Book contents
- Frontmatter
- Contents
- List of contributors
- Preface
- Acknowledgments
- List of abbreviations
- 1 Fetal nutrition
- 2 Determinants of intrauterine growth
- 3 Aspects of fetoplacental nutrition in intrauterine growth restriction and macrosomia
- 4 Postnatal growth in preterm infants
- 5 Thermal regulation and effects on nutrient substrate metabolism
- 6 Development and physiology of the gastrointestinal tract
- 7 Metabolic programming as a consequence of the nutritional environment during fetal and the immediate postnatal periods
- 8 Nutrient regulation in brain development: glucose and alternate fuels
- 9 Water and electrolyte balance in newborn infants
- 10 Amino acid metabolism and protein accretion
- 11 Carbohydrate metabolism and glycogen accretion
- 12 Energy requirements and protein-energy metabolism and balance in preterm and term infants
- 13 The role of essential fatty acids in development
- 14 Vitamins
- 15 Normal bone and mineral physiology and metabolism
- 16 Disorders of mineral, vitamin D and bone homeostasis
- 17 Trace minerals
- 18 Iron
- 19 Conditionally essential nutrients: choline, inositol, taurine, arginine, glutamine and nucleotides
- 20 Intravenous feeding
- 21 Enteral amino acid and protein digestion, absorption, and metabolism
- 22 Enteral carbohydrate assimilation
- 23 Enteral lipid digestion and absorption
- 24 Minimal enteral nutrition
- 25 Milk secretion and composition
- 26 Rationale for breastfeeding
- 27 Fortified human milk for premature infants
- 28 Formulas for preterm and term infants
- 29 Differences between metabolism and feeding of preterm and term infants
- 30 Gastrointestinal reflux
- 31 Hypo- and hyperglycemia and other carbohydrate metabolism disorders
- 32 The infant of the diabetic mother
- 33 Neonatal necrotizing enterocolitis: clinical observations and pathophysiology
- 34 Neonatal short bowel syndrome
- 35 Acute respiratory failure
- 36 Nutrition for premature infants with bronchopulmonary dysplasia
- 37 Nutrition in infants with congenital heart disease
- 38 Nutrition therapies for inborn errors of metabolism
- 39 Nutrition in the neonatal surgical patient
- 40 Nutritional assessment of the neonate
- 41 Methods of measuring body composition
- 42 Methods of measuring energy balance: calorimetry and doubly labelled water
- 43 Methods of measuring nutrient substrate utilization using stable isotopes
- 44 Postnatal nutritional influences on subsequent health
- 45 Growth outcomes of preterm and very low birth weight infants
- 46 Post-hospital nutrition of the preterm infant
- Index
- References
2 - Determinants of intrauterine growth
Published online by Cambridge University Press: 10 December 2009
- Frontmatter
- Contents
- List of contributors
- Preface
- Acknowledgments
- List of abbreviations
- 1 Fetal nutrition
- 2 Determinants of intrauterine growth
- 3 Aspects of fetoplacental nutrition in intrauterine growth restriction and macrosomia
- 4 Postnatal growth in preterm infants
- 5 Thermal regulation and effects on nutrient substrate metabolism
- 6 Development and physiology of the gastrointestinal tract
- 7 Metabolic programming as a consequence of the nutritional environment during fetal and the immediate postnatal periods
- 8 Nutrient regulation in brain development: glucose and alternate fuels
- 9 Water and electrolyte balance in newborn infants
- 10 Amino acid metabolism and protein accretion
- 11 Carbohydrate metabolism and glycogen accretion
- 12 Energy requirements and protein-energy metabolism and balance in preterm and term infants
- 13 The role of essential fatty acids in development
- 14 Vitamins
- 15 Normal bone and mineral physiology and metabolism
- 16 Disorders of mineral, vitamin D and bone homeostasis
- 17 Trace minerals
- 18 Iron
- 19 Conditionally essential nutrients: choline, inositol, taurine, arginine, glutamine and nucleotides
- 20 Intravenous feeding
- 21 Enteral amino acid and protein digestion, absorption, and metabolism
- 22 Enteral carbohydrate assimilation
- 23 Enteral lipid digestion and absorption
- 24 Minimal enteral nutrition
- 25 Milk secretion and composition
- 26 Rationale for breastfeeding
- 27 Fortified human milk for premature infants
- 28 Formulas for preterm and term infants
- 29 Differences between metabolism and feeding of preterm and term infants
- 30 Gastrointestinal reflux
- 31 Hypo- and hyperglycemia and other carbohydrate metabolism disorders
- 32 The infant of the diabetic mother
- 33 Neonatal necrotizing enterocolitis: clinical observations and pathophysiology
- 34 Neonatal short bowel syndrome
- 35 Acute respiratory failure
- 36 Nutrition for premature infants with bronchopulmonary dysplasia
- 37 Nutrition in infants with congenital heart disease
- 38 Nutrition therapies for inborn errors of metabolism
- 39 Nutrition in the neonatal surgical patient
- 40 Nutritional assessment of the neonate
- 41 Methods of measuring body composition
- 42 Methods of measuring energy balance: calorimetry and doubly labelled water
- 43 Methods of measuring nutrient substrate utilization using stable isotopes
- 44 Postnatal nutritional influences on subsequent health
- 45 Growth outcomes of preterm and very low birth weight infants
- 46 Post-hospital nutrition of the preterm infant
- Index
- References
Summary
Size matters
When considering outcomes of pregnancy, size at birth is among the most important characteristics of a successful pregnancy. In addition to duration of pregnancy and the qualitative development of the fetus, the anthropometric size of a newborn baby is of considerable significance. Long before the relatively modern concept of gestational age was well understood, medical personnel recognized and recorded the size, particularly the weight, of newborn babies, and both mortality and morbidity were correlated to birth size. This persists even today, with terms such as “Low Birth Weight” infants, which do not incorporate the concept of duration of pregnancy, as an important descriptor in the public health arena. Similarly, among the first questions asked by parents, is “How much does my baby weigh?,” a reflection of the importance of size in the common understanding of pregnancy.
As a practical issue, clinicians pay most attention to weight, length and head circumference, in part because both scales and rulers are easily available and accurate. Weight is particularly emphasized, in part because the measurement of weight is particularly insensitive to inter-observer measurement error. Other measures, such as surface area, BMI and weights raised to various powers (e.g. wt0.75, wt2, wt/length2) are also in common use, but require more difficult calculation or measurement. The close attention paid to weight is more a reflection of convenience, than biological importance, as other measures may more closely relate to matters of biological importance.
- Type
- Chapter
- Information
- Neonatal Nutrition and Metabolism , pp. 23 - 31Publisher: Cambridge University PressPrint publication year: 2006
References
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