?

Answer
Heather -

Is a veterinarian treating your new pet? There are recommendations by the American Heartworm  Society that the veterinarian can use to treat your dog.   I think that is the best route because he/she can properly treat the animal in the event there are side effects from the injections.  

Each regiment for heartworm treatment is tailored to the needs of the dog.  The two injection method can be a good one is the animal is watched very thoroughly after the injections are given.  There is also a modified treatment where one injection is given, wait thirty days and administer another injection and then give the last injection twenty four hours later. There are different ways to treat heartworm disease dependent on the physical condition of the dog.  The veterinarian should decide what treatment Is to be decided upon.  

I hope the shelter informed you that your most important job (besides loving him) is the keep your dog quiet. Rest is essential  to prevent reactions resulting from stress on the heart and lungs.  It is necessary to keep you pet confined for six to eight weeks. Labs are usually very active, so you may have to take extra measures to keep him quiet.  I usually recommend reduced activity until a negative heartworm result is obtained.

It is usually not a problem to wait a few months if the pet is receive other treatment.  

Good luck with the treatment -

Best Regards,

Charlotte Sherrell, DVM