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01.06.2014 | Research Article | Ausgabe 3/2014

International Journal of Clinical Pharmacy 3/2014

Inappropriate prescribing in patients accessing specialist palliative day care services

Zeitschrift:
International Journal of Clinical Pharmacy > Ausgabe 3/2014
Autoren:
A. Todd, H. Nazar, S. Pearson, I. Andrew, L. Baker, A. Husband

Abstract

Background For patients accessing specialist palliative care day services, medication is prescribed routinely to manage acute symptoms, treat long-term conditions or prevent adverse events associated with these conditions. As such, the pharmacotherapeutic burden for these patients is high and polypharmacy is common. Consequently, the risk of these patients developing drug-related toxicities through drug–drug interactions is exacerbated. Medication use in this group should, therefore, be evaluated regularly to align with achievable therapeutic outcomes considering remaining life expectancy. Objective To (1) assess the prevalence of inappropriate medication use; (2) identify potential drug–drug interactions; and, (3) determine how many potential drug–drug interactions could be prevented by discontinuing inappropriate medication. Setting A specialist tertiary care palliative care centre in Northern England serving a population of 330,000. Main outcome measure Prescribing of inappropriate medication. Method Medication histories for patients accessing a specialist palliative day care centre were established and a modified Delphi method was used to reach consensus of medication appropriateness. The Delphi method utilized a framework considering the following factors: remaining life expectancy of the patient, time until benefit of the treatment, goals of care and treatment targets. Potential drug interactions were established using drug interaction recognition software and categorised by their ability to cause harm. Results A total number of 132 patients were assessed during the study period who were prescribed 1,532 (mean = 12/patient) medications; 238 (16 %) were considered inappropriate in the context of limited life expectancy. The most common class of medications considered inappropriate were the statins, observed in 35 (27 %) patients. A total of 267 potential drug–drug interactions were identified; 112 were clinically significant and 155 were not considered clinically significant. Discontinuation of inappropriate medication would reduce the total number of medications taken to 1,294 (mean = 10/patient) and prevent 31 clinically significant potential drug–drug interactions. Conclusion Patients accessing specialist palliative day care services take many inappropriate medications. These medications not only increase the pharmacotherapeutic burden for the patient but they also contribute to potential drug–drug interactions. These patients should have their medication reviewed in the context of life limiting illness aligned with achievable therapeutic outcomes.

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