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Gyn STIs
Sexually Transmitted Infections
| Question | Answer |
|---|---|
| Lifetime risk of acquiring an STD | 1 in 4 |
| Risk factors for STIs | New sex partner in last 60 days, multiple partners, unmarried, LSES, Past Hx of STI, Substance abuse, Early onset of sexual activity (before 16), lack of barrier contraception use |
| High risk populations | ages 15-24, Geographic (SouthEast urban and rural), AA, Commercial sex workers, incarcerated or in juvenile hall, meeting partners on the internet |
| Complications of STIs | upper genital tract infections, infertility, cervical cancer, enhanced transmission and acquisition of HIV |
| STD examination in women | Inguinal adenopathy, general skin exam including palms and soles, genital lesions (skin and mucosal), vaginal discharge, cervical mucopus/friability/pain, adnexal mass/tenderness, establish pregnancy status |
| Same day STI lab tests | gram stain, wet mount, RPR (rapid plasma reagin), Darkfield Microscopy |
| Next day or Longer STI lab tests | Cultures (GC, HSV), PCR (LCX): GC, chlamydia, others, MHA-TP (microhemagglutination assay for Treponema pallidum): Syphilis |
| Genital ulcers in the US | Herpes Simplex Virus (HSV), Primary Syphilis, Chancroid |
| What to look for in an ulcer exam | location and number, pain friability, induration, depth/diameter/base (shiny, purulent), borders (irregular or smooth), Adenopathy (bilateral, size, tender, consistency) |
| Extremely painful cluster of shallow vesicles with clear exudate on the shaft of the penis suggests | Primary Herpes |
| Nonpainful lesion that will heal without any scarring at all. no satellite lesions and is a deep ulcer. | Primary Syphilis-chancre. |
| Chancroid ulcer appearance | looks kind of wet and open |
| bacteria causing chancroid | H. ducreyi. Long chain of rods that stain blue/purple with gram stain |
| LGV | Lymphogranuloma venereum |
| Etiology of LGV | Chlamydia trachomatis. M>F, rare in US, more common in anal receptive patients, presents as rectal ulceration or strictures with inguinal LAD |
| Diagnostic test for Lymphogranuloma venereum | Complement fixation test for C trachomatis serotypes L1, L2, L3 (L types are different than normal chlamydia) |
| Treatment for LGV | Abx, stricture dilation, surgery -->will scar |
| Donovan bodies on stained direct smear or biopsy of ulcer evaluates for | Granuloma inguinale |
| Chronic or recurrent ulcerative vulvitis caused by Calymmatobacterium granulomatis is | Granuloma inguinale |
| Tx for granuloma inguinale | ABX |
| Which HPV strains are the major cause of cancer? | 16 and 18 |
| Which HPV strains cause genital conydloma? | 6 and 11 |
| Appearance of Condylomata | Papillomatous, white, cauliflower-like |
| 70-90% of __ infection will clear within 1 year | HPV; patient will remain immune from that strain for about 3 years. Reinfection with the same strain is possible after that |
| Management of high risk HPV types | colonoscopy with biopsy |
| Gardasil dosing | 3 vaccine series (0,2 & 6 months), offer to females 9-26 yo (full benefit if given prior to onset of sexual activity) even if hx of HPV |
| Chancres (painless sores, raised oval ulcer with indurated edges) are found in which type of Syphilis? | Primary |
| Which forms of Syphilis are contagious? | Primary, Secondary |
| Bilaterally symmetrical papulosquamous rash (check palms & soles!), condyloma, alopecia, denuded tongue, lymphadenopathy (firm, rubbery, non-tender) are symptoms of what type of Syphilis? | Secondary Syphilis. Sx usually have onset 6wks-6 months post infection and then last a few a weeks. Nonspecific sx include: fever, malaise, HA, arthralgias |
| lymphadenopathy is found in which forms of syphilis? | Primary, Secondary |
| Latent Syphilis is characterized by lack of clinical signs and | Usually you have a reactive serology (but CSF negative) (in the first year post secondary infection it is considered early latent; after that year, it is called late latent which may last 20 years to life) |
| Tertiary Syphilis | rarely infectious, CSF+, Multi-organ involvement, disease over 4 years duration, cardiovascular, late benign (gumma), neurosyphilis |
| serpiginous gummata of forearm and ulcerating gumma is suggestive of | late syphilis (tertiary?) |
| Spirochetes in the neural tissue is suggestive of | neurosyphilis |
| Titer >1:8 usually is indicative of what type of Syphilis? | Early |
| Diagnosing Primary Syphilis | Darkfield microscopy of chancre |
| Diagnosiing Syphilis | Serology: Nontreponemal (VDRL, RPR) confirmed by treponemal tests (FTA-ABS (fluorescent treponemal antibody absorption) and MHA-TP). Treponemal tests are lifetime positive. CSF examination recommended in sx, late-latenet, HIV co-infxn |
| Epidemiology of HSV2 | high (25% in US), horizontal transmission rate: 9.7% over year, F>M |
| HSV transmission | Direct contact, autoinnoculation, herpetic whitlow, asymptomactic carrier, perinatal (vertical transmission) |
| Primary HSV | May be asx, primary infxn: 2-7 day course, systemic sx possible, local sx, painful, first outbreak is the worst! |
| HSV recurrences | milder, shorter, prodromal phase, non-systemic, precipitants (sun, wind, trauma, fever, menses, stress) |
| The lesion with the greatest diagnostic testing accuracy for HSV is | 93% for vesicles, 72% for ulcers. 27% for crusted lesions. H & P is often enough to dx, PCR is over 95% sensitive and specific in any stage. Serology is controversial |
| Main management of HSV | Patient education: abstinence while lesions are present, condoms for all sexual exposures, neonatal risk, partner education, antivirals may reduce transmission |
| Which STI is an intracellular obligate bacteria? | Chlamydia Trachomatis. Highest prevalence in 15-24 yo females, not related to SES |
| #1 STI | HPV (but not reported to the health department). Chlamydia is the #1 reported STI |
| Who to test for Chlamydia | Women<26yo annually, new sex partner in last 60 days, >2 sex partners in past year. Based on exam: cervical mucopus, friability, ectopy |
| Clinical course of Chlamydia | Incubation is 7-10 days, Sx may be delayed up to 30 days, may be asx in both men and women, 15-305 concurrence with Gonorrhea |
| Clinical course of Chlamydia in Women | Asx or minor sx in majority of women (vaginal discharge, dysuria), muculopurulent cervicitis on clinical exam, acute urethral syndrome, pelvic pain, lower abdominal pain |
| Chlamydia complications in a female | PID (40% if untreated), infertility (20% of F with PID), Ectopic pregnancy, Perihepatitis (Fitz-Hugh-Curtis syndrome), Perinatal transmission (66%): Ophthalmia neonatorum - very serious, emergent tx. Pneumonia |
| Chlamydia complications in a male | relatively uncommon, epididymitis, urethritis, may cause pain, fever, and rarely sterility |
| Diagnosing Chlamydia | Enzyme Immune Assay (EIA) 75% (cheap), PCR (LCX) 95%, UA may increase detection, esp in men, CDC recommends re-testing for chlamydia 3 months post tx |
| Gram negative intracellular diplococcus STI | Neisseria gonorrhea |
| 2nd most commonly REPORTED infectious disease in the US | Gonorrhea. Underdiagnosed and undertreated |
| GC sx in women | vaginal discharge, abdominal pain (50% asx) |
| GC sx in men | purulent discharge/dysuria (only 3% asx) Milk the shaft of the penis for greenish, yellow discharge |
| GC infection increases the risk of contracting __ if exposed | HIV; risk is 3-5x greater |
| This is a complication of GC that is has higher likelihood in 15-19yo F and 20-25yo males | Dissemination. AA>W. Septic arthritis, vertical transmission, ophthalmia neonatorum |
| GC lab diagnosis | Men: urethral gram stain 95% sensitive compared to culture. Women: culture is 85% sensitive. PCR IS OPTIMAL |
| initial Rapid testing for HIV | EIA. Confirm with supplemental. Test during window period (early infxn) with HIV RNA |
| Acute HIV sx | fever, mono-like illness, diarrhea |
| For which sexually transmitted Hepatitis types is there a vaccination? | A and B |
| When treating for gonorrhea, always treat for ____ as well | chlamydia; remember that quinolone resistance is a problem |
| STI patient education | Patient needs to wait 7 days post completion of tx to have sex again (no, cannot have sex wiht a condom before then) |