Heartworms and Congestive Heart Failure in Dogs

One significant cause of congestive heart failure in dogs comes from the infestation of heartworms. The damage of this disease is irreversible, so it is critical to take steps to prevent heartworms and to work closely with the veterinarian if any symptoms occur.

  1. Heartworms

    • The heartworm is a parasite transmitted by mosquitoes. Once bitten by an infected mosquito, the larvae will travel throughout the bloodstream and settle in the heart. As the parasite grows it fills the heart cavity, blocking the arteries and causing severe damage.

    Prevention of Heartworm

    • A monthly heartworm preventative should be given to dogs. Most preventatives come in pill form, are easy to administer and should be given all year long. Prior to beginning preventatives, a blood test is necessary to ensure the dog is not already affected.

    Treatment of Heartworm

    • Successful treatment options are available if the disease has not advanced too far, which would be determined by the veterinarian. Treatment includes a series of injections of powerful drugs called Immiticide and Caparsolate, meant to eradicate the parasite. Close observation and limited activity is critical.

    Symptoms of Congestive Heart Failure

    • Advanced heartworm disease will lead to congestive heart failure if untreated. Symptoms of congestive heart failure include coughing, sleepiness, fainting, shortness of breath and lack of appetite.

    Prognosis

    • Congestive heart failure is the retention of fluids and the inability to provide necessary pressure to adequately pump the body's blood volume. Any dog exhibiting symptoms should be seen by a veterinarian immediately.