Question

A 37-year-old woman is brought to emergency department because of crampy abdominal pain and vaginal bleeding for 3 hours. She is 11 weeks pregnant. This is her first pregnancy. Her pregnancy has been unremarkable until this episode. Her temperature is 36.8 C (98.2 F), pulse is 106/min, blood pressure is 125/70 mm Hg, and respiration rate is 22/min. Speculum examination shows the presence of blood in the vagina and cervical dilatation. Inevitable spontaneous abortion is suspected. After discussing the condition with the patient, she gave her consent for dilatation and curettage. What is the most common cause of spontaneous abortions?

A. Chromosomal abnormality, polyploidy
B. Chromosomal abnormality, monosomy X
C. Chromosomal abnormality, trisomy
D. Effects of environmental chemicals
E. Immunologic rejection
F. Infection
G. Maternal endocrinopathies
H. Physical stresses
I. Teratogenic drugs

Answer 1

The most common cause of spontaneous abortions is chromosomal abnormality, trisomy.

Step-by-step explanation:

The most common cause of spontaneous abortions is chromosomal abnormality, trisomy. In this case, it is likely that the fetus has a chromosomal abnormality which has led to the miscarriage. Chromosomal abnormalities can occur due to errors in the division of chromosomes during fertilization or early development of the embryo.