Efectos adversos por medicamentos en pacientes ambulatorios ancianos en el momento de su ingreso hospitalario

  1. Joseba Mikel Ibarmia Lahuerta
  2. Paula Arriola Martínez
  3. Ainhoa Burzaco Sánchez
  4. Eva Lizarralde Palacios
  5. Luis Carlos Hinojal Ortega
Atención Farmacéutica

ISSN: 1139-7357

Year of publication: 2003

Volume: 5

Issue: 6

Pages: 345-350

Type: Article

More publications in: Atención Farmacéutica


Objective: To know the number of drugs and the prevalence of adverse drug events (ADEs) in the elderly population from the ambulatory environment. Methods: A prospective study of two months of duration conducted to patients older than 65 years of age, which gathered information about hospital entrances in an internal medicine service. Results: 82.6% (272) of patients entered during this period were older than 65 years. The average drug consumption by the patients was of 4.8 (range: 0-14). ADEs were detected in 71 patients (26.1%). Eight cases were labeled with possible ADEs and 63 patients were described with probable ADEs. A total of 77 ADEs occurred in these 63 patients. ADEs were the cause for a hospital entrance in 23 patients, which represented an 8.4% of the causes for entrance in elderly patients during the period. In fact, 36.5% of ADEs provoked a hospital entrance. Conclusions: The results show excessive drug consumption by the elderly population and the large number of hospital entrances in relation to the undesirable effects induced by medication