Introduction Despite the impact on patient safety and the fact that prevalence is higher in older patients, previous research did not analyse drug-drug interactions (DDIs) in view of nursing care of elderly psychiatric patients. Aim To identify potential drug-drug interactions and polypharmacy in prescriptions of aged inpatients with psychiatric disorders and analyse associated factors. Methods In this retrospective cross-sectional study, we analysed the medical records of institutionalized patients diagnosed with psychiatric disorders (n = 94), aged >60 years, and prescribed multiple medications. Drug prescriptions were checked at admission, midway through and the last prescription. Factors associated with DDI occurrence were assessed using multivariable logistic regression analysis. Results A DDI prevalence potential of 67.0%, 74.5% and 80.8% occurred in patients at admission, midway through hospitalization and the last prescription, respectively. Most of the prescribed drugs were nervous system agents. A high percentage of serious and contraindicated potential DDIs occurred. Age between 60 and 69 years, use of cardiovascular and respiratory system drugs, and the number of medications contributed significantly to DDI. Implications for mental health nursing Knowledge on the factors associated with DDIs in patients with mental disorders can contribute to the improvement of effectiveness and safety of nursing care.
To identify DDI prevalence in that setting; to classify DDI; to verify correlations with demographics, pharmacotherapeutics, psychotropic medication and CMDs. Among 430 patients interviewed 190 had more than two medications prescribed, 58.4% had DDI. Factors associated were age and number of medications. Nine types of severe DDI composed 28% patients' prescriptions, 71.9% involving psychotropic medication. Only the number of types of drugs contributed to the regression model. Results raise important aspects regarding patient safety in PHC units in Brazil are where patients with psychological complaints have to seek for health care firstly.
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Bipolar disorder (BD) is a chronic and severe mood disorder associated with functional and cognitive impairments, and it is characterized by recurrent, extreme episodes of depression and mania or hypomania. 1,2 Managing symptoms and treatment is especially difficult in the early stages of the disorder. BD is also known for difficulties in adherence to pharmacotherapy.
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