Intrapartum prediction of birth weight with a simplified algorithmic approach derived from maternal characteristics

被引:0
|
作者
Yapan, Piengbulan [1 ]
Promchirachote, Chirameth [1 ]
Yaiyiam, Chutima [1 ]
Rahman, Suraiya [1 ]
Pooliam, Julaporn [2 ]
Wataganara, Tuangsit [1 ]
机构
[1] Mahidol Univ, Dept Obstet & Gynecol, Fac Med Siriraj Hosp, 2 Prannok Rd, Bangkok 10700, Thailand
[2] Mahidol Univ, Fac Med Siriraj Hosp, Div Clin Epidemiol, Bangkok, Thailand
关键词
abdominal circumference; algorithmic birth weight prediction; mid-upper arm circumference; symphysis-fundal height; ultrasound; SYMPHYSIS-FUNDAL HEIGHT; FETAL WEIGHT; SONOGRAPHIC ESTIMATION; RISK-FACTORS; DELIVERY; GROWTH; LABOR; TERM; MACROSOMIA; ACCURACY;
D O I
10.1515/jpm-2018-0347
中图分类号
R71 [妇产科学];
学科分类号
100211 ;
摘要
Objective: To derive and validate a population-specific multivariate approach for birth weight (BW) prediction based on quantitative intrapartum assessment of maternal characteristics by means of an algorithmic method in low-risk women. Methods: The derivation part (n =200) prospectively explored 10 variables to create the best-fit algorithms (70% correct estimates within +/- 10% of actual BW) for prediction of BW at term; vertex presentation with engagement. The algorithm was then cross validated with samples of unrelated cases (n =280) to compare the accuracy with the routine abdominal palpation method. Results: The best-fit algorithms were parity-specific. The derived simplified algorithms were (1) BW (g) = 100 [(0.42 x symphysis-fundal height (SFH; cm)) + gestational age at delivery (GA; weeks) - 25] in nulliparous, and (2) BW (g) = 100 [(0.42 x SFH (cm)) + GA - 23] in multiparous. Cross validation showed an overall 69.3% accuracy within +/- 10% of actual BW, which exceeded routine abdominal palpation (60.4%) (P = 0.019). The algorithmic BW prediction was significantly more accurate than routine abdominal palpation in women with the following characteristics: BW 2500-4000 g, multiparous, pre-pregnancy weight <50 kg, current weight <60 kg, height <155 cm, body mass index (BMI) <18.5 kg/m(2), cervical dilatation 3-5 cm, station <0, intact membranes, SFH 30-39 cm, maternal abdominal circumference (mAC) <90 cm, mid-upper arm circumference (MUAC) <25 cm and female gender of the neonates (P < 0.05). Conclusion: An overall accuracy of term BW prediction by our simplified algorithms exceeded that of routine abdominal palpation.
引用
收藏
页码:643 / 650
页数:8
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