Question

In Modern obstetrics, for sensitized Rhnegative mother what should be done to evaluate the condition of the mother ?

• A. MCA doppler peak systolic volume
• B. Fetal blood
• C. Amniocentesis
• D. Biophysical profile

Answer 1

The Correct Option is A

To evaluate the condition of a sensitized Rh-negative mother in modern obstetrics, the most appropriate measure to undertake is the use of MCA Doppler peak systolic volume. Let's examine why this is the preferred choice:

• MCA Doppler Peak Systolic Volume: This non-invasive test uses Doppler ultrasound to assess the peak systolic velocity of the middle cerebral artery (MCA) in the fetus. Elevated readings can indicate fetal anemia, a condition that sensitized Rh-negative mothers are at risk of due to the presence of maternal antibodies attacking fetal red blood cells.
• Fetal Blood Sampling: While providing direct information on fetal condition, this technique is more invasive and carries higher risk factors such as fetal bleeding or infection. Therefore, it is not a first-line evaluation.
• Amniocentesis: Although useful for detecting fetal anemia and bilirubin levels through amniotic fluid analysis, it is also invasive and carries risk of complications, making it less ideal compared to a Doppler study.
• Biophysical Profile: This provides a comprehensive evaluation of fetal well-being but does not specifically address the concern of anemia which is critical in the context of sensitized Rh-negative mothers.

Therefore, MCA Doppler peak systolic volume is selected due to its non-invasive nature and its effectiveness in diagnosing fetal anemia, reducing the need for riskier procedures.