Pharmacokinetics and therapeutic drug monitoring of psychotropic drugs in pediatrics

Simona Pichini, Esther Papaseit, Xavier Joya, Oriol Vall, Magí Farré, Oscar Garcia-Algar, Rafael De Latorre

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Resum

Therapeutic drug monitoring (TDM) in pediatrics (0-14 years) is especially important because the absorption, distribution, metabolism, and excretion of drugs and drug pharmacokinetic profiles can be different from that of the adult population. In this context, several parameters like half-life of drug elimination from the body (t1/2), peak plasma concentration (Cmax), area under the curve, clearance (CL), Tmax, and dose/concentration relationship in children may differ from adults. Hence, the knowledge of pharmacokinetic parameters and therapeutic and toxic ranges of drug concentrations may help the clinicians to optimize drug treatment regimens in the pediatric population. TDM of psychotropic drugs requires particular attention for the pharmacological and clinical consequences of nonadequate dose use, lack in the compliance, and overdoses with possible toxic effects. Psychoactive drugs such as benzodiazepines, antiepileptic drugs, tricyclic antidepressants, selective serotonin reuptake inhibitors, antipsychotic drugs, psychostimulants (attention-deficit hyperactivity disorder drugs), opioid analgesics, and antimigraine drugs are a heterogeneous group. These drugs are subject to interindividual variability, and therefore, the usefulness of TDM for these drugs has to be assessed individually. Because of the occurrence of comorbid pathologies, including psychiatric disorders, the use of combined pharmacotherapy is not uncommon. As a consequence, these patients may be at risk from a number of potential drug-drug interactions. The implementation of TDM in pediatric population is more difficult than in adults because some sampling procedures are invasive and cause discomfort in children, and additionally, they require the cooperation of the patient. Several examples will be provided where the use of alternative matrices, such as saliva, is proposed to minimize inconvenience and patient discomfort. Copyright © 2009 by Lippincott Williams & Wilkins.
Idioma originalAnglès
Pàgines (de-a)283-318
RevistaTherapeutic Drug Monitoring
Volum31
Número3
DOIs
Estat de la publicacióPublicada - 1 de juny 2009

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