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Hookworms Flashcards

1
Q

New World hookworm, American hookworm

A

Necator americanus

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2
Q

Adults are
stout. Cervical curvature (appear s like a “hook” )

A

N.a

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3
Q

Disease of N.a

A

Necatoriasis Uncinariasis

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4
Q

Common name of Ancylostoma duodenale

A

Old World Hookworm

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5
Q

Common name of Ancylostoma caninum

A

Dog hookworm

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6
Q

Common name of Ancylostoma braziliense

A

Cat and dog hookworm

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7
Q

Adults are
stout Cervical curvature (appear s like a “hook” )

A

Necator americanus and Ancylostoma duodenale

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8
Q

Tends to
follow the general curvature of the body
Looks like a
letter
“C”

A

Ancylostoma caninum and Ancylostoma braziliense

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9
Q

Adult hookworm form and color?

A

Fusiform and grayish white

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10
Q

Male adult hookworm distinguishing charac

A

Broad, caudal bursa with rib-like rays

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11
Q

No teeth; Pair of triangular subventral lancets/ semilunar cutting plates

A

N.a

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12
Q

Adults: small, cylindrical fusiform, greyish white nematodes
where the females are larger than the males

A

N.a

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13
Q

The posterior end of the males are usually broad,
membranous, it has a caudal bursa with ribbed like rays for copulation

A

N.a

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14
Q

Parasite?The posterior end of the males are usually broad,
membranous, it has a caudal bursa with —- for copulation

A

N.a; ribbed like rays

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15
Q

2 pairs of unfused ventral teeth similar size

A

A.d

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16
Q

Adult ———, is slightly larger than your ———

A

A.d ; N. a

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17
Q

Can cause cutaneous larval migrant causing creeping eruption

A

A.caninum

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18
Q

bursa is supported by long, slender rays

A

A.d

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19
Q

slightly larger than your Necator americanus

A

A.ceylanicum

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20
Q

in the Philippines the first human case was reported in 1968
from a 53-year-old woman from Ilocos Norte, where 23 adult
worms were collected from the patient

A

A.ceylanicum

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21
Q

Rhabditiform buccal cavity of s. Stercoralis is?

A

Short

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22
Q

Rhabditiform buccal cavity of hookworm is?

A

Long

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23
Q

Rhabditiform genital primordium is s.stercoralis is?

A

Large

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24
Q

Rhabditiform genutalmprimordium of hookworms is?

A

Small

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25
Q

Filariform esophagus of s.stercoralis is?

A

Long

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26
Q

Filariform esophagus of hookworms is?

A

Short

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27
Q

Filariform tail of s.stercoralis is?

A

Notched

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28
Q

Filariform tail of hookworm is?

A

Pointed

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29
Q

Tends to follow the general
curvature of the body
- Looks like a letter “C”

A

A. caninum A. brazilinse

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30
Q

New World Hookworm

A

 Necator americanus

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31
Q

cat hookworm

A

Ancylostoma braziliense

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32
Q

dog hookworm

A

Ancylostoma caninum

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33
Q

how many cell stage when passed in the feces

A

4-8

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34
Q

With Uncleaved Yolk mass or a Cleaved Embryo surrounded by a Clear Zone

A

hookworm ova

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35
Q

how many stages in cleaved embryo?

A

2-8

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36
Q

form of larva with Very small genital primordium

A

rhabditiform larva

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37
Q

form of larva with Longer and slender with a pointed posterior end

A

Filariform larva

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38
Q

form of larva with Mouth is close with a protecting sheath

A

filariform larva

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39
Q

well-developed buccal capsule

A

adult hookworms

40
Q

buccal cavity of ______ with 1 pair of semilunar cutting plates,
dorsal median tooth, deep pair of
Triangular Subventral Lancets

A

Necator americanus

41
Q

buccal cavity of ____ with 2 pairs of fused ventral teeth

A

ancylostoma duodenale

42
Q

buccal cavity of ___ with 3 pairs of ventral teeth

A

ancylostoma caninum

43
Q

buccal cavity of ___ with 1 pair of larger outer teeth and 1 pair
of very inconspicuous median teeth

A

ancylostoma braziliense

44
Q

copulatory bursa of ____ with Fused spicules; deep cleft, bioartite dorsal rays

A

necator americanus

45
Q

copulatory bursa of ____ with Unfused spicules; shallow cleft
- Tripartite dorsal rays

A

a. duodenale

46
Q

copulatory bursa of ___ with bursa is supported by long,
slender rays

47
Q

copulatory bursa of ___ with bursa is supported by short
stubby rays

A

a.braziliense

48
Q

9,000 eggs/day

A

n.americanusq

49
Q

parasite? Passed din feces and produce the Rhabditiform larvae in _____ days under
favorable conditions ( ___ degrees celsius)

A

n.america; 1-2 days; 23-33 deg C

50
Q

Can lay 30, 000 eggs/day

51
Q

Eggs: die in few hours at 45 deg C

52
Q

eggs survive in 7 days at O deg C

53
Q

Cause cutaneous larval migrans causing creeping eruption

54
Q

eggs of _____ is Slightly large then N. americanum

55
Q

1st Human case: 1968 in Ilocos Norte from 53 years old woman where 23 adult worms collected

56
Q

disease of n.america

A

necatoriasis/uncinariasis

57
Q

disease of ancylostoma species

A

ancylostomiasis

58
Q

transmission of ground itch, coolie itch/due itch

A

skin penetration

59
Q

Related to contact with the soil
o Dermatitis at the site of entrance of
filariform

A

. Ground itch / Coolie itch / Dew itch

60
Q

Intense Itching, Edema and Erythema and
later Papulovesicular Eruption / Lesion

A

Ground itch / Coolie itch / Dew itch

61
Q

where bacteria enter the skin

62
Q

pathologic larval stage last up to ?

63
Q

distinguishing charac of ground itch?

A

Papulovesicular Eruption / Lesion

64
Q

rate of several mm to a few cm per day

A

Creeping eruption/Cutaneous larval migrans (Plumber’s itch/ Duck Hunter’s itch)

65
Q

Pruritus: provokes scratching with subsequent pyogenic infection

A

Creeping eruption/Cutaneous larval migrans (Plumber’s itch/ Duck Hunter’s itch)

66
Q

Due to the exposure of the skin to the filariform larvae of A. braziliense and A.
caninum, occasionally of N. americanus and A. duodenale.

A

Creeping eruption/Cutaneous larval migrans (Plumber’s itch/ Duck Hunter’s itch)

67
Q

Creeping eruption/Cutaneous larval migrans (Plumber’s itch/ Duck Hunter’s itch) distinguishing characteristic

A

“Serpiginous tunnel” in the stratum germinativum of the skin

68
Q

Petechial hemorrhages with Eosinophilic and Leukocytic Infiltration that induces
Cough and Pyrexia due to location of parasite

A

Pulmonary lesions: Wakana disease

69
Q

Migrating larvae break out of bronchial capilliaries

A

Pumonary lesions: Wakana disease

70
Q

Patient usually show no signs and symptoms

A

Pumonary lesions: Wakana disease

71
Q

____ secondary to creeping eruption

A

bacterial infection

72
Q

Chronic blood loss due to continuous mechanical suction of blood from the
intestinal mucosa

A

Hookworm anemia

73
Q

presence of bleeding areas left by the adult as they transfer to new areas

A

hookworm anemia

74
Q

Blood Loss:
 N. americanus:

A

0.03-0.05 ml/day

75
Q

Blood Loss: A duodenale:

A

0.16 – 0.34 ml/day

76
Q

Blood picture of hookworm anemia

A

mycrocytic hypochromic anemia

77
Q

hookworm anemia is dependent on?

A

 Iron content of the host diet
 State of Iron reserves
 Intensity and duration of the infection

78
Q

Presence of bleeding areas in the intestinal mucosa

A

Hookworm anemia

79
Q

blood picture:
Dyspnea on exertion, Weakness and Dizziness

A

2g of Hgb/1000mL of blood:

80
Q

Loss of protein due to a combined loss of blood and lymph

A

Hypoalbuminemia

81
Q

Protein loss is as well in excess of the loss of RBC

A

Hypoalbuminemia

82
Q

is it possible to avoid hookworm anemia?

83
Q

Pathology of Hookworm Infection:

A

 The skin at site of entry
 The lung
 The small intestine (Habitat)

84
Q

characteristic of the lesion

A

Ground itch and creeping eruption

85
Q

the heart of the person infected is?

86
Q

the pulse of infected person is ?

87
Q

what stage enters the body?

A

filariform larvae

88
Q

organ affected during larval migration; wakana disease?

89
Q

adult worm habitat

A

small intestinal

90
Q

recovery of egg where it is onyl important if the infection is heavy

91
Q

recovery of eggs where it provides quantitative diagnosis allowing eggs to be counted

92
Q

eosinophilic anf leukocytic infection

A

pulmonary lesion: wakana disease

93
Q

this diagnosis would increase positive findings several folds, this is recommended for determining whether the stool is to be positive or negative with hookworms

A

Concentration methods

94
Q

culture technique

A

harada mori

95
Q

recommended for identification of filariform larva?

A

culture media/ harada mori

96
Q

prevention of hookworms

A

Avoiding ingestion of raw vegetables

PARASIT (29 decks)

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