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May 17, 2026Japanese Journal of Large Animal Clinics

A clinical case of wheezing associated with rib fractures in a crossbred calf born by natural delivery

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Authors

KMK. MaezawaMMM. MaezawaRUR. Ueda

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Overview

Clinical case reveals rib fractures causing wheezing in a calf, suggesting complications can arise from natural delivery.

Key Points

  • To investigate the cause of wheezing in a crossbred calf born via natural delivery with rib fractures.
  • A 31-day-old crossbred calf presented with decreased appetite and wheezing. Observations included blood tests and CT scans for rib fractures.
  • Direct laryngoscopy was performed to examine the larynx for abnormalities.
  • The calf was euthanized for necropsy, confirming tracheal compression by rib fractures.
  • CT scans revealed non-union of left ribs 1-4 and right ribs 1-2, causing tracheal narrowing.
  • Necropsy confirmed the rib fractures and their association with right lung adhesion but no other abnormalities were found.
  • Wheezing was attributed to tracheal pressure from the rib fractures, suggesting potential risks during natural delivery.

Cite This Study

Maezawa et al. (2025) studied this question.

synapsesocial.com/papers/6a095a427880e6d24efe0665https://doi.org/10.4190/jjlac.16.47
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