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Related Concept Videos

Drug Dosing: Infants and Children01:29

Drug Dosing: Infants and Children

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Pediatric patient dosages diverge from adults due to disparities in body surface area, total body water, and extracellular fluid per kilogram of body weight. The dosing regimen considers the variations in pharmacokinetics and pharmacology across distinct age groups, encompassing preterm newborns, infants, young children, older children, and adolescents. Calculation of pediatric patient doses is predicated on determining body surface area, which exhibits a superior correlation with the child's...
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Pharmacokinetics in Pediatric Patients: Drug Excretion01:26

Pharmacokinetics in Pediatric Patients: Drug Excretion

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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...
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Dosage Interval and Administration Route: Determination Methods01:19

Dosage Interval and Administration Route: Determination Methods

538
A medication’s effectiveness largely depends on its appropriate dosage and the route of administration. Dosage ensures that a sufficient drug concentration is maintained in the bloodstream to elicit the desired therapeutic effect without causing toxicity. The route of administration affects the drug's bioavailability, rate of absorption, and onset of action, which are crucial for achieving optimal therapeutic outcomes. Drug dosage calculations are critical to tailoring therapy to...
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Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations01:15

Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations

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Gentamicin, an aminoglycoside antibiotic, is commonly administered via intermittent intravenous infusion to treat severe infections. An intermittent one-hour infusion of gentamicin, administered at eight-hour intervals, allows for precise control of plasma drug concentrations, minimizing toxicity while ensuring therapeutic efficacy. Pharmacokinetic principles govern the dynamics of plasma concentrations and can be mathematically described using specific equations.The plasma drug concentration...
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Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption01:23

Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption

882
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...
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Pharmacokinetics in Pediatric Patients: Drug Distribution01:17

Pharmacokinetics in Pediatric Patients: Drug Distribution

508
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,...
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Updated: Apr 17, 2026

Quantitative Polymerase Chain Reaction-based Analyses of Murine Intestinal Microbiota After Oral Antibiotic Treatment
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New antibiotic dosing in infants.

Leslie C Pineda1, Kevin M Watt2

  • 1Department of Pediatrics, Duke University Medical Center, Duke University, Box 2739, 2424 Erwin Road, Hock Plaza Suite 504, Durham, NC 27710, USA.

Clinics in Perinatology
|February 14, 2015
PubMed
Summary

Antibiotic dosing for infants in neonatal intensive care units is improving. Newer minimal-risk methods now provide crucial pharmacokinetic data and dosing regimens for key antibiotics in neonates.

Keywords:
AntibioticsDosingInfantsNeonatesPharmacokineticsPrematurity

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Area of Science:

  • Neonatal pharmacology
  • Pediatric pharmacokinetics
  • Infectious disease in neonates

Background:

  • Neonatal intensive care unit (NICU) infants often receive antibiotics to prevent infections.
  • Current antibiotic dosing is frequently based on adult data, risking toxicity and inefficacy due to infants' unique physiology.
  • Developmental changes in infant physiology necessitate specialized dosing strategies.

Purpose of the Study:

  • To address the challenges in antibiotic dosing for infants in the NICU.
  • To highlight emerging technologies enabling safer and more effective antibiotic administration in neonates.
  • To present updated pharmacokinetic data and dosing regimens for commonly used antibiotics in infants.

Main Methods:

  • Utilizing minimal-risk study designs for infant drug evaluation.
  • Employing ultra-low-volume assays for precise measurements.
  • Leveraging pharmacokinetic modeling and simulation (PBPK) for dose optimization.
  • Implementing opportunistic drug protocols for data collection.

Main Results:

  • Pharmacokinetic data and optimized dosing regimens are now available for infants.
  • Specific antibiotics with updated infant data include ampicillin, clindamycin, meropenem, metronidazole, and piperacillin/tazobactam.
  • Minimal-risk study designs facilitate the acquisition of reliable infant drug data.

Conclusions:

  • Emerging technologies are revolutionizing antibiotic pharmacokinetics in infants.
  • Accurate dosing regimens are crucial for preventing infant infections while minimizing drug-related harm.
  • Updated data supports safer and more effective antibiotic use in neonatal populations.