Comparison of manual versus automated measurement to estimate fetal weight in isolated oligohydramnios with preterm prelabor rupture of membranes

Abstract

Objective It was aimed to evaluate the effects of alternative measurement methods in estimating actual birth weight (actual BW) in third-trimester isolated oligohydramnios. Methods In our study in prospective design, 78 pregnant women between 336/7and 366/7 weeks of gestation were evaluated. Routine biometric measurements were obtained through two-dimensional (2D) ultrasonography. Calipers were placed in the sections where the measurements were made for manual measurement. Then, automatic measurement was obtained by sonography device on the same image. Fetal weight was estimated using the Hadlock II formula. Results The mean manual and automated estimated fetal weights (EFWs) and actual birth weights (actual BWs) were 2281.1±326, 2371.5±324 and 2417.2±353, respectively. Manual EFW was lower than both actual BW and automated EFW at a statistically significant level (p = 0.002, p = 0.001, respectively). In correlation analysis, a significant positive correlation was found between actual BW and, both manual EFW and automated EFW (p <0.001). However, this relationship was higher in automated EFW when compared to manual EFW (r=0.858 vs r=0.734). Conclusion It is very important to estimate the EFW accurately in the practice of obstetrics. In our study, the automatically obtained EFW was found to be closer to the actual BW when compared to the manually obtained EFW. Artificial intelligence, which has recently become one of the most important subjects of technology, could provide us greater assistance in estimating fetal weight when used in sonography devices in the near future.

Keywords

• Fetal ultrasonography
• oligohydramnios
• fetal weight
• birth weight

Preterm erken membran rüptürü olan izole oligohidramniyoz olgularında fetal ağırlığın tahmininde manuel ve otomatik ölçümlerin karşılaştırılması

Abstract

Amaç Üçüncü trimesterde tespit edilen izole oligohidramniyoz olgularında alternatif ölçüm yöntemlerinin gerçek (aktüel) doğum ağırlığını tahmin etmedeki etkilerinin değerlendirilmesi amaçlandı. Gereç ve Yöntemler Prospektif kohort çalışmamızda, 336/7 ve 366/7 gebelik haftaları arasında 78 gebe değerlendirildi. Rutin biyometrik ölçümler iki boyutlu (2D) ultrasonografi ile elde edildi. Manuel ölçümlerin yapıldığı bölümlere kaliperler yerleştirildi. Daha sonra aynı görüntü üzerinde ultrasonografi cihazı ile otomatik ölçüm alındı. Fetal ağırlık Hadlock II formülü kullanılarak hesaplandı. Bulgular Ortalama manuel ve otomatik tahmini fetal ağırlıklar (TFA) ve gerçek doğum ağırlıkları (aktüel DA) sırasıyla 2281,1 ± 326, 2371,5 ± 324 ve 2417,2 ± 353 idi. Manuel TFA, istatistiksel olarak anlamlı düzeyde hem gerçek (aktüel) DA'dan hem de otomatik TFA'dan daha düşüktü (sırasıyla p = 0.002, p = 0.001). Korelasyon analizinde, gerçek DA ile hem manuel TFA hem de otomatik TFA arasında anlamlı bir pozitif korelasyon bulundu (p <0,001). Bununla birlikte, bu ilişki manuel TFA ile karşılaştırıldığında otomatik TFA'da daha yüksekti (r = 0.858 vs r = 0.734). Sonuç Obstetrik uygulamada TFA'yı doğru tahmin edebilmek önem arz eder. Çalışmamızda, otomatik olarak elde edilen TFA'nın manuel olarak elde edilen TFA ile karşılaştırıldığında gerçek DA'ya daha yakın olduğunu gösterdik. Son zamanlarda teknolojinin en önemli konularından biri haline gelen yapay zeka, yakın gelecekte ultrasonografi cihazlarında kullanıldığında fetal ağırlığın tahmin edilmesinde bize daha fazla yardım sağlayabilir.

Keywords

• Fetal ultrasonografi
• oligohidramniyoz
• fetal ağırlık
• doğum ağırlığı

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