Determination of fetal nuchal thickness in 2ND trimester of pregnancy in pregnant women reside in georgia region

Giriş

in earlier studies the high risk of chromosomal anomalies has been detected in fetuses with Fetal Nuchal Thickness (FNT) more than 6 mm and there are the appreciable peculiarities of FNT specified of local and ethnic difference. The aim of our study was to determine the FNT in Georgia resident pregnant women in 2nd trimester of pregnancy.

Yöntem

From 1994 to June 2002 tlıe 4750 pregnant women at 15 to 27 weeks of pregnancy were prospectively studied by routine ultrasound and any abnormalities of fetuses were observed. FNT measurement was obtained by standard ultrasound section in transverse plane of the fetal head. Under proceclure of examination the 5th, 50th and 95th percentiles were determined.

Bulgular

The mean index of FNT increased from 15 to 22 weeks of gestation (M ± 2SD):
15 weeks - 3.0 ± 0,27mm                    19 weeks - 3,5 ± 0,81 mm
16 weeks - 3,0 ± 0,19 mm                   20 weeks - 3,8 ± 0,45 mm
17 weeks - 3,3 ± 0,90 mm                   21 weeks - 3,8 ± 0,35 mm
18 weeks - 3.5 ± 1,90 mm                   22 weeks - 4,0 ± 0,27 mm

The mean index of FNT from 23 to 27 weeks of gestation varied (M ± 2SD): 23 weeks - 4.0 ± 0,20 mm                  26 weeks - 3,9 ± 0,27 mm
24 weeks - 3.8 ± 1,0 mm                    27 weeks - 4,0 ± 0,16 mm
25 weeks - 3.9 ± 0,14 mm

Sonuç

 The mean measurement of FNT in our study varied but in all cases was not more then 5 mm in normal fetuses at 15 to 27 weeks of gestation. The obtained FNT mean index can be useful in routine ultrasound screening program to detect the genetic disorders as a selective test before the basic genetic examination.

Anahtar Kelimeler

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