STIs Flashcards
clinical presentation
- vaginal discharge
- odor
- pruritus
- discomfort
vaginitis
what are the 3 most common causative agents of vaginitis
- vulvovaginal candidiasis
- bacterial vaginosis
- trichomoniasis
is vulvovaginal candidiasis a STI
no, it is a common yeast infection
what is the most common causative agent of vulvovaginal candidiasis
candida albicans
clinical presentation
- vulvar pruritus, external dysuria, burning, dyspareunia
- thick, curd-like vaginal discharge
- normal vaginal pH (4-4.5)
vulvovaginal candidiasis
what are the risk factors for getting vulvovaginal candidiasis
- abx
- immunosuppressed
- pregnant
- oral contraceptives
- steroids
- wearing tight clothes
how is vulvovaginal candidiasis diagnosed
- wet prep (saline and 10% KOH)
- visualize budding yeasts and hyphae
- vaginal cultures for Candida
what characteristics classifies a vulvovaginal candidiasis infection as uncomplicated
- symptom severity
- frequency
- organism
- host
- mild or moderate symptom severity
- sporadic frequency, < or = 3 times per year
- caused by candida albicans
- healthy, non pregnant women
what characteristics classifies a vulvovaginal candidiasis infection as complicated
- symptom severity
- frequency
- organism
- host
- severe
- recurrent, > or = 4 x per year
- nonalbicans species
- pregnant, uncontrolled DM, immunosuppressed
tx for uncomplicated vulvovaginal candidiasis
- topical azole 1-3 days
- e.g. clotrimazole
tx for complicated vulvovaginal candidiasis
- topical azole x 7-14 d or
- oral fluconazole
- if nonalbicans, avoid fluconazole
does male parterner need treatment if female partner is diagnosed with vulvovaginal candidiasis?
- No, unless he has balanitis
Is bacterial vaginosis an STI
- No
what is the most common cause of vaginal discharge in women of childbearing age
- bacterial vaginosis
- results from disruption of usual, healthy vaginal microflora (lactobacillus sp.)
causative agent of bacterial vaginosis
- usually polymicrobial
- often associated with Gardnerella vaginalis
clinical presentation
- thin white or gray discharge
- strong fishy odor
bacterial vaginosis
name risk factors for bacterial vaginosis
- new or multiple sex partners
- douching
- can affect women that are not sexually active
how is bacterial vaginosis diagnosed
-
Amsel’s criteria- presence of at least 3
- think white homogenous discharge
- clue cells on microscopy
- vaginal fluid pH > 4.5
- fish odor of vaginal discharge before or after addition of 10% KOH
tx of bacterial vaginosis
- treat symptomatic
- metronidazole PO or metronidazole gel or clindamycin cream
does male partner need tx if female partner diagnosed with bacterial vaginosis
No
patients should not take when taking metronidazole
- ETOH
- cause Disulfiram-like reaction
complications of having bacterial vaginosis
- increased risk of acquiring HIV, HSV-2, gonorrhea, and chlamydia
- should be tested
- increased risk of PID
is Trichomoniasis an STI
- yes
- most prevalent nonviral STI in the U.S.
causative organism of Trichomoniasis
trichomonas vaginalis
- single celled protozoan parasite
most patients (70-85%) infected with Trichomoniasis have what symptoms
- minimal or no symptoms
clinical presentation
- vaginal pH > 4.5
- vulvar irritation
- malodorous, frothy, yellow-green vaginal discharge
- may see petechiae on vagina and cervix (“strawberry cervix”)
Trichomoniasis
how do symptomatic men present with Trichomoniasis
- urethritis
- clear or mucopurulent urethral discharge and/or dysuria
how is Trichomoniasis diagnosed
- wet mount: motile organisms
- nucleic acid amplification tests (NAATs)
- culture
how is Trichomoniasis treated
metronidazole
- treat patient and partners
pregnancy considerations for Trichomoniasis
- increased risk of premature rupture of membranes, preterm delivery, low birth
- tx recommended for pt’s with symptoms
- lactating women should withhold breastfeeding while taking metronidazole
Trichomoniasis retesting protocol
- recommended for all sexually active women within 3 months following initial tx regardless of whether they believe their sex partners were treated
what pt population most commonly affected with chlamydia
< or = 24 yo
majority of pts affected with chlamydia have what symptoms
asymptomatic