Preconception Care for HIV-Serodiscordant Couples
Strategies for Preventing HIV Transmission
- The American College of Obstetricians and Gynecologists recommends that HIV-positive partners achieve an undetectable viral load with antiretroviral therapy (ART) for at least 6 months before attempting conception, and HIV-negative partners use pre-exposure prophylaxis (PrEP) during the conception period to maximize protection 1
- The Centers for Disease Control and Prevention (CDC) suggests that viral load should be undetectable and maintained for at least 6 months before unprotected sex 1
- HIV RNA monitoring should be performed every 3 months until suppressed for at least 1 year, then can be reduced to every 6 months if clinically stable 1
- Evidence from the HPTN052 study shows that ART reduces HIV transmission by more than 96% in serodiscordant couples 1
- The PARTNER study reported no HIV transmissions during an estimated 894 couple-years of observation when the HIV-positive partner used ART, even when unprotected sex occurred 1
Additional Prevention Measures
- The World Health Organization (WHO) recommends that HIV-negative partners consider using PrEP (a combination of tenofovir disoproxil fumarate and emtricitabine) during the conception period 1
- PrEP provides an additional layer of protection even when the HIV-positive partner has an undetectable viral load 1
- The use of spermicides containing nonoxynol-9 is contraindicated due to the increased risk of genital lesions and potential facilitation of HIV transmission 2, 1
Antiretroviral Therapy Considerations
- Avoid medications with reproductive toxicity during conception attempts, particularly efavirenz, which has teratogenic effects 1
- Nevirapine should be used with caution in women with CD4 counts >250/mm³ due to the risk of severe hepatotoxicity 3
Post-Conception Care
- Continue ART throughout pregnancy to prevent vertical transmission 4, 5
- HIV-infected mothers should not breastfeed to minimize the risk of vertical transmission 4, 1
- Infants should receive appropriate post-exposure prophylaxis, usually zidovudine for 6 weeks 5, 3