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Anales del Sistema Sanitario de Navarra

versión impresa ISSN 1137-6627

Resumen

PARDO-CABELLO, A.J. et al. Drug-related mortality among inpatients admitted in Internal Medicine. Anales Sis San Navarra [online]. 2018, vol.41, n.3, pp.339-346.  Epub 22-Mayo-2019. ISSN 1137-6627.  http://dx.doi.org/10.23938/assn.0381.

Background

To analyze the mortality associated with prescriptions, the drugs most frequently involved and the associated risk factors in patients admitted to Internal Medicine.

Methods

A retrospective, observational study. The clinical records of adult patients who died consecutively in the department of Internal Medicine in a Spanish tertiary hospital over twenty-two months were reviewed. The main variable was the prevalence of hospital death suspected of being related to the medications administered during admission.

Results

Out of the 455 deaths analyzed, 22.2% were related to the medications received; in 55 cases (12.1%) the drugs were suspected of being the cause of death and in 46 cases (10.1%) of contributing to it. The most frequent diagnoses in cases of death associated with drugs were cardiac arrhythmia (23.7%), severe hemorrhage (19.8%) and aspiration pneumonia (12.8%). The drugs with the highest prevalence in deaths related to pharmacological treatment were antithrombotic drugs (23.7%), digoxin (21.7%), antipsychotics (17.8%) and benzodiazepines (14.8%). The only independent risk factor for mortality associated with treatment was the number of medications administered (OR=1.25, 95%CI: 1.14-1.37). No significant association was found with age, sex, number of pathologies or duration of hospital stay.

Conclusion

A high percentage of deaths of patients admitted to Internal Medicine were considered related to the medications received. Antithrombotic drugs, digoxin and psychotropic drugs were the agents most frequently implicated. This mortality is independently and significantly associated with the number of medications administered.

Palabras clave : Adverse drug reactions; Hospital mortality; Internal Medicine; Pharmacoepidemiology.

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