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Immersion Foot Syndrome in 6 Equids Exposed to Hurricane Floodwaters
Brianne M Taylor1, M Keith Chaffin2, Aline Rodrigues Hoffmann1
1Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA.
Veterinary Pathology
|February 22, 2020
Summary
Prolonged water exposure caused a condition similar to immersion foot syndrome in horses and donkeys after Hurricane Harvey. This veterinary pathology involves skin necrosis and vasculitis, potentially impacting animal health.
Area of Science:
- Veterinary Pathology
- Equine Medicine
- Environmental Toxicology
Background:
- Immersion foot syndrome, characterized by dermal ischemic necrosis, was first documented in humans during World War I.
- Prolonged exposure to water can lead to significant tissue damage.
Observation:
- This report details a condition resembling human immersion foot syndrome in 5 horses and 1 donkey exposed to floodwaters during Hurricane Harvey.
- Necropsy revealed distinct dermal defects along a demarcated "water line" on the animals' trunks.
Findings:
- Histologic examination showed moderate to severe perivascular dermatitis with vasculitis and coagulative necrosis, indicative of ischemia.
- Lesion severity increased from the ventral trunk to distal limbs and was more pronounced in chronic cases.
Implications:
- The pathophysiology involves multifactorial changes in dermal microvasculature, leading to thrombosis and ischemia.
- Early recognition of this condition is crucial for effective patient management and reducing animal morbidity.
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