☰ Menu

Infertility and spontaneous abortion  - Spontaneous abortion, habitual abortion

Chromosomal complements in spontaneous abortions recognized clinically in the first trimester

Complement Frequency (%)
Normal or 46, XY or 46,XX   54.1
Triploidy   7.7
Tetraploidy   2.6
Monosomy X   8.6
Structural abnormalities   1.5
Sex chromosomal polysomy   0.2
Autosomal monosomy (G)   0.1
Autosomal trisomy   22.3
- No. 1 0  
- No. 2 1.11  
- No. 3 0.25  
- No. 4 0.64  
- No. 5 0.04  
- No. 6 0.14  
- No. 7 0.89  
- No. 8 0.79  
- No. 9 0.72  
- No. 10 0.36  
- No. 11 0.04  
- No. 12 0.18  
- No. 13 1.07  
- No. 14 0.82  
- No. 15 1.68  
- No. 16 7.27  
- No. 17 0.18  
- No. 18 1.15  
- No. 19 0.01  
- No. 20 0.61  
- No. 21 2.11  
- No. 22 2.26  
Double trisomy   0.7
Mosaic trisomy   1.3
Other abnormalities or not specified   0.9

(Data compiled from multiple sources. Simpson JL, Bombard AT: Chromosomal abnormalities in spontaneous abortion: Frequency, pathology, and genetic counseling. In Bennet MJ, Edmonds EK (eds): Spontaneous and Recurrent Abortion, p 51, London, Blackwell Scientific Publications, 1987.)