F2 12/6 2pm Helminthes
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25 terms
Occitan | English |
|---|---|
| Definitive host |  not pathogen in site of repro |
| Intermediate host | pathogen in stepping stone |
| Nematode Ascaris | affects lots of ppl. SI->blood->LUNG->SI (6-12mo) -> soil. Must do soil and lung b/c produce 100k eggs/day which would kill host. Common in pigs. NLM to lungs. |
| Nematode Enterobius vermincularis | common in children and temperate pin worm. has football shaped eggs released when mom crawls out of anus at night. Treat with pyrantal pamoate or metranidazole after scotch tape confirm |
| Nematode larval migrans (NLM) | occurs when humans are intermediate host. |
| Nematode T. canis | infects eyes and liver NLM. Cystecerosis also canine (nNLM) |
| Nematode B. procyonosis | very common in raccoons, other animals and birds. Meningitis and brain damage NLM and VLM. Severe if Dx |
| CNS NLMs | B. procyonosis, Angiostrongylus (rat-lung), Cysterosis (non-nematode). Check CSF for eosinophilia |
| Nematode A. costaricensis | GI NLM |
| Nematode A. brazilensis | another dog NLM can caused severe Type IV DTH in skin. |
| Visceral Larval Migrans(VLM) | humans terminal host. Often in kids during geophagia period or after puppy exposure :(. Invade heart, lungs, liver, brain, and muscle. Cause fever, anorexia, wt loss, cough, wheezing. If not-asthmatic, check it!!!! esp w/ eosinophilia and hypersensitivity syndrome |
| Nematode Strongyloides stercoralis | femal only lives in SI for life of pt possibly unnoticed unless eosinophilia causes suspicion. Immunosuppression allows Hyperinfection syndrome. Soil->rhabditiforms in stool->soil 3-4wk->feet->>GI. Canine and 'ground itch' |
| Nematode Thrichonella | animal specific species. Cook yo meet and freeze yo meet. Keep yo meet from yo poo. 4wk lifecycle. GI day 2-7 with NVD, 2-5wk larval migration affecting eye, heart, and CNS. Bx tongue. Splinter hemorrhages. Treat w/ steroids and metronidazole |
| Filiriasis | just a round worm disease. Sheath Agenic when present |
| Lymphatic filariasis/W. banroft | several mosquito bite allows infection with migration from liver to lymph to genital/legs. May block lymph w/hypersensitivity |
| Nematode Onchocerciasis volvulus | contains inflammatory bac-> river blindness w/o Abiotics or yearly larval suppression. S. America and Africa |
| Nematode Schistosoma | 1-2.5 cm flatworm with tropical snail intermediate. Only infectious first few hours post-release, but highly through skin. Ova in stool, urine, or rectum. CDC FAST-ELISA det. presence then W. Blot det. size. Can live 10 yrs. Infects liver |
| Ketayama fever | from S. mansonii in S. america, Middle east, Carribbean, and Africa. female swims downvein. from S. japonicum rarely. Cough, fever, abdo pain, diarrhea, hepatosplenomegaly. Periportal calcification->portal HTN->visible abdo veins |
| Nematode S. hematobium | causes urinary carcinoma n egypt |
| Clinorchia sinensis | from fish in Korea, China, Taiwan, and Vietnam. May cause cholelithiasis and cohlangiocarcinoma. Light bulb egg. among sushi disease |
| Cestode taenia | very flat worm w/no gut. Very motile in SI. Nonpathogen in adults. |
| Cestode T. splium | undercooked, never frozen pork. eggs cause harmful cysterci. Cysts cause tapeworm (pork). Dx with stool ova, passed worm, or cysterci MRI/CT esp in brain |
| Hymenolepsis | may need insect intermediate (dimunita) or not (nana) |
| Diphyllobbathrum latum | copepod>fish>humans. asymptomatic except B12 deficiency in Finnish folk. Eggs have lid. |
| Echinococcus granulosis | definite in dog>sheep. Humans eat somewhere.Hepatic cyst must be 10 cm to cause symptoms. Surgically remove or treat with albendazole before rupturs>anaphylaxis. |
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