Sexually Transmitted Infections Flashcards
Lymphogranuloma venereum
Chlamydia trachomatis
PAINLESS ulcers
Lymph nodes tender, suppurative
Herpes
Multiple painful coalescing vesicles
Lymph nodes firm and tender
Chancroid
Haemophilus ducreyi
Often painful, yellow-gray base with red margins, excavated, purulent and hemorrhagic secretions
Lymph nodes tender and suppurative
Syphilis
Rarely painful, firm induration
Lymph nodes firm and tender
Diagnosed by dark-field immunofluorescence
Granuloma inguinale
Calymmato bacterium granulomatis
Rarely painful, rolled painful margins with firm induration
Diagnosed by giemsa staining
Most common causes of vaginal symptoms
Candidiasis
Bacterial vaginosis
Trichomonas
Normal vaginal ph
<4.5
Most common nonviral STI
Trichomonas
Amsel criteria
Must have 3 of 4 1. homogenous thin white discharge that coats vaginal walls 2. >20% clue cells 3, vaginal ph > 4.5 4. Positive KOH whiff test
Treatment of bacterial vaginosis
Metronidazole PO 500mg bidx7d
Vaginal metronidazole 0.75% x5d
Vaginal clindamycin 2% x7d
Risk factors for recurrent BV
Douching Frequent sexual activity History of bv Persistent pathogenic bacteria Failure to reestablish lactobacillus predominant vaginal flora
Definition of recurrent bv
Three separate documented episodes in 1 year
Treat with 16 weeks suppressive therapy after acute treatment
Preferred diagnostic test for Trichomonas
NAAT
DNA probe is less specific
Treatment for trichomonas
Metronidazole 500mg PO bidx7d
Diagnostic criteria for candidiasis
Must have 1 of 2
- Hyphae, pseudohyphae, spores on wet mount
- Vaginal fungal culture or positive commercial diagnostic test
