Medication use in a cohort of newly admitted nursing home residents (Ageing@NH) in relation to evolving physical and mental health.

Background: Medication use is high among nursing home (NH) residents, but there is a lack of longitudinal studies, determining medication use at admission and its evolution over time.

Aim: Describing the evolution of the medication use two years after entering a NH, compared to the baseline observations and exploring the relation to the physical and mental health.

Methods: Data from the observational prospective Ageing@NH study, based on an inception cohort of newly admitted residents at NHs (65+) was used, selecting those consenting and with medication chart available. Information about socio-demographic, functional and mental characteristics, as well as medication use, was collected at baseline, year 1 and year 2.

Results: Medication chart was available for n = 741 at baseline (mean age 83.8, 66% female), and for n = 342 residents in year 2. The mean number of total medications increased from 8.9 to 10.1 (p-value < 0.001). Polypharmacy was high, with an increase in extreme polypharmacy from 23% to 32%. The biggest increase was noted in the respiratory (from 17% to 27%) and alimentary medications (from 80% to 87%). Cardiovascular medication use in year 2, was lower in those with stable high dependency (77%) and those evolving from low to high dependency (79%), than those with stable low dependency (89%) (p < 0.025). For residents with or evolving to dementia symptoms, decline in most medication groups was observed, especially in pain and sleeping medications, while antipsychotics use increased.

Conclusion: Although medication use was high, signs of deprescribing were noted when the physical and mental health of the residents declined.