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Leeching as initial treatment in a cat with polycythaemia vera
C S Nett1, P Arnold, T M Glaus
1Clinic for Small Animal Internal Medicine, University of Zurich, Switzerland.
The Journal of Small Animal Practice
|November 28, 2001
Summary
Leeches offer a simple, effective initial treatment for feline polycythaemia vera when phlebotomy is not feasible. This non-invasive method successfully reduced packed cell volume (PCV) in a cat with this rare blood disorder.
Area of Science:
- Veterinary Medicine
- Hematology
Background:
- Polycythaemia vera is a rare myeloproliferative neoplasm characterized by excessive red blood cell production.
- Diagnosis in veterinary patients requires excluding secondary causes of erythrocytosis.
Observation:
- A three-year-old domestic shorthaired cat presented with seizures and severe erythrocytosis (PCV 79%).
- Initial treatment with phlebotomy was not possible due to hyperviscosity.
Findings:
- A novel approach using four leeches was employed for initial bloodletting.
- Leech therapy reduced the packed cell volume (PCV) from 79% to 64% within hours, and to 56% after 24 hours.
- Long-term management was achieved with hydroxyurea and intermittent phlebotomy.
Implications:
- Leech therapy presents a viable, non-invasive alternative for initial management of polycythaemia vera in cats when phlebotomy is contraindicated.
- This case highlights an innovative therapeutic option for a rare feline hematological disorder.