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The type and incidence of adverse drug events in ageing medical inpatients and their effect on length of hospital stay
Author(s) -
Paradissis Chariclia,
Coombes Ian D.,
Donovan Peter,
Doran Elizabeth,
McKean Mitchell,
Barras Michael A.
Publication year - 2017
Publication title -
journal of pharmacy practice and research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.222
H-Index - 22
eISSN - 2055-2335
pISSN - 1445-937X
DOI - 10.1002/jppr.1255
Subject(s) - medicine , incidence (geometry) , adverse effect , retrospective cohort study , emergency medicine , percentile , medical record , adverse drug event , pediatrics , statistics , physics , mathematics , optics
Aims To determine the proportion of older medical patients who have an adverse drug event ( ADE ) during admission to hospital and assess the association with hospital length of stay ( LOS ). Methods A retrospective evaluation of eligible patients, aged greater than 65 years, consecutively admitted to a medical ward at the Royal Brisbane and Women's Hospital, Australia. Patient medication charts, medical notes and laboratory results were reviewed using an ADE trigger tool to identify potential ADE s during admission. A clinical panel examined and confirmed any true ADE s and the corresponding causative agents. LOS was compared between patients who did and did not have an ADE . Results A total of 164 patients were recruited over 30 days. The trigger tool identified a total of 69 triggers from 40 patients (24.3%) with a potential ADE during admission, of which 12 patients (7.3%) had a true ADE . The main drug categories implicated included cardiovascular, anti‐infective and haematological agents. The group of patients with an ADE had a longer median (25th, 75th percentile) LOS when compared to patients without an ADE : 6.5 (3.75, 11) versus 4 (2, 7) days (p = 0.043). Conclusion Approximately 7% of older in‐patients experience an ADE , which has a significant association with an increase in their LOS . To minimise patient harm, undesirable high‐risk drugs should be avoided and vigilant monitoring must occur if they need to be prescribed. An adequately powered, multi‐site study is required and preventative strategies should be further explored.

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