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An analytical cross-sectional study: determining gestational age using fetal clavicle length during the second trimester

  • Maternal-Fetal Medicine
  • Published:
Archives of Gynecology and Obstetrics Aims and scope Submit manuscript

Abstract

Purpose

To investigate the correlation between fetal clavicle length and gestational age in pregnant patients from 14 and 27 weeks of gestation.

Methods

This was a retrospective cross-sectional study of patients from 14 and 27 weeks of gestation. Ultrasonographic measurements such as abdominal circumference (AC), femur length (FL), humerus length (HL), clavicle length (CL), head circumference (HC), biparietal diameter (BPD), estimated fetal weight (EFW), and transverse cerebellum diameter (TCD) were made and compared.

Results

A total of 552 patients were evaluated in our clinic and CL was measured properly and successfully in all fetuses. Fetal AC, FL, HL, CL, BPD, HC, EFW and TCD measurements were significantly and strongly correlated with gestational week, and Pearson’s correlation values were 0.964, 0.965, 0.959, 0.965, 0.951, 0.917, 0.925, and 0.954, respectively (p < 0.001). In the regression analysis equation, gestational week = 0.894 + CL × 0.961.

Conclusion

There was a significant positive correlation between fetal CL (mm) and gestational week. We suggest that the 1 mm = 1 week rule can be used for patients with anomalies of the cerebellum and vermis, as well as for patients with unknown last menstrual period.

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Data availability

The data that support this article is available from the corresponding author, upon reasonable request.

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Authors

Contributions

All authors contributed to the study conception and design. Material preparation, data collection and analyss were performed by FA, SS, MB, OE, BK, DCA. The first draft of the manuscript was written by FA, MK, AB, CC Ayse Ceren Duymus and Nur Gozde Kulhan and all authors commented on previous of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Fazıl Avcı.

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Avcı, F., Serin, S., Bakacak, M. et al. An analytical cross-sectional study: determining gestational age using fetal clavicle length during the second trimester. Arch Gynecol Obstet 309, 2663–2668 (2024). https://doi.org/10.1007/s00404-023-07196-1

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  • DOI: https://doi.org/10.1007/s00404-023-07196-1

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