Chapter 16 Infections of Lower Female Reproductive Tract Flashcards
a clean voided midstream urine sample can be sent for UA and microscopic examination. what is indicative of UTI?
hematuria, leukocytes, leukocyte esterase, or nitrates
approx 80-85% utis caused by
escherichia coli
if UC negative, pts with symptoms consistent with urethritis, should be tested for
chalmydia trachomatis and nisseria gonorrhoeae using a midstream collection. another etiology of urethritis is herpes simplex virus.
treatment of UTI
trimethoprim-sulfamethoxazole
nitrofurantoin
fluoroquinolone for 3-7days.
syphilis is a chronic systemic infection caused by spirochete
treponema pallidum
2ndary syphilis is a systemic disease occurs as T.pallidum disseminates and begins around 1-3 months after primary stage resolves. classically
maculopapular rash may appear on palms of hands or soles of feet.
tertiary syphillis (rare today) characterized by
granulomas of skin and bones, neurosyphilis with meningovascular dx, paresis,
screening for T pallidum
performed with nontreponemal anticardiolipin antibodies. 2 types of nontreponemal serologic tests for syphillis:
- veneral disease research lab (VDRL)
- rapid plasma reagin (RPR)
positive result must be confirmed with specific treponemal antibody studies such as
- fluorescent treponemal antibody absorption (FTA)
2. and treponema pallidum particle agglutination assay (TPPA).
false positive results in < ___.
<1%
drug of choice for treatment of syphilis
penicillin.
primary, secondary or early latent syphilis can be treated with
BENZATHINE PENICILLIN G 2.4MILLION UNITS IM one time.
for late latent of unknown duration syphilis, treatment consists of
penicillin g2.4 million units IM weekly for 3 weeks.
treatment success verified by
following rpr or vdrl titers at 6, 12,24months.
titers should decrease fourfold by 6 months and become nonreactive by 12-24 months after completion of treatment.
acute febrile reaction accompanied by fever, chills, headache, myalgia, malaise, pharyngitis, rash or other symptoms occur within first 24 hrs
JARISCH HERXHEIMER RXN.
jarisch herxheimer rxn is a transient inflammatory reaction, which is related to
treatment of syphilis and can be seen with other treatment of spirochetes as well such as Lyme disease.
majority of genital herpes lesions caused by
hsv2.
many new cases of genital hsv are now attributable to
HSV1, as much as 80%
how is hsv transmitted?
direct contact with incubation period of 2-10 days after exposure.
symptoms of primary hsv infection
malaise, myalgias, nausea, diarrea and vefer. vulvar burning and pruritus preced the multiple vesicles that appear next and usually remain intact for 24-36 hrs before evolving into painful genital ulcers.
after initial outbreak, recurrent episodes can occur as frequently as
1-6 times / year. recurrence is more frequent in HSV2
primary infection treatment of HSV:
acyclovir 200mg 5 times / day acyclovir 400mg 3 times/ day famciclovir 250mg 3 times/ day valacyclovir 1g 2 times / day for 7-10 days
recurrent infections:
oral acyclovir 400mg 3 times/ day
800mg 2 times/ day
x5 days
90% of genital warts are caused by
serotypes 6 and 11
cervical cancer is more associated with
serotypes 16, 18, 31.
treatment of warts
local excision, cryotherapy, topical trichloroacetic acid, topical 25% podophyllin and efudex5%.
for motivated pts with uncomplicated condyloma, 2 options
- imiquimod (ALDARA)
2. podofilox (CONDYLOX)
IMIQUIMOD aldara use:
3 times / week washed off after 6-10hrs.
PODOFILOX
2 times/ DAY x 3 days LEFT IN PLACE FOLLOWED BY NO TREATMENT FOR 4 DAYS. repeated up to 4 cycles.
recurrence rate
20% regardless of treatment modality.
vaginal culture should be obtained to idetify nonalbicans species such as
C. glabrata (which are less responsive to azole therapy)
recurrent cases / complicated cases:
longer duration of therapy ex. 7-14 days of topical regimen or
2-3 doses of fluconazole oral therapy every 72 hrs.
firstline maintenance therapy for recurrent cases:
oral fluconazole weekly for 6 months.
nonalbicans candidiasis: treatment with
600mg vaginal boric acid capsules daily for 14 days.
symptoms of trichomonas vaginalis worse immediately after menses because of
transient increase in vaginal pH at the time.
microscopy for trich
60-70%
treatment for T. vaginalis is
metronidazole 2g orally or
tinidazole 2 g orally .
in cases of metronidazole single treatment failure, metronidazole 500mg bid x 7 days is prescribed. sexual partners should be treated.