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  • Aspirin is a commonly used over the counter nonsteroidal anti-inflammatory drug (NSAID) and is used to treat fever, pain, inflammation (swelling), and clotting disorders in humans. Aspirin poisoning occurs when a cat ingests a toxic dose of aspirin, either through misuse or accidentally. Clinical signs depend on how much aspirin was eaten. Treatment for aspirin poisoning depends on how quickly the cat is seen by the veterinarian.

  • Aspirin is a commonly used over the counter nonsteroidal anti-inflammatory drug and is used to treat fever, pain, inflammation (swelling), and clotting disorders in humans. Aspirin poisoning occurs when a dog ingests a toxic dose of aspirin, either through misuse or accidentally. he most common side effect of aspirin is gastrointestinal irritation, which can lead to signs such as a decreased appetite, vomiting, diarrhea, and abdominal pain. Treatment for aspirin poisoning depends on how quickly the dog is seen by the veterinarian.

  • Ataxia is a lack of order, or incoordination, within the nervous system, resulting in an abnormal gait in which the cat may be very unsteady on her feet.

  • The word "ataxia" comes from two roots: "a" meaning "lack" and "taxia" meaning "order." So literally, ataxia is a "lack of order," or incoordination, within the nervous system.

  • Atlantoaxial (AA) luxation is a condition in which instability, or excessive movement, is present between the first two vertebrae within the neck. This spinal disorder is most commonly seen in young, small breed dogs, such as Toy Poodles, Miniature Poodles, Yorkshire Terriers, Pomeranians, and Chihuahuas. Less commonly, however, large breed dogs and even cats can be affected.

  • Atovaquone (brand name MepronĀ®) is a drug used to treat infections caused by bacteria and protozoa. It is often combined with other drugs to treat specific infections. Side effects from atovaquone have not been reported; however, any side effects that you observe should be reported to your veterinarian. Any side effects that you observe should be reported to your veterinarian.

  • Atrial fibrillation describes very rapid contractions, or 'twitching', of the heart muscle, confined to the atria, or the top chambers. Most of the time, atrial fibrillation in cats occur secondary to heart disease.

  • Atrial fibrillation describes very rapid contractions or twitching of the heart muscle, specifically in the atria. Most of the time, atrial fibrillation in the dog occurs secondary to heart disease. Sometimes, in large breed dogs, atrial fibrillation will occur as a primary heart problem.

  • There are four chambers in the cat's heart - two top chambers (the atria) and two bottom chambers (the ventricles). There are valves that separate the top chambers from the bottom chambers. When the AV valves are healthy, they act to prevent the backflow of blood from the ventricles to the atria during contraction of the heart.

  • AV valve dysplasia describes a developmental malformation of the mitral or tricuspid valve, and may be referred to by the specific valve that is affected.