viral infections Flashcards

1
Q

which Herpes simplex is predominantly oral and which is predominantly genital?

A

HSV 1 oral

HSV 2 genital

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2
Q

how is HSV transmitted?

A

direct contact

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3
Q

what ganglion will the HSV 1 go to be latent?

A

trigeminal ganglion

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4
Q

True or false?

HSV is neurotropic (meaning nerve loving)

A

true.

in oral leisions HSV 1 goes to trigeminal ganglion to be latent

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5
Q

what is another name for primary herpes?

A

Herpetic Gingivostomatitis

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6
Q

most people acquire their first incidence of primary herpes by what age?

A

at 5 years old

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7
Q

shallow ulcerations with SERPENTINE borders

A

herpetic Ginivostomatis (primary herpes)

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8
Q

Primary herpes can occur on any mucosal surface?

true or false

A

true

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9
Q

red erythematous border with a yellowish surface in the middle is another characteristic along with the serpentine border for what

A

primary herpes (herpetic gingivostomatitis

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10
Q

when can you see intact vesicles in patients with herpes?

A

first 24-48hrs. vesicles rupture after this

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11
Q

what is the lay term for herpes labialis?

A

fever blister

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12
Q

are the blisters in herpetic gingivostomatitis painful?

A

yes

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13
Q

what is the differential diagnosis for primary herpes?

A

trench mouth (ANUG) which has punched out papillae where as primary herpes doesn’t and instead have ulceratoins with serpentine borders

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14
Q

whats the best way to test primary herpes?

A

exfoliative cytology

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15
Q

infected cells show mutinucleation and balooning degeneration of nuclei which is called viral cytopathic effect
and these cells are called Tzanck cells
what virus show this in biopsy?

A

primary herpes

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16
Q

what is the med for primary herpes?

A

acyclovir or valacylovir

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17
Q

when does the antiviral treatment work best for primary herpes?

A

if you catch the leision within the first 2-3 cays

18
Q

what is the symptomatic care for primary herpes?

A

popsicles can be soothing for pediatric patients.

topical anesthetics so patient can eat and drink - important to avoid dehydration

19
Q

what are the two forms of recurrent herpes?

A

recurrent herpes labialis

recurrent intraoral herpes

20
Q

whats another name for hepres labialis?

A

cold sore fever blister

21
Q

what the following clinical symptoms manifestation of?
prodromal itching, tingling, burning, erythema
triggered by UV light exposure or trauma

A

recurrent herpes labialis

22
Q

history of having cold sores right at the commissure,

A

recurrent herpes labialis

23
Q

what is the differential diagnosis with recurrrent herpes labialis?

A

impetigo.

while recurrent herpes labialis lesions recur many times, impetigo only occurs once.

24
Q

is it same medication for primary herpes and recurrent herpes labialis?

A

yes. valacyclovir has the best results

25
Q

which herpes is confined to onlym ucosa bound to periosteum (hard palate and attached gingiva)?

A

recurrent intraoral herpes

26
Q

cervical lymphoadenopathy

A

primary herpes (herpetic gingivostomatitis)

27
Q

how do you differentiate immunosuppressed patient from immunocompetent patients when they are affected with hepres?

A

manifestation of herpes in inmmunosuprressed patients is white raised scalloped borders around the leisions.

28
Q

treatment for immunosuppressed herpes is ?

A

IV acyclovir

29
Q

herpetic whitlow?

A

herpes infection contacted with hands

30
Q

is varicella zoster virus a the human herpes virus?

A

Yes, it is in the family of HHV (human herpes virus) so it has a lot of similarities to HSV.
there are about 8 Human herpes viruses

31
Q

how is variclla (chicken pox) zoster virus spread?

A

direct contact or air borne droplets

32
Q

intensily pruritic vesicles with dew droplets on rose petals type of leisions are clinical manifestatins of what?

A

varicella (chickenpox)

33
Q

clear vesicle sitting on an erythematous base leisions of what?

A

varicella

34
Q

a disease that lays dormant in spinal dorsal ganglion

A

varicella zoster

35
Q

is it same treatment for primary herpes, recurrent herpes and varicella zoster?

A

yes. acyclovir if detected with in 1 day.

36
Q

what is the difference between varicella zoster (chicken pox) and herpes zoster (shingles) in terms of clinical manifestations?

A

shingles are VERY PAINFUL.
shingles lesions stop at MIDLINE.
shingles lesions follow one dermatome that is innervated by single nerve

37
Q

when should you refer shingles to an opthomalogic emergency?

A

when the tip of the nose has leisions. because tip of the nose is innervated by nasociliary branch of CN V and that means CN V is also involved and that means opthalmic branch of CN V is also involved and will effect the eyes.

38
Q

is it same treatment as chicken pox?

A

yes but 5x dosage of chicken pox ( or HSV which is same med for chicken pos and HSV – acyclovir)

39
Q

true or false?
HSV = multiple recurrances
herpes zoster = one recurrence is typical.

A

true.

so if they have multiple outbreaks of herpes zoster. start considering immune problems

40
Q

cossackievirus A or B or echovirus

localized to posterior soft palate/ tonsillar pillar region

A

Herpangina

41
Q

what is CD4 number that is important?

A

200 cells /uL. if the count is less than that. HIV + patient’s blood constitues AIDS

42
Q

what lymph nodes are affected in persistent lymphadenopathy?

A

cervical lymph nodes are frequently affected including posteror cervical nodes.