Study on Lithium Monitoring amongst Patients in a Community Mental Health and Primary Care Setting in Rural England

Area of Science:

• Psychiatry
• Clinical Pharmacology
• Public Health

Background:

• Lithium is a crucial mood stabilizer for Bipolar Disorder, recurrent depression, and treatment-resistant depression.
• It has a narrow therapeutic index, necessitating regular serum level monitoring due to toxicity risks.
• Adverse effects on kidney and thyroid function require periodic monitoring, alongside less recognized physical health checks like BMI and waist circumference.

Purpose of the Study:

• To audit compliance with NICE CG185 guidelines for lithium monitoring in Herefordshire.
• To identify monitoring gaps arising from shared care responsibilities between mental health services and General Practitioners (GPs).
• To assess the current practices for both biochemical and physical health monitoring in patients prescribed lithium.

Main Methods:

• Audit of patient records to assess adherence to NICE guidelines.
• Review of lithium monitoring practices within a specific rural English region.
• Analysis of compliance rates for blood biochemistry and physical health parameters (BMI, weight, waist circumference).

Main Results:

• 80% of cases complied with NICE guidance for blood monitoring.
• Only 40% of cases were compliant with physical health parameter checks (BMI and weight).
• Waist circumference measurement was rarely performed, both at initiation and during ongoing lithium therapy.

Conclusions:

• While blood biochemistry monitoring is generally adequate, physical health assessments, particularly waist circumference, are significantly under-resourced.
• There is a critical need to enhance awareness and implementation of annual physical health monitoring for patients on lithium.
• Development of clear shared care protocols between mental health services and GP practices is essential to improve comprehensive patient monitoring.