Which statement is TRUE regarding a high-risk patient?

The statement regarding high-risk patients that is true is that 0.1ml of blood from a Hepatitis B carrier is more infective than HIV. This is because Hepatitis B virus (HBV) is known to have a much higher viral load in the blood compared to HIV. The risk of transmission for Hepatitis B through contact with infected blood is significantly higher than that of HIV.

Hepatitis B can be present in high concentrations in the blood, making even small amounts, such as 0.1ml, potentially very infectious. On the other hand, HIV requires greater exposure levels to achieve the same likelihood of transmission. Therefore, a small volume of blood from a Hepatitis B carrier poses a substantial risk of infection in a clinical setting, particularly if proper precautions are not observed.

In contrast, the other statements about HIV and Hepatitis B do not accurately reflect the viral loads or risks associated with these viruses. Understanding the infectivity of different pathogens is crucial in managing exposure risks in dental and healthcare settings.