Older persons take on average multiple drugs. As people age, there is an apparent increase in pharmacodynamic sensitivity to different making the patient more prone to experience side effects. Alterations in body composition and concomitant changes in pharmacokinetic parameters can also result in a higher risk for adverse drug events. All these factors make the older person, notwithstanding the heterogeneity of this population, more vulnerable for the negative consequences of polypharmacy.~Polypharmacy is a cause of negative clinical outcomes but it still remains unclear which intervention or set of interventions should be used to optimize the prescription of pharmacotherapy in the elderly patient. Therefore, the investigators developed the RASP (RASP = Rationalisation of home medication by an adjusted STOPP-list in older patients; STOPP = Screening Tool of Older Persons' potentially inappropriate Prescriptions), a list as tool to reduce polypharmacy adapted to Belgian national prescribing tendencies within geriatric wards. Content and reliability of the RASP have been validated and the investigators aim to further study the impact of the systematic implementation of this RASP on geriatric wards in a prospective cluster randomized controlled trial.
The aim of this study is to determine whether a clinical pharmacist using the RASP list (RASP = Rationalisation of home medication by an adjusted STOPP-list in older patients; STOPP = Screening Tool of Older Persons' potentially inappropriate Prescriptions) can optimise the drug use in elderly inpatients.