STDs Flashcards
Immunodeficiency disorders in which human immunodeficiency virus uses T4 (CD4) cells as a receptor and reservoir for HIV
Acquired Immune Deficiency Syndrome (AIDS)
Epidemiology: HIV
1. Modes of transmission similar to those of hepatitis B but
specifically: Blood, semen, vaginal secretions, and
breast milk
2. Risk of infection via needle stick is approximately _____
1:350
Signs/Symptoms: HIV
- _____ ____ symptoms: Think seroconversion (a process of converting from HIV negative to HIV positive; the process takes approximately ___ weeks to 6 months)
- Early s/s include: _____, night sweats, and weight loss
- Flu-like
3 weeks - Fever
- It is more a constellation of signs/symptoms than any single one that is suspicious for AIDS AIDS = CD4 < ____ cells/uL and/or the presence of an opportunistic infection
200
Laboratory/ Diagnostics: HIV
1. _____ for initial screening; sensitivity > 99.9%
2. Western Blot test is confirmatory
3. Latest recommended HIV tests:
a. HIV-1/2 antigen/antibody combination immunoassay;
if positive, proceed to:
b. HIV-1/2 antibody differentiation immunoassay
4. Absolute CD4 lymphocyte count: Normal > ____
cells/uL
5. CD4 lymphocyte percentage
a. Risk of progression to AIDS high when < 20%
6. Viral load
a. ____: Based quantitative copies of HIV-branched
DNA or RNA
b. Results correlate closely with the progression of HIV
c. Ideally should be “zero” or “detectable”
- ELISA
- 800
- a. PCR
Management: HIV
1. Therapy for Opportunistic Infections
a. Treat infection as it occurs
b. Bactrim for ___ _____ pneumonia
prophylaxis
2. Antiretroviral Treatment
a. Combination therapy is standard [____ ____ ____
(__)]
b. When to start AART remains somewhat
controversial.
CDC and UDDHS recommend starting medications
at
the time of HIV+ diagnosis
3. Monitor for the danger of drug resistance: Must be
taken exactly as prescribed!
- b. Pneumocystis jirovecii
2. a. Active Antiretroviral Therapy (AART)
Cause: Haemophilus ducreyi, a gram-negative bacillus
Chancroid
Prevalence: Chancroid
- Endemic in many areas of the United States; must be a part of the differential diagnosis for genital ulcers
- Well established as a co-factor for H1V transmission (high rate of HIV identified among individuals presenting with chancroid)
- Estimated up to ___% of patients are also infected with syphilis and HSV
- 10%
Signs/Symptoms: __________
I. Women: Usually asymptomatic
2. Men: Single (or multiple) superficials, painful ulcer,
surrounded by an erythematous halo
3. Ulcers may be necrotic or seVerely erosive
Chancroid
Diagnosis: Chancroid
- A probable diagnosis is usually a matter of exclusion
- Involves genitalia and unilateral bubo (or both)
- Painful genital ulcers in absence of ___ ____ and HSV (by inspection or culture) with coexisting tender inguinal lymphadenopathy is suggestive of chancroid
- The definitive diagnosis of chancroid is made morphologically (sensitivity no > 80%)
- T pallidum
a. _______: The degree to which those Who have a
disease screen/ test positive
Sensitivity
b. ______: The degree to which those who do not
have a disease screen/test negative
Specificity
Treatment: Chancroid
- ______ (Zithromax) t gram by mouth x 1 dose or
- Ceftriaxone (Rocephin) 250 mg IM x i dose or
- Ciprofloxacin (Cipro) 500 mg by mouth twice a day × 3 days
- Azithromycin
A parasitic STD caused by Chlamydia trachomatis that produces serious reproductive tract complications in either sex
Chlamydia
Signs/Symptoms of Chlamydia: Females: Often asymptomatic 1. Dysuria 2. Intramenstrual spotting 3. Postcoital bleeding 4. Dyspareunia: \_\_\_\_\_ intercourse 5. Vaginal discharge
- Painful
Males: Often asymptomatic Chlamydia:
- ______
- Thick, cloudy penile discharge
- Testicular pain
- Dysuria
Laboratory/Diagnostics: Chlamydia
1. Chlamydia culture is the most definitive test (3 to 9 days
for results)
2. ____ _____ (__) methods preferred (low
cost; 30 to 120 min for results)
- Enzyme immunoassay (EIA)
Treatment: Chlamydia
1. ______ (Zithromax) 1 gram by mouth x 1 dose OR
2. Doxycycline (Vibramycin) 100 mg by mouth twice a day
x 7 days
3. Alternatives: Erythromycin, Ofloxacin, Levofloxacin
4. Report to the ______ department
- Azithromycin
4. health
Cause: Human papillomavirus (HPV)
Genital Warts (Condyloma acuminata)
Prevalence
- The most common viral STD in the United States
- An estimated 3 million cases of HPV (including cervical HPV) are reported annually
Genital Warts (Condyloma acuminata)
Symptoms: Genital Warts (Condyloma acuminata)
Single (or multiple) soft, fleshy, papillary, or sessile, painless _____ growth around the anus, vulvovaginal area, penis, urethra, or perineum
keratinized
Diagnosis: Genital Warts (Condyloma acuminata)
- Clinical presentation; perhaps atypical ___ _____ of undetermined significance (ASCUS) or squamous intraepithelial lesion (SIL) on PAP smear
- Colposcopy useful in diagnosing fiat lesions
- May need to biopsy if at risk for cervical intraepithelial neoplasia (CIN)
- squamous cell
Treatment: Genital Warts (Condyloma acuminata)
- Keratolytic agents: Podophyllin (Pododema), trichloroacetic acid (TCA), or trichloroacetic acid (BCA)
- Referral for cryotherapy, ____ therapy, electrocautery, or excision
- laser
Prevention
- Gardasil [Human Papillomavirus Quadrivalent (Types __, __, __, and ___) Vaccination]
a. Indicated for females and males ages 9 to 26 years
b. Given in 3 injections - Cervarix [Human Papillomavirus Bivalent (Types 16 and 18) Vaccination]
a. Indicated for females ages 10 to 25 years
b. Same as above
6, 11, 16, and 18