Fetal biometric parameters: Reference charts for a non-selected risk population from Uberaba, Brazil

Journal of Ultrasonography

卷:17

Taciana Mara Rodrigues da Cunha Caldas¹  Wellington P. Martins¹  Fernando Felix Dulgheroff²  Alberto Borges Peixoto²  Edward Araujo Júnior² 

[1] Radiologic Clinic of Uberaba (CRU), Uberaba-MG, Brazil;

[2] Mario Palmério University Hospital – University of Uberaba (Uniube), Uberaba-MG, Brazil;

关键词: biparietal diameter;    abdominal circumference;    femur diaphysis length;    estimated fetal weight;    reference charts;   

DOI  :  10.15557/JoU.2017.0003

来源: DOAJ

【 摘 要 】

Objective: To establish reference charts for fetal biometric parameters in a non-selected riskpopulation from Uberaba, Southeast of Brazil. Methods: A retrospective cross-sectionalstudy was performed among 5656 non-selected risk singleton pregnant women between14 and 41 weeks of gestation. The ultrasound exams were performed during routine visitsof second and third trimesters. Biparietal diameter (BPD) was measured at the level of thethalami and cavum septi pellucidi. Head circumference (HC) was calculated by the followingformula: HC = 1.62*(BPD + occipital frontal diameter, OFD). Abdominal circumference(AC) was measured using the following formula: AC = (anteroposterior diameter + transverseabdominal diameter) × 1.57. Femur diaphysis length (FDL) was obtained in the longestaxis of femur without including the distal femoral epiphysis. The estimated fetal weight(EFW) was obtained by the Hadlock formula. Polynomial regressions were performed toobtain the best-fit model for each fetal biometric parameter as the function of gestationalage (GA). Results: The mean, standard deviations (SD), minimum and maximum of BPD(cm), HC (cm), AC (cm), FDL (cm) and EFW (g) were 6.9 ± 1.9 (2.3 – 10.5), 24.51 ± 6.61(9.1 – 36.4), 22.8 ± 7.3 (7.5 – 41.1), 4.9 ± 1.6 (1.2 – 8.1) and 1365 ± 1019 (103 – 4777),respectively. Second-degree polynomial regressions between the evaluated parametersand GA resulted in the following formulas: BPD = –4.044 + 0.540 × GA – 0.0049 × GA²(R² = 0.97); HC= –15.420 + 2.024 GA – 0.0199 × GA² (R² = 0.98); AC = –9.579 + 1.329 ×GA – 0.0055 × GA² (R² = 0.97); FDL = –3.778 + 0.416 × GA – 0.0035 × GA² (R² = 0.98) andEFW = 916 – 123 × GA + 4.70 × GA² (R² = 0.96); respectively. Conclusion: Reference chartsfor the fetal biometric parameters in a non-selected risk population from Uberaba, Southeastof Brazil, were established.

【 授权许可】

Unknown