National Dental Examining Board of Canada (NDEB) Practice Exam

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Master your National Dental Examining Board of Canada (NDEB) exams with our comprehensive practice guide. Achieve excellence in your dental certification with expertly crafted questions and detailed explanations.

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The risk of contracting Hepatitis B through a needlestick injury from a chronic carrier is increased when the patient's serology report indicates the presence of:

  1. HBsAg

  2. HBcAg

  3. HBeAg

  4. Anti-HBs

The correct answer is: HBeAg

The serology report measures the presence of certain antibodies and antigens in the blood. In the case of Hepatitis B, the presence of HBeAg indicates an active infection with a high level of hepatitis B virus in the blood. This significantly increases the risk of contracting the virus through a needlestick injury. In contrast, options A, B, and D do not necessarily indicate an active infection and therefore would not increase the risk of contracting Hepatitis B.