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An FHO, or femoral head ostectomy, is a surgical procedure that aims to restore pain-free mobility to a diseased or damaged hip by removing the head and neck of the femur (the long leg bone or thighbone). This procedure is commonly recommended for cats, especially those who are at a healthy weight. Active cats often experience better results with FHO than less-active cats. It is important to follow your veterinarian's post-operative instructions. Most cats will show signs of complete recovery approximately six weeks post-operatively.
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Fenbendazole (brand names Panacur®, Safe-Guard®) is a medication used to treat a variety of parasites in dogs. Its use in cats for the treatment of parasites is off label or extra label. Fenbendazole comes as oral granules or as a liquid suspension and is given by mouth. At regular doses, fenbendazole does not usually cause any side effects. Fenbendazole should not be used in puppies younger than six weeks of age or in sick animals.
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Fentanyl is an opioid medication used off-label to treat pain in cats and dogs. It is often given as an injection in hospital, but patches may be prescribed to deliver fentanyl transdermally (through the skin) for pets at home. This handout describes common side effects, risk factors, and drug interactions. If a negative reaction occurs, please call your veterinary office.
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Ferrous sulfate is given by mouth and is used off label to treat iron-deficiency. Use as directed by your veterinarian. Common side effects include gastrointestinal upset such as discomfort, constipation, nausea, vomiting, and diarrhea. Do not use in pets that are allergic to it. If a negative reaction occurs, please call your veterinary office.
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To be classified as a fever of unknown origin (FUO), the body temperature must be above 103.5°F (39.7°C) for longer than a few days, with no obvious underlying cause based on history and physical examination. A fever is beneficial to the body, but if a fever remains above 106°F (41.1°C) for more than a few days several consequences occur within the body and can be life threatening. If your pet has a fever, your veterinarian will perform a thorough physical examination, perform diagnostic blood tests, urine culture, and possibly other diagnostic tests. Antibiotics are often prescribed. Cats that have persistent fever or a fever that waxes and wanes must undergo a thorough work-up so that the cause of fever can be discovered and treated before irreversible damage occurs.
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Fibrocartilaginous embolus (FCE) or fibrocartilaginous embolic myelopathy (FCEM) refers to a condition caused by a piece of fibrocartilaginous material thought to originate from an intervertebral disc, lodging in an artery or vein, causing decreased blood flow to an area of the spinal cord. Confirmatory diagnosis requires MRI. Treatment is primarily supportive.
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Usually caused by a bite from another cat, fight wound infections can lead to the development of an abscess (a pocket of pus) or cellulitis (pain and swelling in the area of the bite). A cat’s sharp canine teeth can easily puncture the skin of another cat, leaving small, deep, wounds that seal over quickly, so it is important that your cat is seen by a veterinarian for treatment as soon as possible after being bitten.
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This handout discusses how to find reliable information for your pet on the internet. Recommendations are to always seek out trusted sources, such as your own veterinary clinic, veterinary schools, and those sites with content written by veterinarians. Try to avoid sites offering homemade cures, are heavily weighted with opinions, or offer prescription medications without requiring a veterinarian’s prescription.
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Fine needle aspiration is a useful tool to collect samples for cytology and is often used to diagnose abnormal lumps on your pet's body as well as evaluation of fluid samples and tissue surfaces. It is relatively simple and inexpensive but can provide a lot of information. Depending on results, further tests may be indicated to best help your pet.
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Fipronil is used topically to treat flea, tick, and chewing lice infestations. Side effects are uncommon but may include skin irritation at the application site. Do not use this product on pets less than 8 weeks old, geriatric pets, or sick/weak pets.