This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gestational Diabetes Mellitus, Subject name: Gynaecology & Obstetrics
In Gestational diabetes mellitus what is NOT usually seen 
Select and explain. 
A. Macrosomic baby, B. Malformations like cardiac and neural tube defects, C. Shoulder dystocia, D. Polyhydramnios
B: Malformations like cardiac and neural tube defects
Answer: B: Malformations like cardiac and neural tube defects 
Explanation: Fetal anomalies are more commonly seen in ove diabetics with poor glycemic control in first trimester, which is the time for organogenesis, and usually not with gestational diabetes where sugars are deranged later in pregnancy as a pa of new onset carbohydrate intolerance The majority of patients will be at average risk and the best time to screen them is between 24 and 30 weeks of gestation.