The coming of (gestational) age for preterm infants

Sola, Augusto; Chow, Lily C.

doi:10.1016/s0022-3476(99)70011-9

Cited by 6 publications

(6 citation statements)

References 29 publications

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“…Bias associated with estimating GA is critically important around the limits of viability where decisions must be made regarding the administration or withholding of intensive care and for the provision of antenatal corticosteroids during preterm labour [ 4 , 46 ]. By quantifying biases associated with methods used in the absence of ultrasound CRL before 14 weeks gestation, our results provide guidance regarding the level of confidence that can be conferred to GA estimates and highlight the limitations of using these methods to estimate the GA of preterm and/or growth-restricted newborns [ 4 ].…”

Section: Discussionmentioning

confidence: 99%

“…Accurate determination of gestational age (GA) is essential for the provision of appropriate obstetric and neonatal care, including treatment of infections during pregnancy with drugs that may be contraindicated in the first trimester, detection of growth restriction and post-term pregnancies (≥42 weeks gestation), provision of antenatal corticosteroids during preterm labour, and decisions regarding whether to administer or withhold intensive care to extremely premature infants [ 1 – 4 ]. Fetal crown-rump length (CRL) measured by ultrasound between 7 +0 and 13 +6 weeks gestation is the recommended method for precise dating of spontaneously conceived pregnancies [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

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Estimating Gestational Age in Late Presenters to Antenatal Care in a Resource-Limited Setting on the Thai-Myanmar Border

et al. 2015

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Estimating gestational age in resource-limited settings is prone to considerable inaccuracy because crown-rump length measured by ultrasound before 14 weeks gestation, the recommended method for estimating gestational age, is often unavailable. Judgements regarding provision of appropriate obstetric and neonatal care are dependent on accurate estimation of gestational age. We determined the accuracy of the Dubowitz Gestational Age Assessment, a population-specific symphysis-fundal height formula, and ultrasound biometry performed between 16 and 40 weeks gestation in estimating gestational age using pre-existing data from antenatal clinics of the Shoklo Malaria Research Unit on the Thai-Myanmar border, where malaria is endemic. Two cohorts of women who gave birth to live singletons were analysed: 1) 250 women who attended antenatal care between July 2001 and May 2006 and had both ultrasound crown-rump length (reference) and a Dubowitz Gestational Age Assessment; 2) 975 women attending antenatal care between April 2007 and October 2010 who had ultrasound crown-rump length, symphysis-fundal measurements, and an additional study ultrasound (biparietal diameter and head circumference) randomly scheduled between 16 and 40 weeks gestation. Mean difference in estimated newborn gestational age between methods and 95% limits of agreement (LOA) were determined from linear mixed-effects models. The Dubowitz method and the symphysis-fundal height formula performed well in term newborns, but overestimated gestational age of preterms by 2.57 weeks (95% LOA: 0.49, 4.65) and 3.94 weeks (95% LOA: 2.50, 5.38), respectively. Biparietal diameter overestimated gestational age by 0.83 weeks (95% LOA: -0.93, 2.58). Head circumference underestimated gestational age by 0.39 weeks (95% LOA: -2.60, 1.82), especially if measured after 24 weeks gestation. The results of this study can be used to quantify biases associated with alternative methods for estimating gestational age in the absence of ultrasound crown-rump length to inform critical clinical judgements in this population, and as a point of reference elsewhere.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Estimating Gestational Age in Late Presenters to Antenatal Care in a Resource-Limited Setting on the Thai-Myanmar Border

et al. 2015

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“…[1][2][3][4][5] Knowledge of accurate GA is helpful in identification of infant's at risk for mortality and morbidity such as RDS, hypoglycemia just after birth, septicemia, feeding problem or asphyxia. [6][7][8] We can measure GA by LMP, early USG report or by physical and neuromuscular characteristic including Dubowitz chart, Parkins method, Ballard method or New Ballard Score (NBS) chart. [9][10][11][12][13][14][15][16][17] New Ballard Score is already worldwide accepted up to 4 th day of life.…”

Section: Introductionmentioning

confidence: 99%

Validity of New Ballard Score Untill 7th Day of Postnatal Life In Preterm Neonate

Zahan

Mosleh

Akter³

et al. 2017

Bangladesh J Child Health

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“…Often, the estimated gestational age determines the feasibility of the treatment. Presently, there are suitable methods to determine the gestational age, but they depend on adequate prenatal attendance and ultrasonic evaluation, achieved in the first trimester of gestation [2]. In many situations, for a variety of reasons [3], the needed information is not available.…”

Section: Introductionmentioning

confidence: 99%

“…1. Furthermore, technological evolution has provided new clinical possibilities, increasing the success rate in premature newborn treatment [2]. Therefore, knowledge of gestational age has become very important and it is evident that a non-invasive and more precise method of determining this age is needed.…”

Section: Introductionmentioning

confidence: 99%

Image Analysis of Newborn Plantar Surface for Gestational Age Determination

Bellon

Severich

Silva³

et al. 2003

Lecture Notes in Computer Science

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Abstract. We present a computational approach to support gestational age determination of premature newborns. This knowledge is fundamental to guide postnatal treatment and increase survival chances. However, current approaches are both invasive and do not generate precise results. This paper presents an original and non-invasive method to determine the gestational age based on information supplied by plantar surface images. These images present many details and patterns but to date have not received attention from the image processing community. We provide a computational tool with suitable facilities to allow the image analysis, either automatically or user-driven. Besides its importance to Neonatology, this work represents a contribution of Computer Vision concepts to Medical Imaging. The experimental results confirm the relationship between the plantar surface features and newborn gestational age.

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The coming of (gestational) age for preterm infants

Cited by 6 publications

References 29 publications

Estimating Gestational Age in Late Presenters to Antenatal Care in a Resource-Limited Setting on the Thai-Myanmar Border

Estimating Gestational Age in Late Presenters to Antenatal Care in a Resource-Limited Setting on the Thai-Myanmar Border

Validity of New Ballard Score Untill 7th Day of Postnatal Life In Preterm Neonate

Image Analysis of Newborn Plantar Surface for Gestational Age Determination

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