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Journal Article
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Nonoccupational HIV postexposure prophylaxis: a new role for the emergency department.
Annals of Emergency Medicine 2000 October
Despite numerous primary prevention campaigns, new cases of HIV infection are occurring at high rates. Postexposure prophylaxis (PEP) after possible HIV exposures from sexual encounters or injection drug use may prove to be a worthwhile means of reducing HIV infection. Although there are no studies that directly demonstrate its efficacy, indirect support comes from animal and human studies. Multiple animal studies have shown that antiretroviral medications can reduce simian immunodeficiency virus infections if given early and for a prolonged period. A study of health care workers suggests that zidovudine taken after needlestick injuries can dramatically reduce HIV seroconversion. Zidovudine and nevirapine use recently showed great reductions in perinatal HIV transmission. Studies of dendritic and T-cell processing of simian immunodeficiency virus and HIV indicate that antiretroviral medications taken soon after a viral exposure may terminate viral replication. Regimens of 2 or 3 antiretroviral medications have been suggested as prophylactic measures after certain exposures. Even though limited experience exists with these populations, HIV PEP is most likely safe in pregnancy and for children. Emergency departments are encouraged to anticipate the probable demands for nonoccupational HIV PEP by establishing protocols for its rapid provision and ensuring proper follow-up care.
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