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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

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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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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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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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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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Antimicrobial Effectiveness01:28

Antimicrobial Effectiveness

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The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
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Antimicrobial defined daily dose in neonatal population.

Cristina Villanueva-Bueno1, Elena Montecatine-Alonso1, Francisco Jiménez-Parrilla2

  • 1Department of Pharmacy, Institute of Biomedicine of Seville (IBIS), Hospital Universitario Virgen del Rocío, Sevilla, Spain.

Enfermedades Infecciosas Y Microbiologia Clinica (English Ed.)
|February 5, 2022
PubMed
Summary

This study introduces a new method for measuring antimicrobial consumption in neonates, addressing limitations of the standard defined daily dose (DDD). The developed DDD metric is designed for neonatal populations to improve antimicrobial stewardship.

Keywords:
Antimicrobial consumptionConsumo de antimicrobianosNeonatal antimicrobial prescriptionNeonatologyNeonatologíaPrescripción de antimicrobianos en neonatos

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Area of Science:

  • Neonatal pharmacology
  • Infectious disease epidemiology
  • Drug utilization research

Background:

  • The standard defined daily dose (DDD) metric for antimicrobial consumption has limitations for neonatal patients.
  • Accurate measurement of antimicrobial use in neonates is crucial for effective stewardship.

Purpose of the Study:

  • To design and propose an alternative defined daily dose (DDD) metric specifically for neonatal populations.
  • To facilitate accurate monitoring of antimicrobial consumption in neonatal intensive care units.

Main Methods:

  • A novel DDD calculation method was developed using neonate weight and recommended antimicrobial doses for common infections.
  • Data were collected from 4820 neonates across 6 Spanish hospitals over 12 months.
  • The Delphi method was employed to determine the most common infectious indications for antimicrobial use.

Main Results:

  • A total of 4820 neonates were included, with a mean gestational age of 36.72 weeks and mean weight of 2.687 kg.
  • Standardized DDD values (intravenous; oral) were calculated for numerous antimicrobials, including amoxicillin (0.08; 0.08) and vancomycin (0.08; 0.11).
  • Specific DDD values were determined for both restricted and non-restricted antimicrobial agents.

Conclusions:

  • A practical method for measuring antimicrobial DDD in neonatology has been established.
  • This new DDD metric can aid in monitoring antimicrobial consumption within hospital settings.
  • Further validation is recommended before integrating this method into neonatal antimicrobial stewardship programs.