Effect of suckling an isotonic solution of sodium acetate, sodium bicarbonate, or sodium chloride on abomasal emptying rate and luminal pH in calves.

Objectives: To compare abomasal emptying rates in calves after suckling milk replacer or 3 common orally administered electrolyte solution components.

Animals: 5 male calves < 35 days of age.

Procedures: Calves with a cannula fitted in the abomasal body were fed 2 L of milk replacer with or without parenteral administration of atropine (0.

Fibrosarcoma adjacent to the site of microchip implantation in a cat.

A 14-year-old spayed female domestic shorthair cat presented with an interscapular mass. A computed tomography scan, biopsy, and histological examination revealed a fibrosarcoma adjacent to a pet identification microchip. Because the cat was previously vaccinated at this site, it is not possible to establish definitive causation of the fibrosarcoma, but this is the first report of a tumor in the vicinity of a microchip in a cat.

Ultrasonographic measurement of abomasal volume, location, and emptying rate in calves.

Objective: To develop and validate an ultrasonographic method for measuring abomasal volume, location, and emptying rate in suckling calves.

Animals: 9 male Holstein calves < 40 days of age.

Procedure: Before and after calves were fed different volumes of milk replacer or 2 L of oral electrolyte solutions, ultrasonographic measurements of abomasal dimensions (width, length, and height) were obtained by applying a 3.

Determination of abomasal emptying rate in suckling calves by use of nuclear scintigraphy and acetaminophen absorption.

Objective: To develop nuclear scintigraphic and acetaminophen absorption methods for measuring abomasal emptying rate in suckling calves.

Animals: 9 male Holstein-Friesian calves < 30 days old.

Procedure: Calves were fed 2 L of milk replacer, fresh cow's milk, or an isoosmotic (150mM) solution of NaCl, NaHCO3, or sodium acetate containing technetium TC 99m-diethylenetriamine-pentaacetic acid (370 MBq) and acetaminophen (50 mg/kg).

Investigation of pulmonary deposition of a nebulized radiopharmaceutical agent in awake cats.

Objective: To determine whether conscious, unsedated cats will inhale a nebulized material administered via a facemask and whether this material will reach the lower airways.

Animals: 20 healthy adult cats.

Procedure: Technetium Tc 99m-diaminetriaminopentaacetic acid (99mTc-DTPA) was nebulized into a spacer and administered to the cats via a closely fitting facemask.