General practice pharmacist-led antipsychotic physical health monitoring: a prospective intervention scoping study

Background People with severe mental health illness die prematurely, often due to preventable cardiometabolic disease, which can be exacerbated by antipsychotic medicines that are effective for treating mental illness. Literature demonstrates that physical health monitoring, as recommended in guidelines, for people receiving antipsychotics is substandard. Therefore, we aimed to scope the potential of a general practice clinical pharmacist (GPCP)-led multidisciplinary intervention optimising adherence to cardiometabolic monitoring guidelines and delivering polypharmacy reviews.Method Prospective intervention scoping study in three urban general practices; one usual care, two intervention. Patients 18-65 years old prescribed oral antipsychotics were identified from records, and invited for cardiometabolic monitoring and GPCP medication review, from January to December 2022. Interventions and onward referrals were recorded and collated. Anonymised pre- and post-review data were analysed, and actions were graded for clinical importance.Results In total 1.5% (210/14,159) of patients aged 18-65 years met inclusion criteria; usual care practice (n = 58); and intervention practices (n = 152). From baseline, the usual care practice achieved an absolute 7% increase in the cardiometabolic monitoring care bundle (glucose/glycosylated haemoglobin, lipids, blood pressure plus body mass index) versus 19-58% in the intervention practices. Two-thirds (92/152) of patients participated in medication reviews, requiring pharmacological and/or non-pharmacological clinical actions. The majority of actions were graded as moderate importance. Seven percentage of patients were identified as new pre-diabetic/diabetic and 6% were at high risk of cardiovascular disease requiring statin initiation.Conclusion A pharmacist-led multidisciplinary general practice-based approach may be effective at optimising cardiometabolic monitoring; identifying and treating diabetic and cardiovascular risk factors. People with severe mental illness die 15-20 years earlier than the general population, many due to preventable and/or treatable heart disease. While antipsychotic medicines are effective for treating mental illness they are associated with potential adverse effects; weight gain, increased blood pressure, blood sugar, and cholesterol. Therefore, guidelines advise regular physical health checks for people with severe mental illness, and those receiving antipsychotics, to reduce avoidable harms and optimise preventative treatments. However, routine monitoring is substandard. This study aimed to explore the potential of a general practice pharmacist-led intervention to optimise physical health monitoring and medication reviews, from January to December 2022. Three practices participated; one providing usual care, and two the pharmacist intervention. The usual care practice achieved a 7% increase in all monitoring parameters (weight, blood pressure, blood sugars plus cholesterol), whereas the pharmacist-led practices achieved a 19-58% increase in monitoring. Two in three patients (92/152) participated in a medication review with the pharmacists that addressed a range of mental and physical health issues. Of the 152 patients in the intervention practices 6% were identified as being at high risk of heart disease requiring preventative medicines, and 7% were identified as having new diabetes and/or pre-diabetes.