யானைக்கால் நோய் Elephantiasis | Canine micro filariasis | Heartworm disease in dogs |

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Heartworm disease (dirofilarosis), produced by Dirofilaria immitis, primarily affects the pulmonary arteries, producing inflammation, vascular dysfunction, and pulmonary hypertension. Secondarily, this results in right-side cardiac pressure overload and progressive pulmonary insufficiency. Tertiary problems include aberrant worm migration, caval syndrome, coagulopathies (DIC), and heart failure. Most infected dogs are asymptomatic, but the most common clinical signs are weight loss, exercise intolerance, cough, and labored breathing.