This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other hea diseases in children, Subject name: Pediatrics
Most specific cardiovascular anomaly in infant of diabetic mother - 
Select and explain. 
A. VSD, B. TGA, C. TAPVC, D. ASD
B: TGA
Answer: B: TGA 
Explanation: PROBLEMS IN INFANT OF DIABETIC MOTHER : - MACROSOMIA/ LARGE FOR DATE BABY - METABOLIC: Hypoglycemia Hypocalcemia Hypomagnesemia Polycythemia Neonatal jaundice - RESPIRATORY PROBLEMS: More chances of Respiratory Distress Syndrome d/t delayed maturation of surfactant - CVS: MC congenital abnormality in IDM --> C.H.D MC congenital hea disease in IDM --> V.S.D Most specific congenital hea disease in IDM - TGA - CNS: MC congenital neurologic abnormality in IDM - Neural tube defect Most specific neurologic abnormality in IDM - Sacral agenesis or caudal regression syndrome. Overall most specific congenital abnormality in IDM - Sacral agenesis or caudal regression syndrome - RENAL: Renal agenesis Duplication of ureter Renal vein thrombosis - GI : Duodenal atresia Lazy (small) left colon syndrome - LONG TERM PROBLEMS Blindness Obesity Non ketotic hypoglycemia Diabetes mellitus Congenital anomalies are seen in infant of gross diabetic mother and not in infant of GDM mother.