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Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption01:23

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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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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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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...
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Leukotriene modifiers, or cysteinyl leukotriene receptor antagonists, are medications used to manage chronic asthma. These agents target specific inflammatory mediators produced during arachidonic acid metabolism, an essential process in generating inflammation in the body.
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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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Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA
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β-Lactam Allergy in Children.

Ayse Suleyman1, Ahmet İlhan Yararli2, Esra Yucel1

  • 1Department of Pediatrics, Division of Pediatric Allergy and Immunology, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey.

Sisli Etfal Hastanesi Tip Bulteni
|October 29, 2021
PubMed
Summary

Most children with suspected beta-lactam antibiotic allergy can tolerate the drugs, as confirmed by skin and drug provocation tests. Older age and early reactions are risk factors for confirmed allergies, with a small chance of cross-reactivity between penicillin and cephalosporins.

Keywords:
Beta-lactamscross-reactionsdrug allergyskin tests

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Area of Science:

  • Pediatric Allergy and Immunology
  • Clinical Pharmacology
  • Drug Hypersensitivity

Background:

  • Beta-lactam antibiotic allergy is common in children, but many suspected cases are not true allergies.
  • Accurate diagnosis is crucial for appropriate antibiotic selection and management.

Purpose of the Study:

  • To assess clinical and laboratory features of pediatric beta-lactam allergy.
  • To determine cross-reactivity between penicillin and cephalosporins in children.

Main Methods:

  • Diagnosis of beta-lactam allergy was based on skin tests and/or drug provocation tests (DPT).
  • Evaluated reactions to penicillin, ampicillin/amoxicillin, and culprit cephalosporins.

Main Results:

  • 87.7% of children tolerated the suspected culprit beta-lactam drug.
  • Among confirmed allergies, 2/10 showed cross-reactivity between penicillin and cephalosporins.
  • Older age and early-type reactions were risk factors for confirmed beta-lactam allergy.

Conclusions:

  • Skin tests and DPT are valuable for diagnosing beta-lactam allergy and identifying safe alternatives.
  • The majority of children tolerated the drug, indicating low rates of true allergy.
  • A small subset with confirmed allergy may need to avoid all beta-lactams due to cross-reactivity risk.