Causes of isolated spontaneous abortion
The causes for isolated spontaneous abortion in 1st & 2nd trimester include:
2.Trisomy – 2nd best answer
3.Monosomy X (20%)- 3rd
4.Trisomy 16 (16%)
Germ plasm defects
• Weather it is first or second trimester the m/c cause is chromosomal abnormality.
The frequency of abortion during 1st trimester is 50% and during 2nd is 35%