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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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Surgical interventions for inflammatory bowel disease (IBD), which includes ulcerative colitis and Crohn's disease, are essential in managing symptoms and addressing complications. The selection of surgical procedures is contingent upon the specific conditions and complications that stem from these illnesses.
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Enteral nutrition encompasses various methods of delivering nutrition directly to the gastrointestinal (GI) tract, bypassing traditional oral intake. It is particularly beneficial for patients who cannot eat by mouth but have a functioning digestive system. Key methods include nasointestinal feeding, gastrostomy, and jejunostomy, each suited to different clinical scenarios based on the patient's needs and condition.
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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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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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ASPEN definitions in pediatric intestinal failure.

Biren P Modi1, David P Galloway2, Kathleen Gura3

  • 1Center for Advanced Intestinal Rehabilitation, Department of Surgery, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA.

JPEN. Journal of Parenteral and Enteral Nutrition
|July 21, 2021
PubMed
Summary

Pediatric intestinal failure (PIF) lacks clear definitions, hindering research. This consensus document from ASPEN provides evidence-based definitions for improved study comparisons and patient outcome measurement.

Keywords:
definitionenteral nutritionintestinal failureparenteral nutritionpediatricsshort bowel syndrome

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Area of Science:

  • Pediatric Gastroenterology
  • Clinical Nutrition
  • Medical Consensus

Background:

  • Pediatric intestinal failure (PIF) is a rare condition requiring specialized care.
  • Lack of consensus definitions for PIF hinders research and outcome measurement.
  • Small studies, not large trials, characterize existing PIF research.

Purpose of the Study:

  • To establish evidence-based consensus definitions for pediatric intestinal failure (PIF).
  • To address the lack of standardized terminology in PIF research.
  • To facilitate comparisons between clinical studies and long-term patient outcome measurement.

Main Methods:

  • Development of consensus definitions by the American Society for Parenteral and Enteral Nutrition (ASPEN) PIF Section.
  • Involvement of multidisciplinary clinicians caring for children with intestinal failure.
  • Evidence-based approach to definition creation.

Main Results:

  • The document provides consensus definitions for key terms related to PIF.
  • These definitions aim to standardize terminology in the field.
  • Facilitates consistent reporting and comparison of PIF research.

Conclusions:

  • Standardized definitions are crucial for advancing PIF research.
  • The ASPEN PIF Section's consensus definitions will aid in better understanding and managing pediatric intestinal failure.
  • This effort supports improved clinical study design and patient outcome assessment.