Population-Based Placental Weight Ratio Distributions

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منابع مشابه

Population-Based Placental Weight Ratio Distributions

The placental weight ratio (PWR) is a health indicator that reflects the balance between fetal and placental growth. The PWR is defined as the placental weight divided by the birth weight, and it changes across gestation. Its ranges are not well established. We aimed to establish PWR distributions by gestational age and to investigate whether the PWR distributions vary by fetal growth adequacy,...

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Paternal age, placental weight and placental to birthweight ratio: a population-based study of 590,835 pregnancies.

STUDY QUESTION Is the age of the father associated with placental weight or the ratio of placental weight to birthweight? SUMMARY ANSWER Placental weight and placental to birthweight ratio increased according to increasing paternal age, also after adjustment for maternal age. WHAT IS KNOWN ALREADY High paternal age and also high placental to birthweight ratio have been associated with adver...

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Placental weight and birth weight to placental weight ratio in monochorionic and dichorionic growth-restricted and non-growth-restricted twins

OBJECTIVE: The aim of the present study was to compare the placental weight and birth weight/placental weight ratio for intrauterine growth-restricted and non-intrauterine growth-restricted monochorionic and dichorionic twins. METHODS: This was a retrospective analysis of placentas from twin pregnancies. Placental weight and the birth weight/placental weight ratio were compared in intrauterin...

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Placental Adaptation: What Can We Learn from Birthweight:Placental Weight Ratio?

Appropriate fetal growth relies upon adequate placental nutrient transfer. Birthweight:placental weight ratio (BW:PW ratio) is often used as a proxy for placental efficiency, defined as the grams of fetus produced per gram placenta. An elevated BW:PW ratio in an appropriately grown fetus (small placenta) is assumed to be due to up-regulated placental nutrient transfer capacity i.e., a higher nu...

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ژورنال

عنوان ژورنال: International Journal of Pediatrics

سال: 2014

ISSN: 1687-9740,1687-9759

DOI: 10.1155/2014/291846