Heartworm associated respiratory disease (HARD), a common problem in cats with heartworm disease, occurs when your pet's lungs become inflamed due to the death
of immature worms.
The inflammatory response to the arrival
of immature worms in the lungs may cause asthma - like signs.2 These cats may initially present with a history of coughing, dyspnea, and vomiting.
About Heartworm Disease in Cats The incidence of heartworm disease in cats closely correlates with the infection rate in dogs, but in cats the disease is often a result
of immature worms that never become adults.
Not exact matches
Immature fleas (larvae) begin the cycle by swallowing the eggs
of the
worm and infection is passed on to a cat when it eats an infected flea during grooming.
Since none
of these treatments will kill the
immature forms
of the
worm or the migrating larvae, at least two or three treatments are needed.
Roundworm larvae (
immature worms) may be present in the mother cat's mammary glands and milk throughout the period
of nursing the kittens.
Under the right environmental conditions
of temperature and moisture, the eggs hatch and develop into larvae (
immature worms).
This is true even if the mother tests negative for roundworms because roundworm larvae (
immature worms) encyst in the mother's muscle tissue and are not detected by our tests for the eggs
of adult
worms.
Even from that one study, we really do not know how many dogs were truly free
of heartworms - since male
worm,
immature female
worms or female
worms sterilized by the doxycycline or the monthly heartworm preventatives that were given would all test negative as well.
Unfortunately, the lungs
of cats are profoundly reactive to the arrival or death
of the
immature or adult
worms, such that significant morbidity and even death can occur.
Once the
immature parasites have been treated, the adult
worms are killed with a series
of two or three treatments
of a
worm - killing poison called melarsomine dihydrochloride.
It is defined as vascular, airway and interstitial lung lesions caused by the death
of immature adult
worms, and the inflammation may last up to eight months.
Antibodies are produced by the presence
of immature adults, and they begin to wane as the
immature adult
worms die.
Severe Damage The various disorders brought about by heartworm infection are in part attributable to the impressive size
of the parasite — white, spaghetti - like creatures that can grow to be nearly a foot long — and to the inflammatory response that
immature and dying adult
worms induce.
The disease is caused by an inflammatory reaction to the presence
of heartworm or
immature adult
worms.4, 5
Immature worms arriving in the pulmonary vasculature can cause pulmonary arterial, arteriolar, and airway lesions as severe as those seen with death
of adult heartworms.
Antigen testing is not as effective at detecting infection with adult
worms < 5 months old and is unable to detect
immature worm infections, male - only infections, and some infections with only one adult female
worm.1 If the infection does not produce an adult
worm, the
worms are
immature at the time
of testing, or only male adult
worms are present, a false - negative result may be obtained.
Immature worms are transmitted to dogs during the bite
of mosquitoes.
The
immature worms migrate and mature in the dog and eventually become adult heartworms in the large blood vessels in the lungs or the right side
of the heart.
Despite its name, Heartworm Disease is primarily a lung disease in cats causing cough, chronic inflammation, and even scarring within the lungs due to the presence
of 2» long
immature larval
worms.
Getting rid
of the parasite includes elimination
of the adult
worms and killing the
immature microfilariae.
The goal is to first stabilize your dog if he is showing signs
of disease, then kill all adult and
immature worms while keeping the side effects
of treatment to a minimum.
Not only are these products naturally derived, while they may be quite toxic to
immature worms, they are virtually harmless to mammalian vertebrates, the class
of animals that includes dogs and people.
IN DOGS, the
immature larval stage
of the
worm is deposited into the dog's skin by an infected mosquito.
Both
immature larvae and adult
worms cause a great deal
of lasting damage to a cat's organs and immune system as they travel through the cat's body.
Adult heartworms reproduce and release the next generation
of immature larval
worms, called microfilaria, into the bloodstream.
At this time the emodepside product is the only one that can attack
immature worms still in the process
of migration, as well as the intestinal adults with one treatment.
The
immature fleas larvae ingest the eggs
of the
worm, but infection is then passed on to a cat when it swallows an infected flea during grooming.