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Table 3 Distribution of chromosomal abnormalities within groups of different classifications

From: Fetal genetic findings by chromosomal microarray analysis and karyotyping for fetal growth restriction without structural malformations at a territory referral center: 10-year experience

 

Chromosomal abnormalities (n, %)

Gestational age at onset

  ≤ 24 weeks (n = 194)

14, 7.2%

 25–28 weeks (n = 128)

3, 2.3%

 29–32 weeks (n = 146)

2, 1.4%

 > 32 weeks (n = 21)

0, 0.0%

Ultrasound findings

 

 Isolated FGR (n = 311)

10, 3.2%

 FGR with soft markers (n = 134)

7, 5.2%

 FGR with nonstructural abnormalities (n = 43)

2, 4.7%

Serological screening

 High risk (n = 67)

5, 7.5%

 Low risk (n = 149)

3, 2.7%