Related Experiment Video

Updated: Jul 14, 2026

Biochemical Measurement of Neonatal Hypoxia
13:13

Biochemical Measurement of Neonatal Hypoxia

Published on: August 24, 2011

Premature infants: analysis of serum phosphate during the first 4 weeks of life

Nahed El Hassan1, Rita Ryan, Laroia Nirupama

  • 1Department of Pediatrics, Division of Neonatology, College of Medicine, University of Arkansas Medical School, Arkansas Children's Hospital, Little Rock, Arkansas, USA.

American Journal of Perinatology
|May 23, 2007
PubMed

Insights

This study established phosphate norms for premature infants (500-1500g) during their first month. Lower phosphate levels were observed in lower birthweight neonates, suggesting potential use as an acuity marker.

Area of Science:

  • Neonatal Medicine
  • Pediatric Endocrinology
  • Biochemistry

Background:

  • Accurate phosphate level monitoring is crucial for neonatal care.
  • Establishing normative data for premature infants is essential for early detection of metabolic disturbances.

Purpose of the Study:

  • To establish phosphate reference ranges for neonates with birthweights between 500 and 1500 grams during the first four weeks of life.
  • To compare phosphate levels between neonates in different birthweight categories (500-1000g vs. 1001-1500g).

Main Methods:

  • Prospective study involving 52 neonates divided into two birthweight groups (A: 500-1000g, B: 1001-1500g).
  • Daily phosphate level measurements from day 1 to 5, followed by weekly measurements until week 4.
  • Statistical analysis to compare phosphate levels between the two groups.

Main Results:

  • Phosphate levels were generally lower in the lower birthweight group (Group A) compared to the higher birthweight group (Group B).
  • This difference was statistically significant, excluding the first two days of life.
  • Normative phosphate data were generated for the first four weeks of life in this cohort.

Conclusions:

  • The study provides initial phosphate norms for low birthweight neonates.
  • Lower phosphate levels in very low birthweight infants may indicate specific metabolic needs or risks.
  • Further research is warranted to explore phosphate as a marker of neonatal acuity and the impact of phosphate repletion.

More Related Videos

Absolute Quantitation of Inositol Pyrophosphates by Capillary Electrophoresis Electrospray Ionization Mass Spectrometry09:22

Absolute Quantitation of Inositol Pyrophosphates by Capillary Electrophoresis Electrospray Ionization Mass Spectrometry

Published on: August 13, 2021

Assaying for Inorganic Polyphosphate in Bacteria07:20

Assaying for Inorganic Polyphosphate in Bacteria

Published on: January 21, 2019

Related Concept Videos

Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

Pharmacokinetics in Pediatric Patients: Drug Metabolism

In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses a challenge in...
Pharmacokinetics in Pediatric Patients: Drug Distribution01:17

Pharmacokinetics in Pediatric Patients: Drug Distribution

Drug distribution in the pediatric population exhibits unique challenges and considerations due to the physiological differences between children, particularly neonates and infants, and adults. A crucial aspect of pediatric pharmacology is understanding how these differences impact the pharmacokinetics of various drugs, necessitating age-specific dosing strategies to ensure efficacy and safety.Neonates and infants have a higher total body water content, ~75%–90% of their body weight, compared...
Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption01:23

Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption

Understanding the physiological differences in the pediatric population is crucial for effective pharmacotherapy. Neonates, infants, and children exhibit significant variations in gastric pH, gastric emptying time, intestinal transit time, and biliary function. These variations profoundly affect oral drug absorption, necessitating a nuanced approach to pediatric dosing.Neonates present with a unique physiological profile, having a gastric pH greater than 4 and faster and more irregular gastric...
Pharmacokinetics in Pediatric Patients: Drug Excretion01:26

Pharmacokinetics in Pediatric Patients: Drug Excretion

In pediatric medicine, understanding the renal function and drug elimination nuances is crucial for administering safe and effective treatments. Newborns, in particular, display markedly slower renal functions than adults, profoundly affecting how drugs are cleared from their bodies. This slower drug clearance requires clinicians to extend the dosing intervals for many medications to prevent drug accumulation and toxicity while ensuring therapeutic efficacy.One key area where these adjustments...
Roles of Electrolytes: Calcium and Phosphate01:27

Roles of Electrolytes: Calcium and Phosphate

Calcium and phosphate are essential electrolytes in the human body, with calcium being the most abundant mineral. Around 99% of the body's calcium is stored in the skeleton and teeth, forming a crystal lattice of mineral salts in combination with phosphates. Calcium plays crucial roles in various bodily functions such as blood clotting, neurotransmitter release, muscle tone maintenance, and nervous and muscle tissue excitability.
The calcium concentration in blood plasma is primarily regulated...
Introduction to Electrolytes01:33

Introduction to Electrolytes

In humans, electrolytes play a vital role in various physiological processes. Balancing electrolyte levels is essential for normal body functions; their imbalance can be life-threatening. The major electrolytes include sodium, potassium, chloride, calcium, phosphate, and bicarbonate. They are primarily involved in physiological processes, such as nerve signal transmission, membrane trafficking, muscle contraction, buffering body fluids, and balancing water levels in the body.
Role of Sodium
One...