Fatores associados às interações medicamentosas potenciais e aos eventos adversos a medicamentos em uma unidade de terapia intensiva / Factors associated with potential drug interactions and adverse drug events in a Intensive Care Unit.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

Complex pharmacotherapy with multiple medications increases the chances of drug interactions (DI) and adverse drug events (ADE) in patients at intensive care units (ICU). This study aimed to analyze and classify potential drug interactions of the following types: drug-drug and drug-enteral nutrition and also ADE detected during patientshospitalization in the ICU of a teaching hospital; to identify drug adverse events related to DI; and investigate factors associated with DI and ADE. This crosssectional, correlational and retrospective study investigated 299 medical records of patients hospitalized for five or more days in the ICU. Potential DI were identified and classified through the software Drug-Reax. Interactions in prescriptions were identified in three occasions: at 24 hours of hospitalization, at median of stay and at discharge of ICU stay . ADE were identified through the method of intensive monitoring and also adverse drug event trigger. ADE were classified regarding causality and severity.Data were analyzed through descriptive analysis, univariate and multiple logistic regression. The majority was female (50.5%) and median age was 57 years. The prevalence of patients with potential DI at 24h was 68.6%. The highest frequency of patients with potential DI was 73.9% in the median of hospitalization. We found that 69.6% of patients presented potential DI at discharge. About 99% were drug-drug interactions. The drug-enteral nutrition interactions were more frequent in patientsprescriptions at discharge. Most IM were severe or moderate.The number of administered medication and the use of medication for the cardiovascular system were the factors independently associated with the occurrence of DI in the three occasions of hospitalization. The study also detected that 34.1% of patients presented ADE The most frequent ADE were adverse drug reactions (ADR) type A, of possible causality and moderate severity. Patients with ADE related to DI corresponded to 7% of the sample. The multiple logistic regression revealed that time of hospitalization and administration of cardiovascular medication were associated with the occurrence of ADE. This studys results revealed that despite the high frequency of potential DI, the number of ADE related to DI was small, however, these involved ADR of clinical significance such as nephrotoxicity and oversedation, which might compromise patient safety.

ASSUNTO(S)

drug interactions unidade de terapia intensiva adverse drug event gerenciamento de segurança interações de medicamentos drug therapy intensive care unit safety management evento adverso a medicamento farmacoterapia

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