Which of the following is preferred treatment after birth for baby of HBsAg positive mother?
**Core Concept**
The core concept being tested here is the prevention of vertical transmission of Hepatitis B virus (HBV) from an infected mother to her newborn. This involves administering a specific treatment to the baby at birth to reduce the risk of HBV infection.
**Why the Correct Answer is Right**
The preferred treatment for the baby of an HBsAg-positive mother is Hepatitis B immune globulin (HBIG) combined with the first dose of Hepatitis B vaccine at birth. HBIG provides passive immunity against HBV, while the vaccine initiates active immunity. This combination is essential to prevent HBV infection in newborns. The HBIG is administered intramuscularly, and the first dose of the Hepatitis B vaccine is given concurrently. This approach has been shown to be highly effective in preventing HBV infection in newborns.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is not the preferred treatment for the baby of an HBsAg-positive mother. The first dose of the Hepatitis B vaccine alone is not sufficient to prevent HBV infection in newborns.
**Option B:** This option is incorrect because it is not the preferred treatment for the baby of an HBsAg-positive mother. HBIG alone is not sufficient to prevent HBV infection in newborns, and the vaccine needs to be administered concurrently.
**Option C:** This option is incorrect because it is not the preferred treatment for the baby of an HBsAg-positive mother. The second dose of the Hepatitis B vaccine is not administered at birth, and the timing of the vaccine doses is critical to prevent HBV infection.
**Clinical Pearl / High-Yield Fact**
It is essential to administer the first dose of the Hepatitis B vaccine and HBIG within 12 hours of birth to prevent HBV infection in newborns. This approach has been shown to be highly effective in preventing HBV infection and reducing the risk of chronic HBV infection in newborns.
**Correct Answer:** A. Hepatitis B immune globulin (HBIG) combined with the first dose of Hepatitis B vaccine.