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
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”
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!
2. a. Active Antiretroviral Therapy (AART)
Cause: Haemophilus ducreyi, a gram-negative bacillus
Chancroid
Prevalence: Chancroid
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. _______: 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
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
Males: Often asymptomatic Chlamydia:
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)
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
4. health
Cause: Human papillomavirus (HPV)
Genital Warts (Condyloma acuminata)
Prevalence
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)
Treatment: Genital Warts (Condyloma acuminata)
Prevention
6, 11, 16, and 18