Most common cause of spontaneous abortion in first trimester:: (A) Chromosomal anomalies, (B) Uterine anomalies, (C) Antiphospholipid antibody syndrome, (D) Hypothyroidism
Answer is A. Ans: A (Chromosomal anomalies) Ref: Dutta: Textbook of Obstetrics 7th ed pg 160Explanation:COMMON CAUSES OF MISCARRIAGEFirst TrimesterGenetic factors Endocrine Immunological disorders InfectionUnexplainedSecond TrimesterAnatomicCervical incompetenceBicomuate uterusSeptate uterusUterine synechiaeUterine fibroidMaternal medical illnessUnexplained