ArticleJournal of feline medicine and surgery2022
Association between feline hyperthyroidism and thoracic radiographic evaluation of cardiomegaly and pulmonary hyperinflation.
Article in Journal of feline medicine and surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed, 1 citations in OpenAlex.
- Comparative cardiac macroscopic and microscopic study in cats with hyperthyroidism vs. cats with hypertrophic cardiomyopathy.The veterinary quarterly · 2023Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesHyperthyroidism frequently affects middle-to-older-aged cats that can present with cardiorespiratory signs. The effects of hyperthyroidism on cardiac size and function have been previously documented. Anecdotally, pulmonary hyperinflation identified on thoracic radiographs may also be associated with hyperthyroidism; however, there is no literature to support this claim. The goal of this study was to determine any association between hyperthyroidism, pulmonary hyperinflation and cardiomegaly with the following hypotheses: (1) hyperthyroid cats would not have evidence of radiographic pulmonary hyperinflation compared with control cats; and (2) hyperthyroid cats were more likely to have evidence of radiographic cardiomegaly than control cats.
methodsIn this retrospective case-control study, the thoracic radiographs of 52 hyperthyroid cats and 46 non-hyperthyroid cats were evaluated for subjective and objective measurements of pulmonary hyperinflation and cardiomegaly.
resultsThere were no statistically significant differences between hyperthyroid and non-hyperthyroid cats for any variable indicative of pulmonary hyperinflation. The mean ± SD vertebral heart score on lateral views for hyperthyroid cats was 7.75 ± 0.53 and for control cats was 7.55 ± 0.54, which was significantly different ( CONCLUSIONS AND RELEVANCE: While the results of this study suggest that hyperthyroid cats are more likely to have a larger vertebral heart score on lateral views than control cats, the clinical relevance of this finding is unclear given the large degree of overlap between hyperthyroid and non-hyperthyroid cats. In addition, among all cats, a greater total T4 elevation was weakly correlated with a larger vertebral heart score. Hyperthyroidism is not associated with radiographic pulmonary hyperinflation and is an unlikely differential for this radiographic finding.
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