Exam 4 Flashcards
What is syphilis caused by?
Spirochete
How is syphilis transmitted?
Direct mucocutaneous contact
What are the stages of syphilis?
- Primary (chancre at site of inoculation, can be symptomatic or asymptomatic)
- Secondary (within 6 months of initial infection, high risk of hematogenous dissemination, rash, fatigue, malaise, sore throat)
- Latency (early latency occurs within 1-2 years of initial infection and is asymptomatic, late latency has progressive organ involvement like CV complications)
When should asymptomatic patients be screened for syphilis?
If they have high risk factors for acquisition and factors for transmission (like pregnancy)
What diagnostic tests can be done for symptomatic syphilis patients?
- Nontreponemal test (also used for disease monitoring, tells us if there is an active infection)
- Treponemal test (antibody test, can tell us that the patient had syphilis at one point)
Drug of choice for treating syphilis
Benzathine penicillin G 2.4 million units IM single dose
What is chlamydia caused by?
C. trachomatis
How does chlamydia look like in women?
- Affects the cervix
- 75% are asymptomatic
- 50% end in endometritis
- Small percent has severe infection
- Symptoms = vaginal discharge, abnormal vaginal bleeding, purulent endocervical discharge
How does chlamydia look like in men?
- Common cause of nongonococcal urethritis
- Majority asymptomatic
- Symptoms = mucoid or watery urethral discharge and dysuria
Treatment of chlamydia
Doxycycline 100 mg PO BID for 7 days
- Alternatives = Azithromycin 1 g PO , Levofloxacin 500 mg PO QID for 7 days
Treatment of chlamydia in pregnancy
- Azithromycin 1 g PO
- Amoxicillin 500 mg PO TID for 7 days
Presentation of gonorrhea
Urethritis, cervicitis, pharyngitis, PID
- Symptoms appear within 10 days (there are some cases of asymptomatic patients)
If you don’t treat gonorrhea, what can it lead to?
- Bacteremia
- Arthritis
- Meningitis
Treatment of gonorrhea
Ceftriaxone 250 mg IM
- Alternative = cefixime, cefotaxime + azithromycin, cefoxitin + azithromycin
- If penicillin allergy = azithromycin, gentamicin
Treatment of gonorrhea in pregnancy
Ceftriaxone + azithromycin