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Revista Española de Salud Pública

versión On-line ISSN 2173-9110versión impresa ISSN 1135-5727


ESTEBAN JIMENEZ, Óscar et al. A study of incidence and clinical characteristics of adverse drug reactions in hospitalized patients. Rev. Esp. Salud Publica [online]. 2017, vol.91, e201712050.  Epub 22-Dic-2017. ISSN 2173-9110.


Adverse drug reactions (ADR) are one of the ten main causes of mortality in the world, as a cause of hospital admissions or prolongation hospitalizations days created an important health and economic impact. This study aimed to detect incidence and characterize ADRs that occurred during hospitalization and associated with admission in Internal Medicine service.


Observational and prospective study of intensive RAM monitoring patients admitted in Internal Medicine services in a third level hospital over a twelve months period in 2014. The assessment consisted of a complete and protocol collecting information about the patients and related to suspected ADRs during hospitalization. Statistical analysis was performed using SPSS v.20.0.


The study included 253 patients and in 54 (21,34%) ADR were detected, the risk of experiencing an ADR was associated with the age (p=0.012). ADR-related hospitalizations incidence were 7,11%, and fatal ADR incidence were 1,97%. With regard to severity 81,2% were severe. Gastrointestinal disorders represented the most common ADRs followed by metabolism and nutrition disorders and vascular disorders. The drugs most frequently associated with ADRs were cardiovascular agents, antiinfective drugs and central nervous system agents. 72.2% of the patients who suffered ADR had polypharmacy.


In our study incidence of adverse drug reactions in hospitalized patients was 21,34%, this data and ADR´s related to admission to hospital or fatal ADR´s are mainly suffered by pluripathology and polymedicated elderly patients with worst renal function values. In these patients a more careful prescription should be made.

Palabras clave : Incidence study; Adverse drug reaction; Internal medicine.

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