Related Experiment Video

Updated: Oct 1, 2026

A Common Marmoset Model of Mother-Infant Intervention for Breastfeeding Disorders in the Presence of Paternal Inhibition and Maternal Neglect
05:04

A Common Marmoset Model of Mother-Infant Intervention for Breastfeeding Disorders in the Presence of Paternal Inhibition and Maternal Neglect

Published on: September 22, 2023

Hydration in the first 24 h of postnatal life in normal infants born vaginally or by caesarean section

D B Cheek, J Wishart, A H MacLennan

    Early Human Development
    |December 1, 1982
    PubMed

    A total of 65 infants, 48 born vaginally and 17 by segment caesarean section, were studied prior to labour for extracellular volume (ECV) (corrected bromide space) and total body water (TBW) (deuterium space) during the first 24 h of postnatal life. The infants were mature and growth retardation excluded. A 'heel stick' blood sample was taken for micro determination of Br and urine for 2H2O concentration. ECV varied from 343 +/- 27 ml/kg at 6 h to 358 +/- 21 ml/kg at 24 h and TBW was 75.5 +/- 3.4% of body weight. Contrary to current opinion, neither TBW nor cell hydration differed in infants born by caesarean section compared with those born vaginally. Such modern methodology to study infant body hydration and the critical assessment of growth and maturity demonstrates that hydration during the first 24 h of life is relatively stable and is not affected by the mode of delivery.

    More Related Videos

    Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats04:12

    Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats

    Published on: March 28, 2025

    Development of a Neonatal Piglet Acute Lung Injury Model Recreating the Early Environment of Preterm Infant Lungs08:58

    Development of a Neonatal Piglet Acute Lung Injury Model Recreating the Early Environment of Preterm Infant Lungs

    Published on: October 31, 2025

    Related Concept Videos

    Fetal Circulation01:14

    Fetal Circulation

    Fetal circulation is a unique system that facilitates the exchange of gases, nutrients, and waste products between the developing fetus and the mother. This intricate process takes place through a special organ called the placenta.
    Two umbilical arteries transport blood from the fetus to the placenta. At the placenta, the blood absorbs oxygen and nutrients while simultaneously eliminating waste products. This oxygen-enriched and nutrient-rich blood then returns to the fetus through one...
    Body Water Content and Fluid Compartments01:19

    Body Water Content and Fluid Compartments

    Life's biochemical processes occur within aqueous solutions. Solutes are substances that are dissolved within these solutions. The human body contains a variety of solutes, which can differ across various body parts. These can encompass proteins—such as those responsible for clotting and carbohydrate transport—as well as electrolytes. In medicine, an electrolyte is often described as a mineral ion derived from a salt possessing an electric charge. Examples include sodium ions (Na+) and chloride...
    Regulation of Water Intake01:25

    Regulation of Water Intake

    Osmolality refers to the number of solute particles per kilogram of solvent in a solution. Plasma osmolality specifically indicates the total number of solute particles per kilogram of water in blood plasma. This value reflects the body's hydration status and is tightly regulated through mechanisms controlling water intake and output. While water consumption is a conscious decision, the body has intrinsic regulatory systems to maintain fluid balance. Dehydration, a state of water deficit...
    Parentral Nutrition: Centeral and Peripheral Parental Nutrition01:27

    Parentral Nutrition: Centeral and Peripheral Parental Nutrition

    Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
    PN can be administered through two primary routes:
    1. Central Parenteral Nutrition (CPN):
    CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
    Development of Human Microbiota01:30

    Development of Human Microbiota

    The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from the skin...
    Development of the Oral Microbiota01:28

    Development of the Oral Microbiota

    The establishment of the oral microbiome begins before birth, challenging the long-held belief that the fetal oral cavity is sterile. The presence of oral microbes such as Streptococcus and Fusobacterium in amniotic fluid suggests that microbial exposure may occur in utero, potentially through translocation from the maternal oral or gastrointestinal tract. This early colonization primes the neonatal immune system and sets the stage for subsequent microbial succession. Maternal health,...