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Polycythemia in a llama

E J Gentz1, E G Pearson, E D Lassen

  • 1College of Veterinary Medicine, Oregon State University, Corvallis 97331.

Journal of the American Veterinary Medical Association
|May 1, 1994
PubMed
Summary
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A llama developed secondary absolute polycythemia, a condition causing elevated red blood cells. This led to respiratory distress during stress, highlighting the need to consider polycythemia in llamas with exercise intolerance.

Area of Science:

  • Veterinary Medicine
  • Internal Medicine
  • Hematology

Background:

  • Polycythemia, an increase in red blood cell mass, can affect camelids.
  • Clinical signs in affected animals may be non-specific or mimic other conditions.

Observation:

  • A llama exhibited a significant increase in PCV from 50.8% to 74.0% over 19 months.
  • Clinical signs included dyspnea and tachypnea during stress, with auscultation suggesting pulmonary congestion rather than pneumonia.

Findings:

  • Secondary absolute polycythemia was diagnosed based on high serum erythropoietin levels and absence of hypoxia.
  • Necropsy revealed pulmonary and hepatic congestion; the underlying cause of polycythemia remained undetermined.

Implications:

Related Experiment Videos

  • Polycythemia should be considered in llamas presenting with exercise intolerance and abnormal respiratory sounds.
  • This case highlights the importance of recognizing polycythemia as a differential diagnosis in llamas with respiratory signs.