- Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
- Cilt: 21 Sayı: 1
- The role of the ratio of first trimester CRL (crown rump length) measurement to NT (nuchal transluce...
The role of the ratio of first trimester CRL (crown rump length) measurement to NT (nuchal translucency) measurements in predicting early-onset fetal growth restriction (FGR)
Authors : Refaettin Şahin, Atakan Tanacan, Hakkı Şerbetçi, Osman Onur Özkavak, Murat Haksever, Mehmet Utku Başarır, Özgür Kara, Dilek Sahin
Pages : 28-32
Doi:10.38136/jgon.1397142
View : 39 | Download : 47
Publication Date : 2024-04-01
Article Type : Research
Abstract :Objective: Our aim is to evaluate the role of the ratio of first-trimester CRL (crown rump length) measurement to NT (nuchal translucency) measurements in predicting early-onset fetal growth restriction (FGR) and to contribute to the existing literature. Methods: In the present case-control study, fetuses with early-onset FGR were compared to a frequency matched low risk control group. This study was conducted in the perinatology clinic of Ankara Bilkent City Hospital between 2020 and 2023. Maternal age, gravidity, parity, crown-rump length (CRL), and nuchal translucency (NT) measurements were compared between pregnant women with early onset FGR (n=39) and pregnant women without FGR (n=50). Results: The mean age of pregnant women with FGR who participated in the study was 27.1±0.8, and the mean age of pregnant women without FGR was 26.3±0.6, and no statistically significant difference was found between the two groups (p=0.4)). Mean CRL was 54.98±1.08 mm in the group with FGR and 56.99±1.11 mm in the group without FGR; there was no significant difference between the two groups (p=0.2). The NT value was 1.11 ± 0.04 mm in the FGR group and 1.13 ± 0.02 mm in the without FGR group, there was no significant difference between the two groups (p=0.73). The mean CRL/NT ratio was 52.00±2.33 in the group with early onset FGR and 51.46±1.48 in the group without FGR and there was no statistically significant difference between the two groups (p=0.83). When the early developing FGR group is evaluated within itself, the mean age at diagnosis was 31.7±0.3 weeks. EFW mean percentile at diagnosis was 4.5±0.6 and ac percentile was 2.9±0.4. The mean umbilical artery systole/diastole ratio (UA-SD) was 2.9±0.16 and the mean umbilical artery pulsatility index (UA-PI) was 1.02±0.05. Conclusion: Crown-rump length to nuchal translucency ratio is not clinically useful to predict early-onset FGR.Keywords : FBK, fetal büyüme kısıtlılığı, NT, CRL, nukhal saydamlık, baş popo mesafesi