Nurse-led hypertension care lowered blood pressure, but retention remained uneven across LMIC clinics
Hypertension care in low- and middle-income countries lives or dies on follow-up. In a systematic review of 11 studies involving 19,005 adults, nurse-led interventions in primary care settings improved blood pressure control, yet the path from clinic enrollment to sustained retention remained inconsistent and often poorly defined.
The review focused on adults with hypertension treated in primary health care facilities across LMICs, where workforce shortages and fragmented chronic care make continuity difficult to maintain. Seven studies came from Africa and four from Asia, spanning a mean age range of 52.0–67.4 years, with women accounting for 51.3% to 76.0% of participants. Most interventions were multicomponent, combining blood pressure monitoring, counseling, follow-up coordination, medication support, and lifestyle advice under nurse-led care models.
A blood pressure response is only part of the story.
Blood pressure reductions were consistent even when retention definitions were not
Across the included evidence, systolic blood pressure outcomes moved in the same direction. Ten studies reported systolic blood pressure data, and nine provided mean post-intervention values; most showed mean reductions greater than 10 mmHg. Nine studies reported diastolic blood pressure, and every one described a reduction after intervention, with declines ranging from −1.8 mmHg to −20.6 mmHg. These are clinically meaningful shifts in a condition where even modest sustained reductions can lower the risk of stroke, heart failure, renal decline, and premature death.
The biological logic is straightforward. When nurses take a central role in chronic hypertension care, they do more than repeat instructions; they create recurring contact points where adherence problems, side effects, missed refills, and lifestyle barriers can be identified before control slips away. In settings where patients are often lost to follow-up, structured nurse-led contact may be the most practical way to keep treatment active long enough for blood pressure control to take hold.
The review did not pool these blood pressure effects, and the reported reductions should not be interpreted as a single summary estimate. Heterogeneity in intervention duration, outcome measures, and follow-up intervals prevented meta-analysis, forcing a narrative synthesis instead. Even so, the direction of effect was remarkably consistent for blood pressure control.
Retention in care varied sharply from study to study
Retention outcomes were far less uniform. Appointment attendance ranged from 12.6% to 96.5%, routine clinical retention from 27.0% to 62.8%, and study completion of follow-up from 83.8% to 97.2%. Those ranges are wide enough to blunt any easy claim that nurse-led care alone solves continuity problems in primary care.
This variability likely reflects more than intervention quality. Retention was measured in different ways across studies, and those definitions were not standardized. Some studies tracked appointment attendance, others looked at ongoing clinical retention, and others measured completion of the study follow-up period. In chronic disease care, those are not interchangeable endpoints. A patient can complete a study visit sequence without maintaining true longitudinal treatment engagement, and a clinic may count attendance while still missing medication gaps between visits.
Risk-of-bias assessment added another layer of caution. Most randomized controlled trials showed high or unclear risk in the missing outcomes data domain, which weakens confidence in the stability of the observed effects. The evidence base still points in a favorable direction, but the durability of benefit remains sensitive to how completely studies captured follow-up.
Adherence signals were present, but too limited for a firm conclusion
Medication adherence was reported in only four studies, and the effects varied. Some intervention groups improved relative to controls or baseline, but the overall evidence was too thin and too heterogeneous for a confident synthesis. This leaves an important gap, because adherence sits between clinic contact and blood pressure response: if patients do not take medication consistently, blood pressure lowering cannot be sustained no matter how well the clinic visit is structured.
Nurse-led models make sense in this space because nurses are often the most stable point of contact in resource-limited health systems. Their role can include blood pressure measurement, protocol-based treatment decisions, structured education, appointment tracking, and coordination with community or digital follow-up systems. In practice, that combination can reduce friction at each step where patients commonly disappear from care.
What the review adds to LMIC hypertension policy
The review assembled studies that were conducted in real-world primary care settings rather than in tightly controlled environments alone. That matters for policymakers planning scale-up. The inclusion of quasi-experimental and observational studies alongside randomized trials gave the review a broader view of implementation, though it also introduced more variability in design quality and outcome reporting.
The message is measured but clear: nurse-led interventions appear useful for lowering blood pressure in LMIC primary care, and they may help build more reliable chronic care pathways. The retention data, however, are too inconsistent to assume that these programs will automatically keep patients engaged over time. Standardized outcome measures will be essential if future studies are to show whether retention improves because of the intervention itself or merely because of the way retention is counted.
A stronger evidence base will need longer follow-up, clearer retention definitions, and more complete reporting of adherence and missing outcomes. Without those elements, the field will continue to know that blood pressure can improve under nurse-led care while still struggling to identify which implementation features keep patients connected to treatment long enough for that improvement to last.