strognyloid stercorarils

Question 1

why to find in the stool

Answer 1

larvae in the stool not eggs

Question 2

IF

Answer 2

filariaform larva L3

Question 3

diagnosis

Answer 3

wet mount of stool
freshly passed stool see larvae (rhabitfwrom larvae)

baermann’s technique to examine for larvae - a type of concentration method

if in pulmonary stage larvae can be found in the sputum

Question 4

clinical symptoms types

Answer 4

1. cutaneous
   dermatitis with erythema
2. pulmonary- hemorrges in alveoli
3. git - diarrhoea often mucous and in heavy infections dysenteric stools may occur

Larval penetration causes petechial haemorrhages and pruritis at the site of entry, frequently with a linear, red eruption (larva currens) as the larvae migrate under the skin. This is normally transient, but may be followed by congestion and oedema. A creeping urticarial rash may occur in some (pre-sensitized) individuals following reinfection. Symptoms similar to broncho-pneumonia with consolidation may result from larval invasion of the lungs together with eosinophilia.

Question 5

tx

Answer 5

ivermectin through to be ore effective than alterantive albendazole treat all infected people not just symptomatic

Question 6

moa

Answer 6

contamination of skin or buccal mucous with soil containing the parasite

Question 7

where do adults live

Answer 7

small intestine

Question 8

what’s very important about this infection

Answer 8

the infection is upheld via auto infection as the larvae rather than pass out of the school reinfect the perianal skin

Question 9

in the immunosuppressed

Answer 9

massive invasion occurs, with profuse diarrhoea, ileum, heptaomegaly, granulomas and abscesses accruing in organs. cns involvement such as meningitis
Watery diarrhoea with mucus is a frequent symptom; its intensity is dependent upon the worm burden. It often alternates with constipation. In severe cases, chronic diarrhoea with malabsorption may ensue.
In the immunosuppressed, malnourished or debilitated, massive tissue invasion may occur. Complications include severe diarrhoea, ileus, hepatomegaly, and multisystem disease due to blood/lymphatic spread. Granulomata and/or abscesses occur in the liver, kidneys, and lungs; CNS involvement produces pyogenic meningitis and encephalopathy. Death is usually a result of septicaemia with E. coli carried by the larvae.

Question 10

what kind of parasite

Answer 10

nematode

Question 11

larva current

Answer 11

autoinfection caused by penetration of the perianal skin or colonic mucosa by infectious larvae as they are excreted in the feces. An urticarial band

Question 12

what’s its unique feature

Answer 12

is the smallest nematode to cause human infection unlike the largest which is ascariasis

Question 13

what’s an interesting thing about the female worm

Answer 13

since only female worms are seen in intestine it was earlier believed that they parthenogenetic and can produce offspring without being fertilised by male, but it has now been established that ,ale worms do exist . males are not seen because they do no imbed into the mucosa and so are eliminated

Question 14

what happens to the rhabitiform larvae in the stool

Answer 14

they can undergo 2 types of devlopment
direct development or indirect development

direct development, they metamorphose into filiiaform

indirect: they live in their free living form they mate in the soil , the fertilised female lays eggs

Question 15

type of oesophagus

Answer 15

cylindrical oesophagus