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Biomedical subjects

N Ackerman

Publications and source records attributed to N Ackerman.

At least 55 records · Page 3Linked to original sources
PubMed1979

Intraconal contrast orbitography in the dog.

Intraconal contrast orbitograms were obtained, using a nonionic water-soluble contrast agent, on 15 normal dogs to evaluate the technique and to define the basal orbitogram. Thirty-three intraconal orbitograms were prepared, utilizing three different injection techniques. In 21 of the intraconal orbitograms, the orbital cone was well outlined with contrast or with the optic nerve visible (or both). These were judged to be of satisfactory diagnostic quality. In the 12 other studies, the presence of most of the contrast material outside the orbital cone resulted in failure to identify the intraconal structures. These were, therefore, classified as nondiagnostic. The contrast agent used provided an adequate density and persisted in the orbital cone long enough for radiograms to be obtained. Serious complications did not appear during the study. Intraconal orbitography provides a safe method for evaluating the orbital cone.

Animals↗
PubMed1979

Percutaneous nephropyelocentesis and nephropyelostomy in the dog: a description of the technique.

Percutaneous nephropyelocentesis or nephropyelostomy was done on 20 anesthetized dogs of both sexes with the aid of fluoroscopy. The upper urinary tracts were visualized by the use of IV radiopaque contrast material and distended by application of an abdominal compression band positioned over the caudal abdomen. Renal pelvic urine was readily obtained by both procedures in each dog. Bloody urine was an infrequent result, and usually occured only after repeated attempts had been made to enter the renal pelvic lumen. To ascertain the degree of renal parenchymal damage caused by passage of the needle and catheter, dogs were euthanatized and necropsied on the 1st, 3rd, 7th, and 14th days after the procedure was done. Repair of the tissue damage was rapid and the lesions were difficult to visualize grossly by the 14th day.

Animals↗
PubMed1978

Splenic disease.

Explore the source record for details and available documents.

Animals↗
PubMed1978

Patent ductus arteriosus in the dog: a retrospective study of radiographic, epidemiologic, and clinical findings.

Twenty-seven cases of patent ductus arteriosus (PDA) in the dog, which were confirmed by cardiac catheterization, surgical exploration, or at necropsy, were reviewed. A machinery murmur, electrocardiographic evidence of left ventricular enlargement, and radiographic evidence of cardiomegaly with an aortic and a pulmonary artery dilatation were consistent features. Surgical repair was successful in 65% of the dogs. The postoperative radiographic and electrocardiographic changes are described. A concomitant congenital defect was present in 2 dogs. The epidemiologic features of 532 dogs identified as having PDA and submitted to the National Cancer Institute's Veterinary Medical Data Program were reviewed. Miniature and Toy Poodles, Pomeranians, and Shetland Sheepdogs were identified as being at high risk for PDA. An excess of females over males was noticed.

Animals↗
PubMed1977

Navicular disease in the horse: risk factors, radiographic changes, and response to therapy.

In a retrospective study, 74 horses met defined historical and clinical features indicative of navicular disease. Most of the affected horses were 4 to 9 years old. Males had a greater risk of navicular disease than females, geldings had a greater risk than stallions, and Quarter Horses had a greater risk than other breeds. Diagnostic radiographic changes were found in 42 of 70 horses examined. The distribution of diagnostic radiographic changes between the right and left fron feet was equal. There was no correlation between the finding of diagnostic radiographic changes and the horse's response to therapy or the type of work for which the horse had been used. A questionnaire regarding the current status of the horses in the study was mailed, and 51 replies were received. Of the 38 horses that were alive at least 6 months after treatment and for which the current status was known, 9 were sound at the time of follow-up (from 7 to 91 months after treatment). Three of these horses had been treated medically, 4 surgically, 1 by corrective shoeing, and 1 not treated. No advantage for medical or surgical therapy was demonstrated. The poor response to therapy in this group of horses suggests that the prognosis for horses with navicular disease should be guarded, and that the probability of a return to a prelameness capacity for work is slight.

Animals↗
PubMed1976

The "tip-of-the-tongue" phenomenon in aphasia.

Forty-two male aphasics, classified as Broc's, Wernicke's, anomic, and conduction, were examined for their ability to partially retrieve acoustic features of words they could not provide in a confrontation naming task (the "tip-of-the-tongue" phenomenon). The results indicated that conduction aphasics were superior to Wernicke's and anomic asphasics in their ability to identify both the first letter and the syllabic length of the words they could not name. Since the aphasic groups were comparable in their naming difficulty, the findings could not be attributed to degree of wordfinding impairment. The difference between groups that were obtained using the TOT technique are discussed with regard to differences in the word finding process.

Aphasia↗