The cause of unclosed ductus arteriosus in dogs

1. The cause is not yet clear.
2. Some people used long-haired lion dogs to test and confirmed that the disease is related to polygenic inheritance.
3. Some people believe that the occlusion mechanism of the ductus arteriosus is affected by prostaglandin synthase inhibitors, hemodynamics, partial pressure of oxygen in the blood and neuroendocrine factors. Therefore, changes in the above factors may also contribute to the occurrence of this disease. .

Symptoms of unclosed ductus arteriosus in dogs

1. The symptoms of sick dogs depend on the short-circuit blood volume of the ductus arteriosus and the level of pulmonary artery pressure.
2. Puppies after birth may not show clinical symptoms when the pulmonary artery pressure is lower than the aortic pressure and the blood volume is small. As they age, they will gradually develop left ventricular insufficiency.
3. When pulmonary artery pressure increases, puppies have poor sucking ability, delayed development, ascites and limb edema.
4. When the blood volume of the short circuit is small, adult dogs will have no obvious symptoms. When the blood volume of the short circuit is large, they will have varying degrees of dyspnea. Such as dyspnea at rest, paroxysmal dyspnea at night, and sometimes recurrent respiratory infections.

Treatment measures for dogs with unclosed ductus arteriosus

1. Perform surgical atresia before the onset of pulmonary hypertension in dogs.
2. When the dog's pulmonary artery pressure is higher than the aortic pressure and reverse blood flow occurs, the prognosis is poor (meaning the condition is critical, or there is no effective treatment method, the sick animal may die or cannot be completely cured, affecting production performance and economic value).