The assessment of gestational age: a comparison of different methods from a malaria pregnancy cohort in sub-Saharan Africa

Unger, Holger W.; Thriemer, Kamala; Ley, Benedikt; Tinto, Halidou; Traoré, Maminata; Valéa, Innocent; Tagbor, Harry; Antwi, Gifty; Gbekor, Prosper; Nambozi, Michael; Kabuya, Jean-Bertin; Mulenga, Modest; Mwapasa, Victor; Chapotera, Gertrude; Madanitsa, Mwayiwawo; Rulisa, Stephen; Crop, Maaike De; Claeys, Yves; Ravinetto, Raffaella; D’Alessandro, Umberto

doi:10.1186/s12884-018-2128-z

Cited by 30 publications

(38 citation statements)

References 28 publications

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“…FL measurement was obtained in a plane where the femoral diaphysis was fully visible, with calipers placed on the both ends. All measurements were done according to specific standard operating procedures [31,32]. Gestational age in complete weeks was automatically derived from the four anthropometric measurements according to Hadlock formula [32,33]…”

Section: Ultrasoundmentioning

confidence: 99%

Fetal biometry assessment with Intergrowth 21st’s and Salomon’s equations in rural Burkina Faso

Bihoun

Zango

Traoré-Coulibaly

et al. 2020

BMC Pregnancy Childbirth

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Background: Ultrasound scanning during the 2nd or the 3rd trimester of pregnancy for fetal size disturbances screening is heavily dependent of the choice of the reference chart. This study aimed to assess the agreement of Salomon and the Intergrowth 21st equations in evaluating fetal biometric measurements in a rural area of Burkina Faso, and to measure the effect of changing a reference chart. Methods: Data collected in Nazoanga, Burkina Faso, between October 2010 and October 2012, during a clinical trial evaluating the safety and efficacy of several antimalarial treatments in pregnant women were analyzed. We included singleton pregnancies at 16-36 weeks gestation as determined by ultrasound measurements of fetal bi-parietal diameter (BPD), head circumference (HC), abdominal circumference (AC) and femur length (FL). Expected mean and standard deviation at a given gestational age was computed using equations from Salomon references and using Intergrowth 21st standard. Then, z-scores were calculated and used subsequently to compare Salomon references with Intergrowth 21st standards. Results: The analysis included 276 singleton pregnancies. Agreement was poor except for HC: mean difference − 0.01, limits of agreement − 0.60 and 0.59. When AC was used as a surrogate of fetal size, switching from the reference of Salomon to the standards of Intergrowth 21st increased ten times the proportion of fetuses above the 90th percentile: 2.9 and 31.2%, respectively. Mean differences were larger in the third trimester than in the second trimester. However, agreement remained good for HC in both trimesters. Difference in the proportion of AC measurements above the 90th percentile using Salomon and Intergrowth 21st equations was greater in the second trimester (2.6 and 36.3%, respectively) than in the third trimester (3.5 and 19.8%, respectively). The greatest difference between the two charts was observed in the number of FL measurements classified as large in the second trimester (6.8 and 54.2%, using Salomon and Intergrowth 21st equations, respectively). Conclusion: The agreement between Intergrowth 21st and Salomon equations is poor apart from HC. This would imply different clinical decision regarding the management of the pregnancy.

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Section: Ultrasoundmentioning

confidence: 99%

Fetal biometry assessment with Intergrowth 21st’s and Salomon’s equations in rural Burkina Faso

Bihoun

Zango

Traoré-Coulibaly

et al. 2020

BMC Pregnancy Childbirth

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“…Similar, study also supported by Unger H et al about gestational age group. [11] Gestational age in India is almost invariably confirmed by using earlyfirst-trimester ultrasound scanning, high survival rates are unlikely to reflect an inappropriate attribution of a more mature gestational age. Additionally, our data consistently reveal that early-term birth is associated with poorer survival, health, educational, and social outcomes.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Preterm Induction of Labour

Agrawal¹,

Mande²,

Rachakonda³

2020

IJISRT

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Worldwide 20-30% of labour cases are induced. We conducted an analysis to evaluate the success of labour induction for indicated preterm birth A prospective observational study was conducted among 50 patients admitted in the Department of OBGY, MGM Medical College and Hospital, Aurangabad from 1st March 2019 to 31st March 2020. There was a total of 50 deliveries during this period. The preterm induction majorly includes 20-34 years as this is the commonest reproductive age group seen in our hospital. More number of Hindus underwent induction. Multigravida requires induction more as compared to primigravida. More number of patients were induced between 32-36 weeks, reason being PPROM, severe preeclampsia, IUD and severe FGR. Vaginal delivery is more likely irrespective of bishop score. Induction of labour remains relevant obstetrics procedure and its outcome will depend on proper choice of patients and close intrapartum monitoring

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“…(4) There are different methods of estimating GA. During the antenatal period, GA is estimated using the rst day of the last menstrual period (LMP) and ultrasonography. (5) LMP is a common method to assess GA if the menstrual cycle is regular. However, in the case of an irregular cycle, LMP may not be an accurate method to estimate the GA. Ultrasound (US) examination is considered to be a gold standard for dating, (5) however, dating using US is considered accurate when it is carried out in the rst trimester with a variation of ± 10 days.…”

Section: Introductionmentioning

confidence: 99%

Relationship Between Foot Length And Gestational Age In Pakistan

Tikmani¹,

Roujani²,

Azam³

et al. 2020

Preprint

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Abstract Background: Neonatal mortality in preterm live births is high. Therefore, knowledge of the gestational age (GA) at birth is crucial for the management and predicting prognosis of a newborn. Common methods for estimating GA such as the last menstrual period, ultrasonography, and post-natal Ballard scoring have some limitations. This study aimed to determine the relationship between foot length and GA and to develop a regression equation for predicting GA of the neonates born in Pakistan. Methods: Data for this analysis were extracted from the hospital files of eligible women by trained study midwives. Midwives were also trained in performing the Ballard examination and taking foot length using a disposable measuring tape within an hour of the birth. The measurement was taken from the mid-point of the heel to the end of the longest toe. The GA was calculated using an android-based GA calculator, which used a report of last menstrual period, ultrasound examination, and Ballard examination. The data were analyzed using SPSS version 19. Scatter plots were constructed to assess the linearity and co-efficient of determination and the correlation was calculated. Simple and Multiple Linear regression was used to construct predicting equations for GA.Results: Both foot length and GA were available for 1542 cases and were analyzed. The median GA was 34.5 weeks with an interquartile range (IQR 4.7) and the median foot length was 7 cm (IQR 1.4). There was a positive linear relationship between foot length and GA (r2 81.7%, p-value <0.001). Stratified analysis showed an r2 of 81.7% for males and 81.6% for females. The r2 for stillbirths was 84.1% and, 82.3% for live births. The r2 for macerated stillbirths was 88.6% and 90.6% for fresh stillbirths. Conclusion: In resource poor settings, the use of foot length can estimate GA in both live births and stillbirths and can easily identify preterm infants to initiate early management.

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The assessment of gestational age: a comparison of different methods from a malaria pregnancy cohort in sub-Saharan Africa

Cited by 30 publications

References 28 publications

Fetal biometry assessment with Intergrowth 21st’s and Salomon’s equations in rural Burkina Faso

Fetal biometry assessment with Intergrowth 21st’s and Salomon’s equations in rural Burkina Faso

Analysis of Preterm Induction of Labour

Relationship Between Foot Length And Gestational Age In Pakistan

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