STIs Flashcards

1
Q

is the vaginal pH higher or lower in adolescence?

A

higher pH

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2
Q

why is vaginal pH higher in adolescence?

A

fewer lactobacilli

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3
Q

what is the good guy in normal flora of vagina?

A

lactobacillius `

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4
Q

where is the squamocolumnar jxn in adult females?

A

within the cervix canal

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5
Q

where is the squamocolumnar jxn in adolescent females?

A

at entrance to cervix

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6
Q

which location of the squamocolumnar jxn is worse for getting diseasE?

A

adolescent

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7
Q

name the four bacteria that are STIs

A

neisseria gono
chalmydia
treponema pallidum
haemophilus ducreyi

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8
Q

what is the protozoa that can cause STI?

A

trichomonas vaginalis

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9
Q

name the viruses that can cause STI?

A
HIV
HPV
HSV 1/2
HBV
CMV
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10
Q

what three bugs cause genital ulcers?

A

HSV12
syphilus
haemophilus ducreyi

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11
Q

what three bugs cause mucosal inflammation?

A

gono
chlamydia
trichomonas vaginalis

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12
Q

what three issues can neonates have if infected from vaginal flora during birth?

A

conjunctivitis
respiratory infxn
genital infxn

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13
Q

what is often associated with STIs and is sevre issue?

A

PID

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14
Q

what class of bacteria is treponmal pallidum?

A

spirochetes

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15
Q

what is descriptive features of n gono?

A

gram negative diplococci

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16
Q

what is presentation of n gono in men?

A

urethral infection…urethritis

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17
Q

what is presenting symptom of n gono in men?

A

dysuria…with urethral discharge sometimes

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18
Q

where will the n gono species be found in gram stain?

A

intracellular

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19
Q

what is rx for gonococcal conjunctivitis of newborns?

A

silver nitrate and antibiotic ointment prophylactically

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20
Q

what is a random thing n gono can cause?

A

DGI..disseminated gonococcal infection

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21
Q

is neiserria gono encapsulated?

A

NO

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22
Q

is neisseria meningitis encapsulated?

A

YES

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23
Q

what is N gono really good at doing?

A

horizontal DNA transmission…take up DNA from other organisms

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24
Q

what does N gono have a lot of that makes it difficult to treat?

A

antigenic variation

antibiotic resistance

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25
what is most effective abx for n gono?
ceftriaxone...3rd gen cephalosporins
26
what else other than ceftriaxone do you give in rx of n gono? why?
azithromycin to cover chlamydia
27
what cells do chlamydia infect?
columnar epithelial cells
28
what are the three different strains of chlamydia trachomatis?
ocular genital LGV
29
what is LGV chlamydia trachomatis?
lymphogranuloma
30
what serovars are the ocular chlamydia trachomatis?
A-C
31
what happens with ocular chlamydia trachomatis?
inflammation of the eye
32
what serovars are genital strains of chlamydia trachomatis?
D-K
33
what issues arise with genital chlamydia trachomatis?
``` urethritis cervicitis PID conjunctivitis pneumonia ```
34
what does rectal chlamydia trachomatis infection cause?
proctitis in men
35
is secretion of chlamydia more or less purulent than n gono?
a lot less..can almost look like clear discharge
36
what are the two forms of chlamydia trachomatis in its life cycle? which is infectious?
elementary body and reticulate body...elementary body is infectiou s
37
what are the two abx for chlamydia trachomatis?
azithromycin and doxycycline
38
which bacteria can you not culture that is an STI?
syphillis
39
what three STIs is serology useful for?
syphilis HIV and HSV
40
what are NAATs?
nucleic acid amplification tests
41
what do we use NAATs for in STIs?
many many of them
42
what are the four stages of syphilis in order
primary infxn secondary infxn latent tertiary infxn
43
what is characteristic of primary syphilis?
genital ulcers
44
what is characteristic of secondary syphilis?r
reappearance of lesions and especially on hands and feet
45
what is characteristic of tertiary syphilis?
can occur anywhere...when you get neurosyphilis
46
is a syphilis chancre painful?
NO painless
47
how soon after primary syphilis chancre disappears do you get secondary syphilis?
3-6 weeks
48
what are the systemic symptoms of secondary syphilis?
``` malaise myalgias fever HA lymphadenopathy sore throat ```
49
how can you diagnose latent syphilis?
blood test only
50
what are the three findings of congenital syphilis?
bone eye ear and brain damage
51
what is the classic congenital syphilis finding?
hutchinsons incisors
52
what is bug ofsyphilis?
treponema pallidum
53
what does treponema pallidum not have?
LPS
54
what are the two ab types that develop in syphilis?
non treponemal and treponemal
55
which of the abs for syphilis is specific and which is sensitive?
non treponema is sensitive and treponemal are specific
56
describe what happens with treponemal abs over time?
they increase and stay elevated for life
57
describe what happens with non- treponemal abs over time?
they elevated at first and then become negative after treatment
58
what abs do you follow to see if syphilis rx is working?
non treponemal abs
59
what are the non treponemal tests for syphilis?
RPR and VDRL
60
what are the treponemal tests for syphilis?
TPPA and Tp ELISA
61
what syphilis test is done first?
a non treponemal then followed by a treponemal if positive
62
what is therapy for syphilis?
penicillin
63
where does trichomoniasis vaginalis often infect?
vagina urethra and endocervix
64
what are symptoms of trichomoniasis vaginalis?
vaginal discharge, itching, odor, dysuria
65
what does vaginal discharge of trichomoniasis vaginalis look like?
frothy
66
what is cervical finding in trichomoniasis vaginalis?
strawberry cervix
67
what class of bugs is trichomoniasis vaginalis?
is a protozoan
68
how do you diagnose trichomoniasis vaginalis?
wet mount microscopy, culture or rapid antigen detection and NAATs
69
what is issue with wet mount microscopy?
must be done 15 minutes after collection
70
what is rx for trichomoniasis vaginalis?
metronidazole and tinidazole
71
what is issue in bacterial vaginosis?
disturbance of local flora in vagina
72
what are risk factors for bacterial vaginosis?
new sex partner many partners douching
73
what is shape of lactobacillus?
gram positive rods
74
what will you likely not see in bacterial vaginosis?
absence of lactobacilli
75
what cells will you see in bacterial vaginosis that is a sign?
clue cells
76
what are clue cells?
epithelial cells studded with bacteria in bacterial vaginosis
77
what bugs replace lactobacillus in bacterial vaginosis?
gardnerella vaginalis and atopobium vaginae
78
what are symptms of bacterial vaginosis?
discharge of vagina and stanky
79
what are the four clinical signs of bacterial vaginosis?
clue cells high vaginal ph discharge that smoothly coats vaginal walls positive whiff test
80
how do you do whiff test?
drop some KOH on the vaginal fluid and you get a stank
81
what is rx for BV?
metronidazole and clindamycin
82
what is classic finding of candida?
germ tube formation
83
what are two complaints common for candida infxn downstairs?
itching and irritation
84
can you have discharge with candidiasis of vagina?
not normally but if you do it is thick and adherent