Prenatal Invasive Fetal Karyotyping in the Era of First Trimester Screening and Noninvasive Prenatal Testing (NIPT) : Table 2

Table 2: Indication of prenatal invasive procedures with a normal fetal karyotype.

Indication of prenatal invasive procedures with normal fetal karyotype	AC (n=437)	CVS (n=164)	Total (n=601)
Suspicious first trimester screening	99	90	189
Increased nuchal translucency	11	25	36
Suspicious biochemistry	74	41	115
Combined elevated risk	14	24	38
Maternal age	209	33	242
Suspicious genetic history	41	36	77
Suspicious ultrasound findings	74	5	79
Other indications (request, infections, etc.)	20	0	20
* Total number of indications larger than total population due to double indication