Which measurements are routinely used to monitor patients with HIV infection undergoing antiretroviral therapy?

Which measurements are routinely used to monitor patients with HIV infection undergoing antiretroviral therapy?

• A. HIV antibody titer
• B. p24 antigen levels
• C. CD4 T-cell and CD8 T-cell counts
• D. CD4 T-cell count and HIV RNA copy number

Answer: (D)

Monitoring patients on antiretroviral therapy focuses on immune status and viral replication. CD4 T-cell counts tell you how well the immune system is faring and the risk of opportunistic infections, while HIV RNA copy number (viral load) shows how effectively the virus is being suppressed by therapy. Together, these two measurements give a clear picture of treatment success: a rising or stable CD4 count with an undetectable or significantly reduced viral load indicates good control of infection. HIV antibody titers don’t reflect current viral activity once infection is established, so they aren’t used for routine monitoring during ART. p24 antigen levels are useful mainly in early infection or diagnostic contexts but are not reliable for ongoing monitoring of treatment response. CD4 counts alone don’t show whether the virus is being suppressed, and while CD8 or CD4/CD8 ratios can provide additional information, they aren’t the standard monitoring pair.

Monitoring patients on antiretroviral therapy focuses on immune status and viral replication. CD4 T-cell counts tell you how well the immune system is faring and the risk of opportunistic infections, while HIV RNA copy number (viral load) shows how effectively the virus is being suppressed by therapy. Together, these two measurements give a clear picture of treatment success: a rising or stable CD4 count with an undetectable or significantly reduced viral load indicates good control of infection.

HIV antibody titers don’t reflect current viral activity once infection is established, so they aren’t used for routine monitoring during ART. p24 antigen levels are useful mainly in early infection or diagnostic contexts but are not reliable for ongoing monitoring of treatment response. CD4 counts alone don’t show whether the virus is being suppressed, and while CD8 or CD4/CD8 ratios can provide additional information, they aren’t the standard monitoring pair.