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Pituitary corticotroph macrotumors occur in 10% to 50% of dogs with PDH. Clinical signs may be only those of hypercortisolism or may include neurologic signs such as stupor, inappetance, circling, or pacing. Currently, CT and MRI are the only tests that can confirm the presence of a pituitary macrot...
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Double-phase parathyroid gland scintigraphy, using technetium Tc 99m sestamibi, correctly identified the existence and location of a parathyroid adenoma in a dog with primary hyperparathyroidism. The parathyroid adenoma was removed surgically 2 days after scintigraphy. An area of focal radionuclide ...
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This article reviews potential causes of insulin resistance in dogs and cats. These include hyperadrenocorticism, dioestrus or pregnancy, acromegaly, obesity and excess glucagon secretion. Clinical recognition and diagnosis are discussed..
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Dietary therapy affects diabetes management in the dog and cat directly through control of blood glucose and indirectly through control of obesity and lipid abnormalities. Caloric intake, the feeding schedule, food form, macronutrient composition of the diet, and the presence of any concurrent probl...
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The effect of a high insoluble-fiber (IF) diet containing 15% cellulose in dry matter, high soluble-fiber (SF) diet containing 15% pectin in dry matter, and low-fiber (LF) diet on glycemic control in 6 dogs with alloxan-induced insulin-dependent diabetes mellitus was evaluated. Each diet contained g...
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Pituitary macroadenoma/macroadenocarcinoma (PMA; tumor size greater than or equal to 1 cm in diameter) was diagnosed in 13 dogs after 0.5 to 24 months of mitotane treatment for pituitary-dependent hyperadrenocorticism (PDH). The diagnosis of PDH was established on the basis of results of common test...
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Severe upper cervical spinal cord compression in a 3-year-old spayed Shih Tzu bitch was caused by a dorsally angulated dens. Neurological signs included quadriparesis, severe truncal flexion, ataxia and proprioceptive deficits. Myelography demonstrated spinal cord compression which was relieved by o...
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Pituitary function and short-term clinical effects after transsphenoidal hypophysectomy were investigated in clinically normal dogs. In study I, 8 dogs were given polyionic fluids IV during the first 12 hours after surgery. In study II, 4 dogs were given polyionic fluids IV and glucocorticoid supple...
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Six dogs were fed each of nine diets to evaluate the effects of diet on fecal occult blood test results. The diets represented a range of different type (i.e. canned, dry or semi-moist), protein and vegetable constituents, and fiber contents. Each diet was fed twice daily for five consecutive days; ...
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Hypercalcemia caused by primary hyperparathyroidism was believed to be responsible for seizures in a dog. A diagnostic evaluation showed no primary causes of seizures. After surgical excision of the adenomatous parathyroid gland, phenobarbital treatment was discontinued, without recurrence of seizur...
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Intravenous administration of an ionic radiographic contrast medium was believed to have caused acute oliguric renal failure in a young dog. Intravenous pyelography was done on a healthy 14-month-old female Lhasa Apso prior to reconstructive surgery for pseudohermaphroditism. Within 24 hours of the ...
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An 11-year-old mixed-breed dog was examined because of chronic diarrhea, anorexia, and weight loss. Clinicopathologic abnormalities included anemia and hypoalbuminemia, and protein-losing enteropathy was identified. Acute, unilateral, femoral artery thrombosis developed before the cause of the prote...
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Serum free thyroxine (fT4), thyroxine (T4), and 3,5,3'-triiodothyronine (T3) concentrations were determined in 62 healthy dogs, 51 dogs with hypothyroidism, and 59 euthyroid dogs with concurrent dermatopathy or concurrent illness for which hypothyroidism was a diagnostic consideration. Status of thy...
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Diabetic ketoacidosis (DKA), a complication of diabetes mellitus, is a severe metabolic disease that often requires intensive treatment. Diagnosis of ketosis associated with DKA can be difficult due to variability in the metabolic state of DKA patients. Recognition of the clinical signs and definiti...
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OBJECTIVE: To determine whether pedometers can be used to measure physical activity in dogs. DESIGN: Cross-sectional study. ANIMALS: 26 dogs. PROCEDURE: To determine pedometer accuracy, number of steps recorded with the pedometer as dogs walked, trotted, and ran for a distance of approximately 30 m ...
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OBJECTIVES: To compare Schirmer tear test (STT) values, corneal sensitivity, tear film break up times (TFBUTs), and tear glucose concentrations in relation to conjunctival microflora, and conjunctival cytologic and histologic findings among diabetic cataractous, nondiabetic cataractous, and nondiabe...
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Failure to grow in pups and kittens can be the result of many factors. Dietary, metabolic, endocrine, parasitic, neoplastic, and genetic diseases may be responsible for a failure to thrive alone or in concert with other disorders. A complete history, physical examination, complete blood cell count, ...
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OBJECTIVE: To determine effects of i.v. medetomidine administration on selected clinicopathologic variables in dogs. ANIMALS: 6 healthy adult Beagles. PROCEDURE: Dogs were randomly assigned to each of 3 treatments in a crossover study design. Serum osmolality, urine osmolality, urine pH, and fractio...
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Communication skills are considered a core clinical skill in human medicine. Recognizing the importance of communication skills and addressing them in veterinary curricula, however, is just beginning. In the fall of 2003, the Atlantic Veterinary College, University of Prince Edward Island, markedly ...
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OBJECTIVE: To determine the effects of medetomidine, administered i.v., on serum insulin and plasma glucose concentrations in clinically normal dogs. ANIMALS: 6 healthy adult Beagles. PROCEDURE: Dogs were randomly assigned to each of 3 treatments in a prospective cross-over study design. Serum insul...
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A course book on presenting symptoms, and diseases of internal organs in dogs and cats. There is a self-assessment section containing 100 multiple-choice questions. Other titles in the same series have dealt with small animal surgery, cytology, pharmacology and toxicology..
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BACKGROUND Myocardial fibrosis is a hallmark of hypertrophic cardiomyopathy (HCM). Human patients with HCM have high serum concentrations of biomarkers of collagen synthesis, indicating a profibrotic state. This abnormality exists in sarcomere mutation carriers both with and without overt left ventr...
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OBJECTIVE: To determine whether phenobarbital treatment of epileptic dogs alters serum thyroxine (T4) and thyroid-stimulating hormone (TSH) concentrations. DESIGN: Cross-sectional study. ANIMALS: 78 epileptic dogs receiving phenobarbital (group 1) and 48 untreated epileptic dogs (group 2). PROCEDURE...
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A multicentric prospective study was conducted to monitor the effect of phenobarbital on serum total thyroxine (T4) and thyroid-stimulating hormone (TSH) concentrations in epileptic dogs. Serum T4 concentrations were determined for 22 epileptic dogs prior to initiation of phenobarbital therapy (time...
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Phenobarbital (PB) therapy is frequently associated with elevated serum alanine aminotransferase (ALT) and alkaline phosphatase (AP) activities in dogs without clinical signs of liver disease. The goal of this study was to determine if increased serum ALT and AP activities in clinically healthy PB-t...