Principle of rational prescribing and deprescribing in older adults with multiple chronic conditions.

Although the majority of older adults in the developed world live with multiple chronic conditions (MCCs), the task of selecting optimal treatment regimens is still fraught with difficulty. Older adults with MCCs may derive less benefit from prescribed medications than healthier patients as a result of the competing risk of several possible outcomes including, but not limited to, death before a benefit can be accrued. In addition, these patients may be at increased risk of medication-related harms in the form of adverse effects and significant burdens of treatment. At present, the balance of these benefits and harms is often uncertain, given that older adults with MCCs are often excluded from clinical trials. In this review, we propose a framework to consider patients' own priorities to achieve optimal treatment regimens. To begin, the practicing clinician needs information on the patient's goals, what the patient is willing and able to do to achieve these goals, an estimate of the patient's clinical trajectory, and what the patient is actually taking. We then describe how to integrate this information to understand what matters most to the patient in the context of an array of potential tradeoffs. Finally, we propose conducting serial therapeutic trials of prescribing and deprescribing, with success measured as progress towards the patient's own health outcome goals. The process described in this manuscript is truly an iterative process, which should be repeated regularly to account for changes in the patient's priorities and clinical status. With this process, we aim to achieve optimal prescribing, that is, treatment regimens that maximize benefits that matter to the patient and minimize burdens and potential harms.