Introduction
Type 2 diabetes mellitus (T2DM) affects approximately 4.3 million people in the UK (Diabetes UK, 2023) and represents one of the most significant burdens on NHS primary care resources. Poorly controlled T2DM is associated with devastating macrovascular and microvascular complications, including cardiovascular disease, diabetic nephropathy, retinopathy, and peripheral neuropathy, all of which are largely preventable with optimal glycaemic management.
Nurse practitioners and practice nurses hold a pivotal role in T2DM management within primary care, leading structured diabetes review clinics, delivering patient education programmes, initiating and adjusting medication, and supporting lifestyle modification. This literature review examines the evidence for nurse-led interventions in improving glycaemic control (HbA1c) in T2DM patients within UK primary care settings.
Search Strategy
Databases and Search Terms
A systematic search was conducted in January 2024 across CINAHL Complete, PubMed/MEDLINE, and Cochrane Central Register of Controlled Trials (CENTRAL). Search terms included: “nurse-led,” “advanced nurse practitioner,” “practice nurse,” “Type 2 diabetes,” “glycaemic control,” “HbA1c,” “primary care,” “general practice.” Boolean operators combined terms, and searches were limited to publications between 2019 and 2024.
Inclusion and Exclusion Criteria
Studies were included if they: (1) examined a nurse-led or nurse-initiated intervention; (2) measured HbA1c as a primary or secondary outcome; (3) were conducted in primary care or community settings; (4) were published in English. Excluded were studies involving T1DM exclusively, those set in secondary or tertiary care, and studies with fewer than 50 participants.
Critical Appraisal
Quality Assessment Framework
Included studies were critically appraised using the CASP RCT checklist (for randomised controlled trials), CASP Cohort checklist (for observational studies), and the JBI Mixed-Methods Appraisal Tool (for mixed-methods studies). Studies were rated as strong, moderate, or weak quality.
Key Findings
Structured Diabetes Education
Three RCTs (n = 1,847 combined) demonstrated significant HbA1c reductions following nurse-led structured education programmes (DESMOND, X-PERT) compared with usual care. Mean HbA1c reductions ranged from 0.4% to 1.1% at 12 months (p <0.01). However, long-term adherence to lifestyle recommendations declined at 24 months.
Nurse Prescribing & Medication Optimisation
Two prospective cohort studies demonstrated that independent nurse prescribers initiating or intensifying diabetes medication achieved comparable glycaemic outcomes to GP-led management, with significantly higher patient satisfaction scores (p = 0.03).
Technology-Enhanced Monitoring
Two mixed-methods studies and one RCT explored nurse-supported continuous glucose monitoring (CGM) and remote digital coaching. Participants using CGM with nurse review appointments achieved HbA1c reductions 0.6% greater than the control group at 6 months.
Discussion
The literature provides moderate-to-strong evidence that nurse-led interventions are effective in improving glycaemic control in T2DM within primary care. Structured education, nurse prescribing, and technology-enhanced monitoring each demonstrate significant HbA1c reductions. Importantly, nurse-led care appears to improve patient experience without compromising clinical outcomes, supporting workforce planning models that expand the nursing role in chronic disease management.
Conclusion
Nurse-led interventions are a clinically effective and patient-centred approach to T2DM management in primary care. Investment in nurse education, prescribing authority, and digital infrastructure is recommended to maximise the impact of nursing on the NHS diabetes care agenda.
