Relationship between estrous behavior in pregnant mares and the presence of a female conceptus     

Karen E.N. Hayes DVM  MS  O.J. Ginther VMD  PhD 《Journal of Equine Veterinary Science》1989,9(6):316-318

Unsolicited reports of estrous behavior in mares thought to be pregnant were received from owners or caretakers of Arabian mares. Estrous behavior was confirmed and mares were examined for pregnancy. Gender of the conceptus was determined at foaling in 11 mares in which estrous behavior was confirmed while an apparently viable, ultrasonically normal-appearing conceptus was present. In 9 mares in which the day of ovulation was known (Day 0), the estrous behavior occurred on Day 12, 13 or 14 (5 mares), Day 18 or 20 (2 mares), Day 40 (1 mare) and Day 60 (1 mare). In another study, 55 pony mares were observed for estrous behavior every 3 days for 20 minutes during Days 11 to 40. Estrous behavior was observed in 1 mare (2%) on Day 24. Combined for the 2 studies, the incidence of a female conceptus (12/12) was greater (P<0.01) than the incidence of a male conceptus (0/12) in mares that exhibited estrous behavior.  相似文献   

Common conduction disturbances     

John D. Bonagura DVM  MS  Diplomate ACVIM  Michael S. Miller MS  VMD  Diplomate AVP 《Journal of Equine Veterinary Science》1986,6(1)

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Accuracy of Arthroscopic Identification of Equine Carpal Lesions     

MARK B. HURTIG DVM    PETER B. FRETZ VMD  DiplomateACVS    CECIL E. DOIGE dvm  PhD JONATHAN NAYLOR BVSc  PhD  DiplomateACVS 《Veterinary surgery : VS》1985,14(2):93-98

The equine carpal joint was used to evaluate arthroscopic diagnosis of lesions created in joints obtained from horses euthanized for reasons other than lameness. Full-thickness articular defects were made in 13 sites within the antebrachiocarpal joint and middle carpal joint approximating those found in diseased carpal joints. Arthroscopic evaluation of the lesions included location, depth, and size of the defects. The joints were subsequently examined grossly. Results showed that, when compared to gross evaluation, arthroscopy is capable of accurately identifying subtle changes in articular cartilage and bone. A statistically significant increase in error rate was found for lesions at the medial aspect of the proximal radial carpal bone. Other sites with limited arthroscopic access were the proximal ulnar carpal bone, the proximal fourth carpal bone, and the distal intermediate carpal bone. The accuracy of arthroscopic identification of lesions improved significantly during the study as experience with the technique was gained.  相似文献   

RADIOGRAPHIC AND ULTRASONOGRAPHIC EVALUATION OF EGG RETENTION AND PERITONITIS IN TWO GREEN IGUANAS (IGUANA IGUANA)     

Nancy E.  Love  DVM  James P.  Douglass  DVM  MS  Gregory  Lewbart MS  VMD  Michael  Stoskopf  DVM  PhD 《Veterinary radiology & ultrasound》1996,37(1):68-73

The radiographic technique and radiographic and sonographic findings in two green iguanas with egg retention and peritonitis are described. Neither radiography nor ultrasound provided for identification of free eggs within the coelomic structure secondary to presumed oviduct rupture. Gravidity and coelomic effusion were confirmed by both radiography and ultrasound. Radiography and ultrasound are valuable tools in the diagnosis of egg retention and peritonitis in the green iguana.  相似文献   

MAGNETIC RESONANCE IMAGING OF THE PRESUMED NORMAL CANINE ADRENAL GLANDS     

Francisco J.  Llabres-Diaz  VMD  DVR  MRCVS  Ruth  Dennis  MA VetMB  DVR  MRCVS 《Veterinary radiology & ultrasound》2003,44(1):5-19

Forty-three dogs without evidence of endocrine disease that underwent spinal or abdominal magnetic resonance imaging (MRI) for clinical reasons were studied. Because the procedures were not optimized for inclusion of the adrenal glands, they were not always visible in all planes. Eighty-five of the 86 adrenal glands were seen and only the left gland in a 6-month-old Irish wolfhound could not be found. The right adrenal gland lay cranial to the left in all of the animals in which both glands were seen. The best landmarks for localization of the glands were vascular; both adrenal glands were always cranial to the ipsilateral renal vessels and in the region of the celiac and cranial mesenteric arteries. Various measurements were made on all the available scan planes. In some dogs the whole adrenal gland was difficult to visualize clearly, and this hindered the measuring process, especially when the right adrenal gland was in close contact with the caudal vena cava. The adrenal glands were mainly linear in shape but also had a variable degree of modification of their poles, especially the cranial pole of the right adrenal gland, which tended to be consistently wider and to present different shapes (rounded, arrowhead, inverted P, hook-shaped, triangular, or dome-shaped). Two main patterns of signal intensity were seen on fast spin echo (FSE) sequences (T2-weighted, T1-weighted, and T1-weighted after administration of a paramagnetic contrast medium): homogeneous and hypointense to surroundings or a corticomedullary type pattern with a hyperintense central area surrounded by a hypointense rim of tissue. The outline of the left adrenal gland was always very clear. The clarity of outline of the right adrenal gland was more variable, especially if it was in contact with the liver or the caudal vena cava. It was felt that the amount of retroperitoneal fat was not as important as stated in the human literature for visualization of the adrenal glands and that with an appropriate selection of scan planes and pulse sequences good assessment of the adrenal glands can be performed with MRI in canine patients.  相似文献   

Hiatal Hernia Repair by Restoration and Stabilization of Normal Anatomy An Evaluation in Four Dogs and One Cat   总被引：1，自引：0，他引：1  

CAROLINE PRYMAK BVSc    H. MARK SAUNDERS VMD  DiplomateACVR  ROBERT J. WASHABAU VMD  DipiomateACVIM 《Veterinary surgery : VS》1989,18(5):386-391

Clinical signs of esophageal hiatal hernia in four dogs and one cat included regurgitation, vomiting, hematemesis, hypersalivation, dysphagia, and dyspnea. Thoracic radiographs, esophagram, and fluoroscopy were used to demonstrate cranial displacement of the esophagogastric junction and part of the stomach through the esophageal hiatus. Other findings included megaesophagus, esophageal hypomotility, gastroesophageal reflux, and pneumonia. Medical therapy failed to resolve the clinical signs. Reduction in size of the esophageal hiatus, fixation of the esophagus to the diaphragmatic crus (esophagopexy), and a left fundic gastropexy were performed. Surgical results were considered good to excellent.  相似文献   

FRACTURED SCLERAL OSSICLES IN A RED TAIL HAWK     

Denise M.  Lindley  BS  DVM  John T.  Hathcock  DVM  MS  William W.  Miller  DVM  MS  M. Nina  DiPinto  VMD 《Veterinary radiology & ultrasound》1988,29(5):209-212

Following head trauma, the left globe of a Red Tail Hawk showed demonstrable indentation on palpation. Recurrent anterior chamber collapse and reformation dependent on head position was the most significant clinical finding. A fracture of the scleral ossicles in the caudal portion of the scleral ring was identified in the rostrocaudal radiograph of the skull. Conservative management of the fracture resulted in phthisis bulbi. Fractured scleral ossicles have been shown radiographically in the enucleated globe but have not been previously demonstrated in the eye of the living bird.  相似文献   

Complete Heart Block in a Dog Seropositive for Borrelia burgdorferi: Similarity to Human Lyme Carditis   总被引：4，自引：0，他引：4  

Steven A. Levy VMD  Paul Harrison Duray MD 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1988,2(3):138-144

Lyme disease has been recognized in humans since 1975 when it was associated with an outbreak of oligoarthritis in children in Lyme, Connecticut. Erythema chronicum migrans (ECM) is a clinical marker for the human disease, which usually appears within 3 to 32 days after an infected tick bite. Lyme disease is caused by spirochete, Borrelia burgdorferi, which is vectored by the hard ticks Ixodes dammini or Ixodes pacificus in the United States. In humans, Lyme disease has been found to cause a variety of clinical syndromes including cardiopathy, neuropathy, dermatopathy, and arthropathy. Human Lyme carditis is characterized by varying degrees of atrioventricular (AV) heart block that usually resolve regardless of therapy. Lyme disease has been reported in the dog as an arthropathy. This article reports a case of complete heart block and myocarditis in a dog with a positive titer for B burgdorferi, in which clinical and pathologic findings were similar to those seen in human Lyme myocarditis.  相似文献   

A Field Evaluation of Benzimidazole and Nonbenzimidazole Drugs in a Herd of Dairy Goats     

Christine Uhlinger VMD    John Fetrow VMD  MBA  Colin Johnstone BVMS  PhD 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1988,2(3):113-116

A study was conducted to investigate the efficacy of six anthelmintics in a herd of dairy goats. Pretreatment larval cultures indicated that the goats were infected with Haemonchus contortus and Trichostrongylus colubriformis. Three separate treatment regimens were administered. In each trial, mature nonlactating goats were allocated into two treatment groups and a control group. Treatment groups received thiabendazole (TBZ) or levamisole (LEV), mebendazole (MBZ) or fenbendazole (FBZ), and morantel tartrate (MOR) or ivermectin (IVR). LEV, MOR, and IVR reduced fecal strongyle egg counts by 99% to 100% of pretreatment values. The benzimidazole (BZD) drugs changed pretreatment fecal egg counts by +2% to -32%. Results of posttreatment larval culture demonstrated the presence of H contortus larvae following the administration of BZD drugs.  相似文献   

College News     

R. Lee Pyle VMD 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1988,2(3):158-158

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