Strongyloides stercoralis

Question 1

Common name

Answer 1

Thread worm

Question 2

A ____ Transmitted Helminth

Answer 2

Soil

Question 3

The smallest nematode of man

Answer 3

Strongyloides stercoralis

Question 4

Rarer than _____

Answer 4

hookworms

Question 4

A ______ Parasite (both parasitic and Free-living)

Answer 4

Facultative

Question 5

Usually seen among ______ patients

Answer 5

• elderly
• Immunocompromised

Question 6

Forms: ____ are rarely seen

Answer 6

Eggs

Question 7

Eggs will already hatch in the _________

Answer 7

small intestine

Question 8

Possible although rare: Eggs can be recovered in severe cases; will be seen ___________ in appearance

Answer 8

‘chinese lantern’

Question 9

____ worms will only be seen in the
free-living cycle

Answer 9

Male

Question 10

Only _____ worms are recovered in
humans

Answer 10

Female

Question 11

Females are capable of fertilizing their own
eggs

Answer 11

Parthenogenetic

Question 12

MOT

Answer 12

arval penetration

Question 13

HABITAT

Answer 13

small intestine

Question 14

INFECTIVE STAGE

Answer 14

L3 filariform larva

Question 15

Strongyloides stercoralis: Life Cycle

Male and Female worm undergo ______

Free-Living Phase

Answer 15

reproduction

Question 16

Strongyloides stercoralis: Life Cycle

____ are produced by fertilized female worms

Free-Living Phase

Answer 16

Eggs

Question 17

Strongyloides stercoralis: Life Cycle

Eggs will embryonate in the ____

Free-Living Phase

Answer 17

soil

Question 18

Strongyloides stercoralis: Life Cycle

Eggs will hatch to release the ______

Free-Living Phase

Answer 18

L1 Larva

Question 19

Strongyloides stercoralis: Life Cycle

L1 Larva becomes an ___ Larva, eventually, it will then become ___

Free-Living Phase

Answer 19

• L3
• L4

Question 20

Strongyloides stercoralis: Life Cycle

Forms a new generation of adults

Free-Living Phase

Answer 20

L4

Question 21

Strongyloides stercoralis: Life Cycle

In some unfavorable conditions, the _______ can be the infective form of filariform

Free-Living Phase

Answer 21

L1 Larva

Question 22

Strongyloides stercoralis: Life Cycle

Presence of Infective Filariform larvae = start of the ________

Free-Living Phase

Answer 22

parasitic phase

Question 23

Strongyloides stercoralis: Life Cycle

Infective _______ penetrates a susceptible host

Parasitic Phase

Answer 23

L3 Larva

Question 24

# Strongyloides stercoralis: Life Cycle Once inside the host, it undergo ________ | Parasitic Phase

Answer 24

Heart-Lung Migration

Question 25

# Strongyloides stercoralis: Life Cycle After migrating, larva matures in the___________ | Parasitic Phase

Answer 25

small intestine.

Question 26

# Strongyloides stercoralis: Life Cycle Larva matures to a _______ worm in the small intestine | Parasitic Phase

Answer 26

female

Question 27

# Strongyloides stercoralis: Life Cycle Female worm will undergo _________ to fertilize its own eggs | Parasitic Phase

Answer 27

Parthenogenesis

Question 28

# Strongyloides stercoralis: Life Cycle Eggs are released by the female worm to be burrowed in the ___________ | Parasitic Phase

Answer 28

small intestine

Question 29

# Strongyloides stercoralis: Life Cycle Once in the lining, ____ will mature, and larva will be released | Parasitic Phase

Answer 29

Eggs

Question 30

# Strongyloides stercoralis: Life Cycle Larva will be recovered in the ______ | Parasitic Phase

Answer 30

stool

Question 31

# Strongyloides stercoralis: Life Cycle L1 can possibly be _______ the small intestine | Parasitic Phase

Answer 31

L3 inside

Question 32

# Strongyloides stercoralis: Life Cycle f there is transformation form L1 → L3, there is the possibility of _________ | Parasitic Phase

Answer 32

autoinfection

Question 33

# Strongyloides stercoralis: Life Cycle . L3 can penetrate in the ____________. | Parasitic Phase

Answer 33

intestinal mucosa

Question 34

# Strongyloides stercoralis: Life Cycle plenty of worms and larval stages in the intestine leading to disseminating infections | Parasitic Phase

Answer 34

Hyperinfection

Question 35

# Strongyloides stercoralis: Life Cycle common in elderly and immunocompromised patients which can be life-threatening | Parasitic Phase

Answer 35

Hyperinfection

Question 36

# Strongyloides stercoralis: Life Cycle L1 Larva is more commonly recovered in ____, sometimes L3 | Parasitic Phase

Answer 36

stool

Question 37

# Strongyloides stercoralis: Life Cycle _______ is possible | Parasitic Phase

Answer 37

Recurrence

Question 38

# Strongyloides stercoralis: Life Cycle Life cycle can last for a _____ period of time | Parasitic Phase

Answer 38

long

Question 39

# DIFFERENCES BETWEEN L1 LARVA OF HOOKWORMS AND STRONGYLOIDES SPP short and stout

Answer 39

Hookworm

Question 40

longer buccal cavity

Answer 40

Hookworm

Question 41

less prominent genital primordium

Answer 41

Hookworm

Question 42

long and slender

Answer 42

Strongyloides stercoralis

Question 43

short buccal cavity

Answer 43

Strongyloides stercoralis

Question 44

prominent genital primordium

Answer 44

Strongyloides stercoralis

Question 45

# Strongyloides stercoralis: L3 Larva Take note of the posterior which has a _________ tail

Answer 45

notched or Forked

Question 46

# Strongyloides stercoralis: L3 Larva Larva is _______

Answer 46

unsheathed

Question 47

# Strongyloides stercoralis: Pathology There are many cases of strongyloides in ________ | Vietnam Diarrhea/Cochin China Diarrhea

Answer 47

Vietnam

Question 48

# Strongyloides stercoralis: Pathology Many cases seen among ______, whereas when they went back to US, they experience its disease manifestation | Vietnam Diarrhea/Cochin China Diarrhea

Answer 48

American soldiers

Question 49

# Strongyloides stercoralis: Pathology Described to be as ________ diarrhea | Vietnam Diarrhea/Cochin China Diarrhea

Answer 49

Intermittent

Question 50

# Strongyloides stercoralis: Pathology Due to parasites burrowing into the small intestine to lay eggs, the lining of the intestine

Answer 50

Honeyform appearance of intestinal mucosa

Question 51

# Strongyloides stercoralis: Pathology Affecting the lungs and gastrointestinal tract

Answer 51

Hyperinfection and Dissemination

Question 52

# Strongyloides stercoralis: Pathology Manifestations can reoccur throughout the years; since infection can last for many years

Answer 52

Hyperinfection and Dissemination

Question 53

# Strongyloides stercoralis: Pathology Due to skin penetrating larva

Answer 53

Larva Currens

Question 54

# Strongyloides stercoralis: Pathology Can also be found near the buttocks and inguinal areas

Answer 54

Larva Currens

Question 55

# Strongyloides stercoralis: Pathology attributed to the migrating larva (heart-lung migration)

Answer 55

Pneumonitis

Question 56

# Strongyloides stercoralis: Diagnosis Both to recover larval stages

Answer 56

- FECT - Baermann Technique

Question 57

# Strongyloides stercoralis: Diagnosis To obtain duodenal material

Answer 57

Baele’s String Test/Enterotest

Question 58

# Strongyloides stercoralis: Diagnosis recovery of larvae

Answer 58

Harada Mori Test

Question 58

# Strongyloides stercoralis: Diagnosis Examine larva during migration

Answer 58

Sputum

Question 59

# Strongyloides stercoralis: Diagnosis Agar Plate Culture wherein you will put the _____ on the blood agar plate. | Agar Plate Culture/Method

Answer 59

fecal matter

Question 60

# Strongyloides stercoralis: Diagnosis If there is larva in the fecal matter, the larva will tend to move to the surface carrying the _______ on the feces | Agar Plate Culture/Method

Answer 60

bacteria

Question 61

# Strongyloides stercoralis: Diagnosis After incubation, Trails of __________ on the agar plate because the bacteria are carried by the larva as it moves through the surface | Agar Plate Culture/Method

Answer 61

bacterial colonies

Question 61

Strongyloides stercoralis: Treatment

Answer 61

Ivermectin with albendazole

Question 62

# TO DISTINGUISH HOOKWORM OR STRONGYLOIDES INFECTION IF Abundant larval stages in fresh specimen

Answer 62

Strongyloides infection

Question 63

# TO DISTINGUISH HOOKWORM OR STRONGYLOIDES INFECTION IF Presence of primarily eggs in the fresh specimen

Answer 63

Hookworm infection

Question 64

# Strongyloides stercoralis: Epidemiology Less _______ as compared to hookworms

Answer 64

common

Question 65

# Strongyloides stercoralis: Epidemiology Most cases are _____

Answer 65

asymptomatic

Question 66

# Strongyloides stercoralis: Epidemiology Disseminated and Hyperinfection are common among ________

Answer 66

immunocompromised

Question 67

# Other Strongyloides species: Seen Central Africa

Answer 67

Strongyloides fulleborni

Question 68

# Other Strongyloides species: “Swollen belly” sickness

Answer 68

Strongyloides fulleborni

Question 69

# Other Strongyloides species: Can affect monkeys and humans

Answer 69

Strongyloides fulleborni

Question 70

# Other Strongyloides species: Causing swimmer’s itch, swamp itch

Answer 70

Zoonotic Strongyloides

Question 71

# Other Strongyloides species: Zoonotic Strongyloides:

Answer 71

- S. myopotami - S. procyanis (raccons)