Publications by authors named "H W Tvedten"

Objectives: A common and severe error in identifying neutrophils in feline blood samples by the IDEXX ProCyte Dx haematology analyser (ProCyte) has been reported. The hypothesis was that the same or similar error would be identified during analysis of canine blood samples and that white blood cell dot plot evaluation would be critical to detect and avoid erroneous results.

Materials And Methods: Eighty-six canine blood samples collected for clinical diagnosis of hospital patients were evaluated.

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Standardization of tumor assessment lays the foundation for validation of grading systems, permits reproducibility of oncologic studies among investigators, and increases confidence in the significance of study results. Currently, there is minimal methodological standardization for assessing tumors in veterinary medicine, with few attempts to validate published protocols and grading schemes. The current article attempts to address these shortcomings by providing standard guidelines for tumor assessment parameters and protocols for evaluating specific tumor types.

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Counting mitotic figures (MF) in hematoxylin and eosin-stained histologic sections is an integral part of the diagnostic pathologist's tumor evaluation. The mitotic count (MC) is used alone or as part of a grading scheme for assessment of prognosis and clinical decisions. Determining MCs is subjective, somewhat laborious, and has interobserver variation.

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Background: Endotoxemia is a common and severe disease of horses. Most previous studies have monitored changes caused by a bolus dose of endotoxin over short time periods.

Objectives: We aimed to describe inflammatory responses to endotoxin with inflammatory and hematologic markers monitored over a longer time than has been performed in the past using more prolonged endotoxin exposures.

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