Drug-induced metabolic disorders and parenteral nutrition in the intensive care unit: a pharmaceutical and metabolic perspective

Since its inception, the field of parenteral nutrition has continued to evolve requiring the expertise of several health care disciplines. This feature has made nutrition support unique among clinical subspecialties. As a member of this team, the pharmacist plays a critical role in the provision of sterile admixtures, compatible nutritional formulations, and cost-effective, therapeutically equivalent strategies. The pharmacist has become more involved in the clinical care of the patient, with particular emphasis on the development of drug-induced metabolic disorders. The multitude of drugs prescribed to hospitalized patients increases the potential for serious metabolic disturbances. This is especially true in the critical care setting where sudden changes in metabolism (e.g., acid-base homeostasis, fluid and electrolyte balance) may result in profoundly negative effects. The critical care setting also represents the most sensitive period of hospitalization where even subtle changes in metabolic homeostasis may assume major clinical significance. Early recognition of offending agents and the institution of appropriate intervention may avert serious iatrogenic diseases. The nutrition support team is in a unique position to address many such disorders through selective manipulation of the various components in the parenteral nutrient admixture. The ability of the pharmacist to recognize the development of drug-induced metabolic disorders lends further support for clinical pharmacy in nutrition support services.

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