Adverse drug reactions from birth to early childhood

A Gupta1, L K Waldhauser

  • 1Department of Pediatrics, Hospital for Sick Children, University of Toronto, Ontario, Canada.

Insights

Infants and children face unique drug risks, with adverse drug reactions impacting development. Continued vigilance is crucial to prevent and manage these reactions, learning from past errors to protect child health.

Area of Science:

  • Pediatric Pharmacology
  • Neonatal and Infant Health
  • Drug Safety and Development

Background:

  • Neonates and infants possess unique physiological characteristics differentiating them from older children and adults.
  • Drug exposure during intrauterine, neonatal, and infancy periods can lead to significant immediate, delayed, and long-term developmental consequences.
  • Pharmacotherapy in neonates and infants is often complex, increasing the risk of adverse drug reactions (ADRs) due to their fragility and illness severity.

Purpose of the Study:

  • To highlight the distinct nature and implications of adverse drug reactions in neonates and infants.
  • To emphasize the differences in ADRs experienced by pediatric populations compared to adults.
  • To underscore the ongoing need for vigilance in preventing and managing pediatric adverse drug reactions.

Main Methods:

  • Review of existing literature on pediatric adverse drug reactions.
  • Analysis of historical drug safety incidents involving children.
  • Discussion of the unique pharmacokinetic and pharmacodynamic considerations in pediatric drug therapy.

Main Results:

  • Adverse drug reactions in infants and children can have profound and unpredictable effects on neurologic and somatic development.
  • Differences in morphology, disease processes, and treatments lead to a distinct spectrum of ADRs in pediatric populations.
  • Despite advancements, children continue to be vulnerable to medication misadventures, including historical contaminants like diethylene glycol.

Conclusions:

  • Pediatric adverse drug reactions require specialized attention due to unique patient factors and developmental implications.
  • Continuous vigilance, education, and learning from past drug safety failures are essential for improving child health outcomes.
  • Healthcare professionals must remain proactive in the prevention, monitoring, and treatment of adverse drug reactions in neonates and infants.

Related Concept Videos

Factors Affecting Drug Response: Overview01:21

Factors Affecting Drug Response: Overview

When it comes to infants and young children, they are typically administered smaller doses of medication in comparison to adults. This is primarily because their organ functions still need to fully develop, meaning their bodies are not as efficient at metabolizing or eliminating drugs. Additionally, their blood-brain barrier is more permeable than in adults. As a result, high concentrations of drugs can easily penetrate the central nervous system (CNS), potentially leading to neurological...
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...
Drug Toxicity: Overview01:00

Drug Toxicity: Overview

Drug toxicity quantifies the harm a compound causes to an organism, varying by dose and potentially impacting whole systems or specific organs like the liver. Toxic reactions may arise from venomous insect or spider bites, with effects ranging from mild symptoms to severe outcomes such as brain damage or death. Common forms of acute poisoning include ethanol intoxication and overdose of pain or fever medications, with substances like GHB and heroin being particularly lethal at doses close to...
Drug Toxicity: Risk factors01:24

Drug Toxicity: Risk factors

Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
Drug Toxicity: Allergic Reactions01:30

Drug Toxicity: Allergic Reactions

Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...
Drug toxicity: Idiosyncratic Reactions01:16

Drug toxicity: Idiosyncratic Reactions

Idiosyncratic drug reactions represent abnormal chemical responses that vary significantly among individuals, ranging from extreme sensitivity to low doses to insensitivity to high doses. These reactions often occur due to the drug's covalent binding with serum proteins, forming a foreign hapten that triggers an immunotoxicological response. The variability in drug reactions has a strong pharmacogenetic foundation, with genetic differences crucial in how individuals metabolize drugs. For...