system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A G1+O attends the antenatal clinic for the booking visit at 12 weeks. Her blood group is B Rhesus negative.What is the next step in the management?
assistant
The correct answer is  Ans. is b, i.e. Determine the husbands blood groupWhen a rhesus negative primipara attends the antenatal clinic, the first step is to determine her husband's blood group. If the husband is Rhesus negative no further investigations are necessary, as all babies will be Rhesus negative.