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Dogs + Medical Conditions

  • Aortic stenosis (or a narrowing involving the aortic valve) is a less common heart disease that has a higher incidence in some breeds. Dogs may not show clinical signs if they are mildly affected to more severely affected patients showing signs of heart dysfunction. Diagnostic imaging is needed to determine the severity and prognosis for each individual patient. Medications are the mainstay treatment but for some patients surgical procedures may be considered.

  • An aortic thromboembolism (ATE) results when a blood clot is dislodged and travels through the aorta, becoming lodged in a distant location. This clot causes severely reduced blood flow to the tissues receiving blood from that section of the aorta, leading to decreased oxygen in the tissues. Aortic thromboembolism is a rare occurrence in dogs and can be associated with endocarditis, cancer, sepsis, hyperadrenocorticism, and increased protein loss through diseased kidneys. This article outlines clinical signs, treatment, monitoring, and prognosis for dogs with this condition.

  • Osteoarthritis is a common condition affecting bones and joints in many older dogs. It is a disease of management and cannot be cured. Medications, physical therapy, nutrition, and surgery may all be considered to help alleviate the pain. Dogs can live a normal life with a tailored care plan.

  • This handout discusses aspergillosis in dogs, an infection, growth, or allergic response caused by the Aspergillus fungus. If your dog becomes infected, it can be confined to the nasal passages (nasal aspergillosis), or it can spread throughout the body (systemic aspergillosis). The clinical signs, diagnosis, treatment, and prognosis of both conditions are outlined.

  • Ataxia means incoordination within the nervous system. There are several forms of ataxia, depending upon where in the nervous system the abnormality occurs. The most common sign of ataxia is an abnormal, unsteady gait. Treatment of ataxia will be influenced by the root cause. Pain management, supportive care (such as anti-nausea medications), and creating a safe environment (e.g., preventing access to stairs) are cornerstones of ataxia treatment.

  • This handout summarizes atlantoaxial (AA) luxation, a condition in which instability or excessive movement is present between the first two vertebrae within the neck. Atlantoaxial luxation can be caused by trauma, hereditary factors, or a combination of these two factors. The most common sign of AA luxation is neck pain, though severely affected dogs may lose their ability to breathe due to paralysis of the diaphragm.

  • Atrial fibrillation describes very rapid contractions or twitching of the heart muscle, specifically in the atria. Most of the time, atrial fibrillation in dogs occurs secondary to heart disease. In some large breed dogs, atrial fibrillation occurs as a primary heart problem. Most dogs who develop atrial fibrillation have underlying heart disease, so the signs that are observed are related to that disease and may include exercise intolerance, cough, or difficulty breathing. Treatment varies depending on whether the dog has primary or secondary atrial fibrillation. Your dog will need to be monitored on a regular basis.

  • Atrioventricular (AV) valve dysplasia is a developmental malformation of the mitral or tricuspid valve in the heart. Signs include exercise intolerance, accumulation of fluid in the abdomen, weight loss, and stunted growth. Difficulty breathing or collapse may occur if congestive heart failure develops. Treatment of AV valve dysplasia is focused on managing signs of congestive heart failure and/or disturbances in heart rhythm, generally using medications.

  • AIHA or IMHA is a life-threatening condition that may occur as a primary condition or secondary to another disease. Most dogs with AIHA have severe anemia and their gums will be very pale. They will be anorexic, listless, easily tired, and will have increased heart and respiration rates. Diagnosis involves a complete blood count (CBC), biochemical profiles, urinalysis, and X-rays or ultrasound of the abdomen and chest. Treatment may involve blood transfusions and other medications over a prolonged time. The prognosis may be better if an underlying cause can be identified.

  • The body has an immune system that protects from foreign invaders that can cause disease and infection, however, if with an autoimmune disease, the immune system attacks itself by mistake, causing illness.