Discussion. Hemoptysis (expectoration or coughing up of blood) has been reported as a consequence of severe heartworm infection in dogs,2-6 although it remains a relatively uncommon finding. Even fewer reports exist of dogs coughing up or vomiting up adult heartworms.
The adult worms die in a few days and start to decompose. As they break up, they are carried to the lungs where they lodge in the small blood vessels and are eventually reabsorbed by the body.
The cough associated with heartworm disease in dogs is often likened to the sound of a goose honking. If your dog tends to get into coughing fits after activity or eating, and if those coughs sound harsh and honk-like, then she may have heartworm disease or another heart related concern.
Dogs who are suffering from heartworm disease may begin coughing up blood as the disease progresses due to inflammation and damage within the lung field. If your dog has not been on routine heart worm prevention, it is best to inform the veterinarian at the time of the visit so a heartworm test can be completed.
Parasites. Tiny parasites like hookworms and heartworms can attach themselves to the dog's intestinal lining and ingest its nutrients. A significant amount of parasites can cause bloody puke.
Finally, frequent vomiting usually goes along with heartworms. Dogs who cough often may cause themselves to vomit as a result of their extensive coughing. Some dogs may feel nauseated from their heartworms as well, and may vomit often just because they feel so sick with the disease.
After treatment, the adult worms die and are carried by the blood to the lungs where they lodge in small blood vessels. There they decompose and are absorbed by the body over a period of several months. Reactions to the drugs are not uncommon, and there is always some risk involved in treating a dog for heartworms.
The lifespan of a dog in this condition is most likely limited to a few weeks or a few months. Your vet will guide you on the best course of action for treating your dog depending on the severity of their infection. Dogs can live for at least six to seven months after becoming infected with heartworms.
Heartworm disease can also lead to liver or kidney failure. Dogs that are exposed to a large number of infective larvae at once are at great risk of sudden death due to massive numbers of developing larvae bombarding the vascular system.
A persistent, dry cough is a common sign seen in dogs with advanced heartworm disease. The cough caused by heartworm disease can be one of the first signs you notice in an otherwise healthy-appearing dog. Lethargy and reluctance to exercise are common signs described in dogs with advanced heartworm disease.
Light, Dry Cough
When heartworms infiltrate the lungs and start reproducing in the lungs and in the surrounding vessels, your dog may start to cough. This is usually a dry, unproductive cough that can be more obvious after exercise. Sometimes dogs may have “coughing fits,” that may even cause fainting.
Congestive heart failure is when a dog has edema of the lungs due to heart disease. Among other symptoms, this results in a wet, phlegmy cough caused by the excess fluid.
Myth #3: If my pet has heartworms, I will see them in her feces. Although many worm types, such as roundworms and tiny hookworms, are shed in your pet's feces, heartworms do not live in the gastrointestinal (GI) tract, and are not found in feces.
Is heartworm detection/diagnosis immediate? No, heartworms are undetectable until they have finished maturing. Because of this, it can take 6-7 months before modern vet tests detect that your pet has been infected. However, they can live for years and reproduce inside the animal.
How soon after infection will a dog show signs of heartworm? - Haywood Animal Hospital. It can take several months to start seeing actual signs, as it takes anywhere from six to eight months for the larva to reach the adult stage. It can even take up to two years to see any signs.
No one wants to hear that their dog has heartworm, but the good news is that most infected dogs can be successfully treated.
Dogs with heartworm disease, for example, require exercise restriction before and heartworm treatment, as well as for a short time after treatment. Physical activity increases the likelihood of adult worms causing a pulmonary thromboembolism, which may be fatal. Limiting a dog's physical activity decreases this risk.
But can your dog feel heartworms? In a way, yes. Your dog can feel the discomfort that goes hand-in-hand with the heartworms hatching from larvae stages into adulthood. They can also feel them migrating from one spot to another inside their body, specifically if they're affecting your dog's lungs and breathing.
With the three-dose adulticide protocol described above, in conjunction with doxycycline and macrocyclic lactones as recommended by the American Heartworm Society, 98% of dogs will be cleared of heartworm infection.
Dogs with heartworm disease can live high-quality lives as long as they are given appropriate care. After completing treatment and following your veterinarian's recommenda- tions on heartworm disease testing and prevention, the chances of any long-term effects are very low.
Most post-treatment complications arise from these fragments of decomposing heartworms, so to minimize this risk your dog must not be allowed to exercise and should be kept as quiet as possible for the first month following treatment. For seven to eight weeks following injection, a cough will be noticeable.
Once heartworms make their way into the lungs and begin reproducing in the lungs and surrounding veins, your dog will begin exhibiting a dry cough, typically after exercising. In some cases, these coughing fits might end in fainting, even after light exercise.
Heartworm disease can interfere with heart function and cause inflammation within the lungs. With these conditions, a dog is likely to cough and gag in an attempt to clear the airway, but that won't help. Only veterinary attention can get your dog some relief.