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Sexually Transmitted Diseases: Sores and Drips
Clinical Medicine Module 3
122
Medical
Graduate
06/08/2009

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Term
What percent of their lives do Americans now spend as singles?
Definition
50%
Term
26% of girls in what age group have at least one STD?
Definition
14-19
Term
With only one lifetime sexual sexual partner, what percent of people have an STD?
Definition
20%
Term
With 3 or more sexual partners, what percent of people have STD's?
Definition
50%
Term
What percentage of teenage women are infected with at least one of the STD's?
Definition
3.2 million teenage women
Term
What percent of all syphilis cases appear to be transmitted by oral sex?
Definition
14%
Term
What percent of orally transmitted syphilis is transmitted among MSM?
Definition
20%
Term
Of the following genital ulcers, which are painful and which are painless?
Chancroid, Genital herpes simplex, and Syphilis
Definition
Painful: Chancroid, Genital herpes simples. Painless: Syphilis
Term
What effort was started by the CDC in 1999?
Definition
National syphilis elimination effort started by CDC in 1999
Term
How did the rates of syphilis change in 2000?
Definition
Syphilis cases decreased for 10 straight years then increased beginning in 2000.
Term
The ongoing national increase in syphilis is primarily in which population?
Definition
MSM
Term
Syphilis case increased from 7,177 in 2003 to 7,980 in 2004 and a 14% increase from 2004 and 2006. 64% of cases where in which population?
Definition
MSM
Term
Virginia is ranked 21 for syphilis cases in the 50 states. What percentage of syphilis in VA is in the eastern region?
Definition
35% of cases
Term
What percent increase in the first quarter of 2007 over 2006?
Definition
39%
Term
What is the late appearance of a syphilitic chancre?
Definition
clean based, painless, indurated ulcer with smooth firm borders
Term
In what percent of pts is a syphilitic chancre unnoticed?
Definition
15-30% (especially vaginal and rectal lesions)
Term
How does the syphilitic chancre progress untreated?
Definition
Resolves in 1-5 weeks w/o tx
Term
What percent of pts exposed to primary or secondary syphilis become infected?
Definition
HIGHLY INFECTIOUS: 50-70% exposed to primary or secondary syphilis become infected
Term
How valuable is a darkfield exam for evaluating genital ulcers?
Definition
Darkfield is quick and accurate, but not often available
Term
How sensitive is the serologic test for syphilis?
Definition
30% negative at presentation
Term
For what STD is a culture/Ag test used?
Definition
Herpes simplex
Term
What organism should be cultured in settings where chancroid is prevalent?
Definition
Haemophilus ducreyi
Term
What represents a hematogenous dissemination of spirochetes?
Definition
Secondary syphilis
Term
How long after the chancre appears does secondary syphilis present?
Definition
2-8 weeks after the chancre appears
Term
What are the clinical findings of secondary syphilis?
Definition
Rash-whole body (includes palms/soles), hyperkeratosis is typical, patchy alopecia, loss of eyebrows. Mucous patches. Condyomata lata- HIGHLY INFECTIOUS. Constitutional symptoms.
Term
In how long do s/s resolve in secondary syphilis without tx?
Definition
2-10 weeks
Term
What serologic test for syphilis is non-treponemal, with screening and monitoring response to therapy, and is titered?
Definition
VDRL, RPR
Term
What serologic tests for syphilis is treponemal confirmatory, with no titer?
Definition
FTA-ABS, MHA-TP
Term
What percent of pts with primary, secondary, and late syphilis have a true positive with VDR?
Definition
Primary: 70%. Secondary: 99%. Late: 1%
Term
What percent of primary, secondary, and late syphilis cases show true positives with RPR?
Definition
Primary: 80%. Secondary: 99%. Late: 0%
Term
What percent of primary, secondary, and late syphilis cases show true positives with FTA-ABS?
Definition
Primary: 85%. Secondary: 100%. Late: 98%.
Term
What percent of primary, secondary, and late syphilis cases show true positives with MHA-TP?
Definition
Primary: 65%. Secondary: 100%. Late: 95%
Term
What is the recommended regimen for syphilis?
Definition
Benzathine Penicillin G, 2.4 million units IM once
Term
Which product is preferable for tx of syphilis: Bicillin L-A or Bicillin C-R?
Definition
Make sure product is Bicillin L-A NOT Bicillin C-R, a mix of procaine and benzathine
Term
When is doxycycline, ceftriaxone, and azythromycin indicated for syphilis?
Definition
Penicilin Allergy *Use in HIV-infection has not been studied
Term
What is a Jarisch-Herxheimer Rxn and when does it occur?
Definition
Systemic rxn occuring 1-2 hrs after tx: Abrupt onset of fever, chills, myalgias, HA, flushing, hyperventilation, and mild hypotension
Term
In what percentage of secondary syphilis pts will a Jarisch-Herxheimer rxn occur?
Definition
May occur in 70-90% of persons with secondary syphilis but 10-25% with any stage
Term
How is response to primary/secondary syphilis tx monitored?
Definition
Re-examine clinically and serologically (RPR) at 6 and 12 mos (15% will not decrease titer 2-fold after 1 yr)
Term
When should *tx failure* be considered with primary/secondary syphilis?
Definition
if s/s persist or sustained *4-fold increase* in nontreponemal test (RPR)
Term
What should be done in tx failure to primary/secondary syphilis?
Definition
Tx failure: HIV test, CSF analysis; administer benzathine pcn weekly x 3 wks
Term
When is syphilis designated *early latent*?
Definition
documented infection w/in 1 yr
Term
When is syphilis designated *late latent*?
Definition
seropositive w/o other evience of disease
Term
How is latent syphilis designated tertiary?
Definition
clinical evaluation for tertiary disease (aoritis, gumma, iritis)
Term
When is CSF *analysis* for syphilis indicated?
Definition
if neurologic or opthalmic s/s, active tertiary disease, therapeutic failure, HIV infection
Term
What do some experts recommend in pts with nontreponemal titer of equal or greater than 1:32?
Definition
CSF exam
Term
What is the recommended regimen for latent syphilis?
Definition
Benzathine penicillin G 2.4 million units IM at one week intervals x 3 doses
Term
Pharmacologic considerations suggest an interval of how many days between benzathine pen doses may be acceptable for those who miss a dose before restarting tx course in non-pregnant pts?
Definition
10-14 days
Term
How should latent syphilis be tx in pts with penicillin allergies?
Definition
doxycycline 100 mg po bid; tetracycline 500 mg po qid
Term
What is the duration of doxycycline and tetracycline therapy for latent syphilis?
Definition
duration of therapy 28 days; close clinical and serologic follow-up; data to support alternatives to penicillin are limited
Term
Regarding latent syphilis and HIV, When is CSF exam before tx indicated?
Definition
if CD4<350 or RPR > 1:32
Term
What percent of pts with genital herpes do not know they are infected?
Definition
90%
Term
Are most herpes cases clinical or subclinical?
Definition
most are subclinical
Term
From what type of infection is genital herpes primarily transmitted?
Definition
*subclinical* infection
Term
What are complications of genital herpes?
Definition
neonatal transmission, enhanced HIV transmission, psychosocial issues
Term
What is the progression of genital herpes simplex?
Definition
vesicles to painful ulcerations to crusting
Term
What percent of genital herpes pts have viral shedding w/o symptoms?
Definition
4%
Term
What percent of genital herpes pts have a history of prior symptoms?
Definition
14%
Term
HSV Serologic Tests: Type-Specific. What tests are now available for HSV-specific type one and type 2?
Definition
*glycoprotein G2* and *glycoprotein G1*
Term
What are the tx options for the 1st clinical episode of genital herpes and for 6 or more recurrences per year?
Definition
acyclovir 400 mg tid; gamciclyovir 250 mg tid; valacyclovir 500-1000mg bid. Duration of therapy: 7-10 days. If 6 or more recurerences per year, daily suppression.
Term
What is the risk of transmission to the neonate among women who acquire HSV near delivery?
Definition
30-50%
Term
How should genital herpes pts be educated about the illness?
Definition
natural hx of infection, recurrences, asymptomatic shedding, transmission risk
Term
How should genital herpes pts be educated about therapy?
Definition
Individualize use of episodic or suppressive therapy (6 or more recurrences/yr)
Term
How should genital herpes pts be educated about sex?
Definition
Abstain from sexual activity when lesions or prodromal symptoms present
Term
How should genital herpes pts be educated about pregnancy?
Definition
risk of neonatal infection
Term
The proportion of gonococcal infections caused by what organisms is increasing?
Definition
resistant organisms
Term
What class of antibiotics is no longer recommended as tx for MSM with gonorrhea?
Definition
quinolones
Term
What is the greatest disparity of all STD's?
Definition
gonorrhea, VA: black male is 39x and a black female 17x more likely than a white to be dx with gonorrhea
Term
What % of cases of gonorrhea in VA are in the eastern region?
Definition
50%
Term
What are the sx of gonorrhea urethritis in a male?
Definition
dysuria and urethral discharge (5% asymptomatic)
Term
How is gonorrheal urethritis dx in a male?
Definition
gram stain urethral smear (+) in >98% of those with a (+) culture
Term
What % of males with gonorrheal urethritis are coninfecte with c. trachomatis?
Definition
10-30%
Term
What is the primary site for urogenital infection of gonorrhea in females?
Definition
endocervical canal primary site. 70-90% also colonize urethra
Term
What are the sx of gonorrheal urogenital infections in females?
Definition
majority *asymptomatic*; may have vaginal discharge, dysuria, pain on urination, (labial pain/swelling, abdominal pain)
Term
As of 2007, when are FQ recommended for GC?
Definition
FQ no longer recommended for any GC
Term
What are tx options for Gonorrhea of the cervix, urethra, and rectum?
Definition
cefixime 400 mg (available as tablet or suspension) or Ceftriaxone 125 IM *PLUS Chlamydial therapy if infection not ruled out*
Term
Spectinomycin 2 grams IM in a single dose or single dose cephalosporin (cefotaxime 500 mg IM) or Azythromycin 2 gm single dose are *alternative regimens* for what disease?
Definition
Gonorrhea: cervix, urethra, rectum *(PLUS Chlamydial therapy (azithro 1 gm or doxy 100 mg bid x 7 days) if infection not ruled out)*
Term
How should ceftriaxone 125 IM in a single dose be given to tx gonorrhea of the pharynx?
Definition
*PLUS Chlamydial therapy if infection not ruled out*
Term
Pustular skin lesions on the hands or feet, tenoxynovitis, and acute infections arthritis (most common cause in sexually active adults) are signs of what disease?
Definition
disseminated gonorrhea
Term
How should disseminated gonorrhea be tx?
Definition
Ceftriaxone 1 gm IV x 7 days
Term
Cefotaxime or Ceftizoxime 1 gm IV q8 hr or Ciprofloxacin 400 mg IV q 12 for 7 days are alternative regimens for what disease?
Definition
disseminated gonococcal infection
Term
Pts who have been dx with gonorrhoea should refer all sex partners in what time period for evaluation and tx of what?
Definition
preceeding 60 days for eval and tx of gonorrhoea *and* C. trachomatis
Term
How long should pts with gonorrhoea avoid sex?
Definition
until tx is completed for themselves and sex partner and symptoms have resolved
Term
What percentage of nongonococcal urethritis is C. trachomatis?
Definition
20-40%
Term
What percentage of nongonococcal urethritis are genital mycomplasms (Ureaplasma urealyticum, Mycoplasma genitalium)
Definition
20-30%
Term
What organisms occasionaly cause nongonococcal urethritis?
Definition
Trichomonas vaginalis, HSV
Term
What are the Sx of nongonococcal urethritis?
Definition
mild dysuria, mucoid discharge
Term
How is nongonococcal urethritis dx?
Definition
Urethral smear over or equal to 5 PMNs (usually more than 15/OI field). Urine microscopic over or equal to 10 PMNs/HPF. Leukocyte esterase (+).
Term
How should nongonococal urethritis (NGU) be tx?
Definition
Azithromycin 1 gm in single dose or Doxycycline 100 mg bid for 7 days
Term
For recurrent or persistent urethritis, metronidazole should be given in 2gm single dose *PLUS* what 2 meds?
Definition
erythromycin base 500 mg qid x 7d or erythromycin ethylsuccinate 800 mg qid x 7d
Term
What is the most frequently reported STD in US?
Definition
chlamydia
Term
Is chlamydia more prevalent in males or females?
Definition
rates 4x higher in females
Term
What is the prevalence of coinfection in partners with chlamydia?
Definition
high prevalence (>50%)
Term
What has been the standard lab test for chlamydia?
Definition
tissue culture
Term
How can nucleic acid hybridization (NA Probe) detect gonorrhea and chlamydia?
Definition
able to detect gonorrhea and chlamydia from one swab
Term
PCR and LCR are examples of what type of lab tests for chlamydia?
Definition
*DNA amplification assays*
Term
For what populations is an annual screening recommended for chlamydia trachomatis?
Definition
annual screening of sexually active less than or equal to 25 yrs. annual screening of sexually active women over 25 yrs with risk factors (new or multiple sex partners). Sexual risk assessment may indicate more frequent screening for some women. Rescreen women 3-4 mos after x due to high prevalence of repeat infection
Term
How should chlamydia trachomatis be tx?
Definition
Azithromycin 1 gm single dose or doxycycline 100 mg bid x 7d
Term
What percent of women with GC develop PID?
Definition
10-20%
Term
In Europe and North America, what is the correlation between C. trachomatis, N. Gonorrhoeae, and PID symptoms?
Definition
Higher proportion of C. tracchomatis than N. gonorrhoeae in women with symptoms of PID
Term
What are the CDC minimal criteria for PID?
Definition
uterine adnexal tenderness, cervical motion tenderness. other sx inlcude: endocervical discharge, fever, lower abdominal pain
Term
What are complications of PID?
Definition
infertility: 15-24% with 1 episode PID secondary to GC or chlamydia. 7x risk of ectopic pregnancy with 1 episode of PID. Chronic pelvic pain in 18%.
Term
PID can be tx orally with Ofloxacin or Levofloxacin WITH OR WITHOUT what?
Definition
Metronidazole
Term
PID can be tx orally with Ceftriaxone or Cefoxitin PLUS what medication WITH OR WITHOUT what medication?
Definition
PLUS Doxycycline WITH OR WITHOUT Metronidazole
Term
PID can be tx parenterally with Ofloxacin or Levofloxacin WITH OR WITHOUT what meds PLUS what med?
Definition
WITH OR WITHOUT Metronidazole or Ampicillin/Sulbactam PLUS Doxycyline
Term
Regarding PID, sex partners should be tx how with regimens effective against what organisms?
Definition
Sex partners should be tx empirically with reimens effective against both C. trachomatis and GC
Term
Regarding epididymitis, if less than 35, infection likely due to what?
Definition
GC or CT
Term
Regarding epididymitis, if age > 35, infection likely due to
Definition
enteric organimsm (E. coli)
Term
What organism causes Trichomoniasis?
Definition
Trichomonas vaginalis, an anaeroic flagellated protozoa
Term
What is the regimen for trichomoniasis?
Definition
Metronidazole
Term
What are 3 types of warts caused by papillomavirus?
Definition
vaginal warts, urethral meatal warts, anal warts
Term
How should pts be reassured when taking a sexual history
Definition
Let your pt know that a sexual history is a routine part of every adult history regardless of age, sex, gender or marital status.
Assure will be kept in strict confidence.
Term
What are the 5 "P"s?
Definition
Partners: No., gender (never make assumptions) and partner risk factors. Practices: oral, vaginal, anal. Protection from STDs: condoms. Past history of STDs: Include testing and partners. Prevention of pregnancy.
Term
Despite adolexcents greater risk of STDs, providers often fail to do what?
Definition
Inquire about sexual behavior, assess risk, counsel about risk reduction, screen for asymptomatic infection
Term
How did abstinence only education differ from control groups?
Definition
It did not.
Term
Consistent/correct use of latex condoms reduce HIV risk by what percent?
Definition
90%
Term
On what surfaces are male condoms most likely to prevent infection transmission?
Definition
Mucosal (gonorrhea, chlamydia, trichomonas, HIV) more than skin-skin (HSV, HPV< syphilis, chancroid)
Term
What is the difference in HIV transmission with consistent versus inconsistent condom use?
Definition
HIV transmission with consistent condom use: 1.1 per 100 person-yrs. HIV transmission with inconsistent condom use: 9.7 per 100 person-yrs.
Term
Vaginal spermicides, vaginal contraceptive sponges, and a diaphragm all reduce risk of what?
Definition
All reduce riks for cervical gonorrhea and chlamydia. HIV and other pathogens may infect the vagina or vulva; there is no data on ability to protect from these infections.
Term
Noxonyl 9 vaginal spermicides are NOT effective in preventing what infections?
Definition
CT, GC, HIV
Term
Spermicides alone are NOT recommended for what?
Definition
STD/HIV prevention
Term
By what percentage is HIV transmission reduced by adult circumcision with no behavioral risk compensation?
Definition
55-60% reduction
Term
How does circumcision affect *HPV*, *HSV-2*, and syphilis?
Definition
*HPV* reduced by 35%, *HSV-2* reduced by 25%, but no effect on syphilis
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