Schoenwald - STIs Flashcards
5 p’s of the STI medical interview
partners
practices
protection from std’s
past hx std’s
pregnancy intention
3 pre exposure vaccines
hep B
hep A
HPV
who should get the hep B preexposure vaccine
all sexually active patients
who should get the hep A vaccine
MSM
who should get the HPV vaccine
9-26 yo male and female
male condoms are most effective in preventing
mucosal surface contact infxns
what are mucosal surface contact infxns (4)
GC
CT
trichomonas
HIV
what are skin-skin contact infxns
HSV
HPV
syphilis
chancroid
con of non latex condoms
higher breakage/slippage rate
lambskin: larger pores → infxn
are female condoms an effective barrier to viruses
yes
are spermicides effective in preventing STIs
no
what is N-9
vaginal spermicide
t/f: N-9 can be used as a microbicide or lubricant during anal sex
f!
annual STI screenings for at risk MSM (7)
HIV
syphilis
GC
CT
HPV
HBsAG
Hep C Ab
preferred screening test for GC/CT
NAAT
HPV test for MSM
anal pap smear
screening tests for WSW (5)
HPV
HIV
GC
CT
trichomonas and BV
what is PrEP
pre exposure prophylaxis for HIV
what is opt out HIV testing
notify pt that HIV test will be performed unless they decline
all __ women should be tested for HIV
pregnant
what is expedited partner therapy
treating partner of STI pt
what 3 STIs does expedited partner therapy make you think of
syphilis
GC
CT
t/f: in CO, expedited partner therapy is sanctioned
T!
also recommended by CDC and CDPHE
what are STIs of concern
trick question!
they all are
just needed to toss a softball in here :)
STIs involving ulcers
syphilis
genital herpes
also (uncommon):
lymphogranuloma venereum
chancroid
granuloma inguinale
mc cause of ulcers in young women in the US
HSV
syphilis
5 sources of non infectious ulcers
carcinoma
trauma
psoriasis
fixed drug eruption
yeast
STI ulcers are often classified into
painful vs painless
painful STI ulcers (2)
chancroid
genital herpes simplex
2 STI strains of HSV
HSV 1 and 2
painless STI ulcers (3)
syphilis
lymphogranuloma venereum
granuloma inguinale
6 STIs w. drip/discharge
gonorrhea
chlamydia
nongonococcal urethritis/mucopurulent cervicitis
trichomonas vaginitis/urethritis
vulvovaginal candidiasis
HPV 16 and 18
also cervical ca
what do you think when you see: multiple painful vesicles on erythematous base lasting 7-10 days
HSV
mc infectious etiology of genital ulcerations
hsv 1 and 2
mc cause of genital herpes/recurrent herpes
hsv 2
prodrome of HSV involves
tingling/burning 18-36 hr prior to lesions
primary (first presentation) of HSV lesions are associated w.
fever
bilateral LAD
recurrent HSV does not involve
fever
LAD
in terms of detecting HSV, the majority of infxns are __
undiagnosed
in women, HSV symptoms often occur
during menstrual cycle
what is wrong w. serologic HSV testing
high rate of false positives
__ is the gs dx testing for HSV
but it lacks __
Tzank smear
sensitivity
preferred testing for HSV
culture and PCR
positive findings of Tzanc smear
presence of multinucleated giant cells
tx for first clinical episode of HSV
acyclovir 400 mg tid
OR
famciclovir 250 mg tid
OR
valacyclovir 1000 mg bid
7-10 days for all agents
pharm for HSV is most effective w.in __ hr of lesions
72
tx for episodic HSV
acyclovir
famciclovir
valacyclovir
don’t need to know dosing for this one
tx for daily suppression of HSV
acyclovir 400 mg bid
famciclovir 250 mg bid
valacyclovir 500-1,000 mg qd
t/f: suppression tx for HSV reduces frequency of recurrence by 70-80%
t!
tx for first episode of HSV in pregnant pt
acyclovir
there is a high rate of transmission of HSV to neonate if HSV is transmitted to MOC
near delivery
t/f: pregnant pt can deliver vaginally if asymptomatic
t!
painless papule that ulcerates
chancre → syphilis
incidence of syphilis is high and increasing in what 3 pt populations
HIV
MSM
IVDU
what pathogen causes syphilis
treponema pallidum
active syphilis infxn is classified into (3)
primary
secondary
tertiary
primary presentation of syphilis
chancre/ulcer
describe early chancre
macule/papule → erodes
describe late chancre
clean based
painless
indurated
smooth, firm borders
t/f: syphilis chancre is generally asymptomatic
F! it is HIGHLY infectious
syphilis chancre usually resolves in
1-5 weeks
secondary presentation of syphilis (6)
whole body skin rash (including palms/soles)
LAD
mucous patches
condylomata lata
constitutional sx
neuro sx
flesh colored/hypopigmented macerated papules or plaques
condylomata lata
genitals/anus
which sx of secondary syphilis is highly contagious
condylomata lata
secondary syphilis usually resolves w.in
2-10 weeks
3 neuro sx associated w. secondary syphilis
AMS
stroke
meningitis
tertiary presentation of syphilis
gummatous lesions
cardiovascular syphilis
soft, tumor like growth of tissues
gumma
staging of syphilis
early latent
late latent
define early latent syphilis
reactive testing w.in 1 year of infxn
no sx
define late latent syphilis
reactive testing > 1 year after onset of infxn
OR
timing can not be determined
no sx
gs dx test for syphilis
darkfield examination of exudate/tissue
2 types of serologic tests for syphilis
nontreponemal
treponemal
nontreponemal serologic tests for syphilis
RPR (rapid plasma reagin)
VDRL (veneral dz research lab test)
2 treponemal serologic tests for syphilis
fluorescent trepenemal ab (FTA-AB)
T-pallidum passive particle agglutination (TP-PA)
reactivity of non treponemal tests __,
treponemal tests __
fades over time
stay positive
for serologic testing for syphilis you need to do both __
and __ tests
treponemal
nontreponemal
dx test for neurosyphilis
CSF
3 complications of neurosyphilis
eye dz
uveitis
optic neuritis
maternal rf for syphilis
multiple partners
drug use
transactional sex
late entry to prenatal care
no prenatal care
meth/heroin
incarceration
unstable housing/homeless
tx for primary, secondary, and early latent syphilis
benzathine pen g 2.4 million doses IM x 1 dose
6-12 mo f.u for repeat RPR tx
tx for primary, secondary, and early latent syphilis for pt w. PCN allergy
doxycycline 100 mg bid x 14 days
OR
ceftriaxone
tx for late latent syphilis
benzathine pen g 2.4 million units IM 1 dose weekly x 3 weeks
tx for tertiary syphilis
pen g 2.4 million units IM q week x 3 weeks (bicillin LA)
acute febrile rxn w. HA and myalgia that occurs w.in 24 hr of initiation of tx for neurosyphilis
jarisch-herxheimer rxn
jarisch-herxheimer rxn is associated w. __ syphilis
neurosyphilis
jarisch-herxheimer rxn is usually controlled w. __
but can be life threatening
antipyretics
do you typically treat sex partner of syphilis positive pt
yes!
syphilis screening for pregnant pt
1st prenatal visit
AND
at 28 weeks before delivery if high risk
congenital syphilis is associated w. (4)
fetal demise
cleft palates
mental retardation
nerve damage → vision/hearing
t/f: congenital syphilis is rarely seen
f! → 291% increase from 2015-2019
what test should you order for newly diagnosed syphilis pt and vice versa
HIV
what do you think when you see: painful ulcer + tender inguinal adenopathy
chancroid
chancre is __
and a chancroid is __
painless
painful
really, we couldn’t think of a different name for one of these??
what pathogen causes chancroid
haemophilus ducreyi
chancroids are difficult to test and must be cultured w.in __
1 hour
culture for chancroid have __% sensitivity
80
tx for chancroid
azithromycin 1 gm orally
OR
ceftriaxone
OR
cipro
2 other tx considerations for chancroid
re-exam 3-7 days after tx
LAD may need drainage
2 factors that reduce effectiveness of tx for chancroid
uncircumcised
HIV
what determines healing time for chancroid
size of the ulcer
tx for partner of pt w. chancroid
treat partner even if asymptomatic if contact was 10 or fewer days prior to onset
chancroids are a rf for __ transmission
HIV
2 other tx considerations for chancroid
re-exam 3-7 days after tx
LAD may need drainage
what abx for chancroid is contraindicated in pregnancy
cipro
what STI do you think of when you see lymphogranuloma venereum
chlamydia trachomatis
painless papule, vesicle or ulcer PLUS tender regional, unilateral LAD
lymphogranuloma venereum
what do you think when you see genital elephantiasis
chronic lymphogranuloma venereum in females
tx for lymphogranuloma venereum
doxycycline 100 mg bid x 21 days
OR
azithromycin 1 gm po q week x 3 weeks
painless papule that ulcerates, NO lymph node involvement
granuloma inguinale
granuloma inguinale is same-same
donovanosis
what pathogen is associated w. granuloma inguinale
klebsiella (calymmatobacterium) granulomatis
dx for granuloma inguinale (donovanosis)
wound exudate culture
what do you think when you see: donovan bodies (WBC inclusions)
wound exudate findings of granuloma inguinale/donovanosis
tx for granuloma inguinale (donovanosis)
doxycycline 100 mg twice weekly x 3 weeks
OR
azithromycin 1 gm once weekly x 3 weeks
minimum tx duration for granuloma inguinale
3 weeks
what are condyloma acuminatum
genital warts
what STI do you think of when you see condyloma acuminatum
HPV
t/f: h&p exam for genital ulcers is super accurate
f!
evaluation of genital ulcers:
syphilis: __
HSV: __
chancroid: __
syphilis: serologic
HSV: culture/antigen
chancroid: haemophilus ducreyi culture
what other test may be useful in evaluation of genital ulcers
biopsy
moving on to STIs that cause “drips”/ discharge
gonorrhea
nongonococcal urethritis → chlamydia, mycoplasma genitalium
mucopurulent cervicitis
trichomonas vaginitis and urethritis
candidiasis
2nd mc reported STI yearly
gonorrhea
in males, gonorrhea is associated w. (2)
urethritis
dysuria
main presentation of gonorrhea in females
asymptomatic
if gonorrhea is symptomatic in females, what are the symptoms
vaginal discharte
dysuria
labial pain/swelling
abd pain
gs test for gonorrhea
gram stain → gram negative diplococci intracellular
preferred testing for gonorrhea
NAAT
what do you think when you see bartholian’s abscess
gonorrhea
primary site of gonorrhea
endocervical canal → gonorrhea cervicitis
also urethra
sign of disseminated gonorrhea
skin lesions
tx for gonorrhea for pt’s < 150 lb
ceftriaxone 500 mg IM single dose
alternate: gentamicin
tx for gonorrhea for pt’s > 150 lb
ceftriaxone 1 gm
tx for disseminated gonorrhea
ceftriaxone 1 gm IM or IV q 24 hr x 7 days
mc pathogen associated w. nongonococcal urethritis
c. trachomatis
also genital mycoplasmas
2 sx associated w. nongonococcal urethritis
mild dysuria
mucoid d.c
gonorrhea has developed resistance to __
and __
penicillins
tetracyclines
dx for nongonococcal urethritis (3)
urethral smear
urine microscopic
diagnosis on urethral smear for nongonococcal urethritis is __ or more PMNs,
but PMNs are usually > or higher
5
15
2 findings of microscopic eval of nongonococcal urethritis
PMNs 10 or higher
leukocyte esterase (+)
tx for nongonococcal urethritis
doxycycline 100 mg bid x 7 days
OR
azithromycin 1 gm in a single dose
mc reported STI in the US
chlamydia trachomatis
mc presentation of chlamydia
asymptomatic
sx of chlamydia if symptomatic (5)
cervicitis
urethritis
proctitis
lymphgranuloma venereum
PID
2 sx associated w. neonate chlamydia
conjunctivitis
PNA
dx for chlamydia (2)
urine NAAT
cervical/urethral swabs (NA probe)
what do you think when you see Gen-Probe Pace-2
dx test for chlamydia
tx for chlamydia
doxycycline 100 mg bid x 7 days
tx for chlamydia in pregnant pt
azithromycin 1 gm single dose
women < __ yo should be screened for chlamydia
25
what women > 25 yo should be screened for chlamydia
sexually active
risk factors
10-20% of women w. __ develop PID
gonorrhea
minimal dx criteria for PID
uterine adnexal tenderness
cervical motion tenderness
other diagnostic criteria for PID
oral temp > 101
elevated ESR/CRP
cervical CT or GC
WBC/saline microscopy
cervical d.c
sx of PID
endocervical d.c
fever
lower abd pai
3 complications of PID
infertility
ectopic pregnancy
chronic pelvic pain
indications for hospitalization for PID (5)
pregnancy
failure of oral abx or antimicrobials
inability to follow oral regimen
severe illnes → n/v, high fever
tubo-ovarian abscess
inpatient tx for PID
ceftriaxone 1 gm IV q 24 hr
PLUS
doxycycline 100 mg po or IV q 12 hr
PLUS
metronidazole 500 mg po OR IV q 12 hr
oral (outpatient) tx for PID
ceftriaxone 250 mg IM in a single dose
PLUS
doxycycline 100 mg bid x 14 days
PLUS
metronidazole 500 mg bid x 14 days
tx for male sexual partner of PID pt
empiric abx w.in 60 days of onset of sz
epididymitis is chronic if it lasts >
3 months
mc cause of epididymitis in sexually active men < 35 yo (2)
gonorrhea
chlamydia
mc cause of epididymitis in men > 35 yo
enteric organisms →
e.coli
cardinal sx of epididymitis
unilateral testicular pain
tx for epididymitis
ceftriaxone 500 mg IM x 1
PLUS
doxycycline 100 mg bid x 10 days
tx for epididymitis in men who practice insertive anal sex
ceftriaxone 500 mg IM x 1 dose
PLUS
levofloxacin 500 mg po x 10 days
tx for epididymitis if enteric organism is involved
levofloxacin 500 mg po q day x 10 days
prostatitis has the same etiology as
epididymitis
2/2 to infxn
is prostatitis part of the STI tx guidelines
no!
4 sx of prostatitis
dysuria
pain w. erection
f/v
low back pain
dx for prostatitis
UA culture
pre/post prostate exam
tx for prostatitis
same as epididymitis:
ceftriaxone PLUS doxy
but longer duration
mc cause of vaginal d.c worldwide
BV
what pt population is rarely affected by BV
not sexually active
what bacteria makes up 95% of vaginal flora
lactobacillus
known rf for bv (7)
new sex partner
douching
decrease in normal flora
absence of barrier methods
copper IUD
uncircumcised partner
WSE
BV is mc caused by
gardnerella vaginosis
__ criteria is used for BV dx
amsel
amsel criteria
at least 3 of the following:
homogeneous, thin white d.c
wet prep → clue cells
positive whiff test → fishy odor
pH > 4.5
__ tests have higher sensitivity than amsel criteria
NAAT
why do we need to tx BV
risks for:
fetal complications
PID
postsurgical infxn
cervical ca
mucopurulent cervicitis
HIV/other STIs
tx for BV
metronidazole 500 mg bid x 7 days
OR
metronidazole gel 0.75%, 5 g intravaginally x 5 days
OR
clindamycin cream
should pregnant women be treated for BV
yes!
tx for BV in pregnant pt
metronidazole 500 mg po bid x 7 days
same as for non pregnant
is it recommended to tx partner of pt w. BV
no!
only infxn so far w. no rec to tx partner
BV
vulvovaginal candidiasis is mc caused by
candida albicans
d.c associated w. vulvovaginal candidiasis
white
curdy
what do you think when you see: pruritis, vaginal soreness, dyspareunia, external dysuria, and white curdy d.c
vulvovaginal candidiasis (VVC)
dx for vulvovaginal candidiasis
clinical
KOH
culture
is PCR testing used for vulvovaginal candidiasis
no! → not FDA approved
4 indications of uncomplicated VVC
sporadic/infrequent
mild-moderate sx
c albicans
nonimmune compromised
4 indications of complicated VVC
recurrent
severe sx
non c albicans
DM/immunocompromised
recurrent VVC is defined as
3 or more episodes < 1 year
what agents can be used to tx VVC
- azoles
- this will be my sacrificial lamb if she expects us to memorize all of these*
what dx test is useful to confirm dx and identify unusual species (non c. albicans) for recurrent VVC
vaginal culture
initial tx for recurrent VVC:
maintenance tx for VVC:
initial: topical azole OR fluconazole 150 mg x 7-14 days
maintenance: -zoles
tx for non-albicans (complicated)
longer duration of non -azole agent
are there recommendations to tx partner of VVC pt
no!
what VVC tx is recommended in pregnancy
only topical intravaginal x 7 days
what do you think when you see, diffuse, malodorous yellow to green d.c
trichomonas vaginalis
__ infxn is associated w. 1.5 x risk of HIV
and increased risk for PID
trichomonas vaginalis
__ is the gs dx for trichomonas vaginalis,
but __ is more sensitive
wet prep
NAAT
what do you think when you see strawberry cervix
trichomoniasis
tx for trichomoniasis
women:
men:
women: metronidazole 500 po bid x days
men: metronidazole 2 gm orally in a single dose
recs for partner of trichomoniasis pt
partner should be treated
no sexy time until tx is done
oncogenic strains of hpv
16
18
nononcogenic hpv strains
6
11
nononcogenic hpv (6, 11) are associated w.
warts
condyloma acuminata
HPV infxn is detected in 99% of __ cancers
and is also causally associated w.
cervical
other anogenital ca (anal, penile, vulvar, vaginal)
lab markers for HPV
trick question dummy!
there are none
jk, we aren’t dummies
3 possible tx for HPV/warts
podofilox 0.5% solution or gel
OR
imiquimod 5% cream
OR
sinecatechins 15% ointment
what strains of hpv cause respiratory papillomavirus in infants.children
6
11
what agents are contraindicated for hpv in pregnancy
imiquimod
pdophylllin
podoflox
sinecatechins
HPV vaccine is recommended for m and f aged __,
and is FDA approved up to age __
9-26
45
t/f: both gardasil quadravalent and gardasil 9 cover HPV 16 and 18
T!
what do you think when you see: intense itching, contagious, mite
scabies
what parasite is associated w. scabies
sarcoptes scabiei
tx for scabies
permethrin 5% cream to all areas of the body
OR
ivermectin 200 ug/kg po → repeat in 2 weeks
what is persistent scabies
rash and pruritis > 2 weeks
in persistent scabies, you should check the __ of the pt,
tx close contacts __,
and instruct the pt to __
fingernails
empirically
wash all linens, bedding, clothing
crusted scabies is same-same
norweigan scabies
what pt pop is usually affected by crusted scabies
immunodeficient
debilitated
malnourished
organ transplant
hematologic malignancies
t/f: crusted scabies is more contagious than regular scabies
T!
tx for crusted scabies
combo:
topical scabicide PLUS ivermectin
OR
repeated tx w. ivermectin
pruritis or lice/nits on pubic hair
pediculosis pubis
tx for pediculosis pubis
permethrin 1%
pyrethrin w. piperonyl butoxide
applied to affected are and washed off after 10 min
tx for partner of pt w. pediculosis pubis
tx sex partners w.in the last month
vaccine preventable STDs
hep A
hep B
HPV
high risk population for hep A
MSM
IVDU
chronic liver dz
hep B/C infxn
high risk pops for hep B
hx of STI
multiple sex partners
MSM
IVDU
household member/sex contact of Hep B person
hemodialysis
occupational exposure
what 2 HPV vaccines are available
quadrivalent
Gardasil 9
what are the oncogenic/wart associated strains of HPV
6
11
mc bloodborne infxn
hep C
is hep C commonly sexually transmitted
no
hep C pt is commonly co-infected w.
HIV
is a hep C vaccine available
no!
what STIs are associated w. assault/abuse
GC
CT
trichomonas
candida/BV
HIV
HBV
syphilis
recommended empiric tx regimen for adolescent and adult female sexual assault survivors
ceftriaxone 500 mg IM single dose
PLUS
doxycycline 100 mg po bid x 7 days
metronidazole 500 mg po bid x 7 days
recommended empiric regimen for adolescent and adult male sexual assault survivors
ceftriaxone 500 mg IM in a single dose
PLUS
doxycycline 100 mg po bid x 7 days
same as for female minus metronidazole
tx for post HIV exposure prophylaxis
HIV PEP
case by case basis
referral to specialty care
HIV PEP is only recommended w.in < __ hours of substantial exposure risk
< 72 hr
is HIV PEP recommended for negligible exposure risk
no!