Tissue Nematodes Flashcards
1
Q
Trichinosis (Trichinella spiralis)
A
- Inadequatly cooked or encysted meat; PORK.
- Survives in human skeletal muscle, myositis (diaphragm, ocular muscles, tongue, intercostals, deltoids, gastrocnemius), calcifications
- Classic sign: periorbital edema, swelling around the eyes, which may be caused by vasculitis.
- Extreme eosinophilia (>50% of leukocytes)
- May have CNS or cardiac involvement
2
Q
Visceral Larva Migrans / Toxocariasis (Toxocara canis & T. catis)
A
- ingestion of fecal contaminated food (from dogs/cats)
- hypereosinophilia, pneumonitis, hypergammaglobulinemia
- cheif symptom: loss of vision in one eye.
- usually Self-limited
3
Q
Cutaneous Larva Migrans (“Creeping eruption”)
A
- spread through skin on contact (dogs and cats major source of of disease)
- severe, itching, inflammation
4
Q
Dracunculiasis / Guinea worm (Dracunculus medinensis)
A
- infection of connective and subcutaneous tissues
- transmitted by drinking water contaminated with intermediate host, crustacean of genus Cyclops
- year incubation: symptoms: systemic allergic reaction, blisters that burst upon contact with water with female worm partially emerging
- dead worms provoke intense inflammatory response
