About this trial
The purpose of this study is to find out whether a program called HEARTS can improve care for people who have both high blood pressure and diabetes. HEARTS was created by the World Health Organization to help primary care clinics deliver better treatment. It includes training for health workers, simpler treatment guides, better access to medicines, teamwork among clinic staff, and tracking systems to monitor patient care. In this study, 36 public primary care clinics in Guatemala will be randomly assigned to either use the HEARTS program or continue with their current care. About 1,440 adults who have both high blood pressure and diabetes will take part. Participants will be assessed at the start of the study and again after 12 months. The main measures are blood pressure and hemoglobin A1c (a blood test that shows average blood sugar levels over the past 2 to 3 months).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age ≥18 years
Systolic blood pressure ≥130 mmHg on ≥2 occasions, defined as the mean of 6 measurements at 2 study visits scheduled at least 1 day apart but within 7 days
Hemoglobin A1c ≥6.5%
Able and willing to provide informed consent
Disqualifiers
Does not live in Health Center's catchment area or is unwilling to receive care at the Health Center
Currently pregnant or planning pregnancy in the next 2 years
Has been diagnosed with type 1 diabetes, or there is high suspicion of this diagnosis by study physicians
Has severe chronic or terminal illness such that primary care management of hypertension and/or diabetes would be clinically inappropriate, including end-stage kidney disease
Trial design
Parallel
Treatments tested in this trial
HEARTS implementation strategies
Other interventionA package of five multilevel implementation strategies based on the WHO/PAHO Hearts Technical Package, adapted to Guatemala: (1) Training and supportive supervision for health workers on evidence-based hypertension and diabetes treatment protocols; (2) Simplifying treatment protocols; (3) Strengthening supply chains of a core set of medications and supplies; (4) Task sharing with non-physician health workers; (5) Implementing quality monitoring systems using standardized registries and indicators.
Supply chain strengthening
Other interventionStrengthening supply chains of a core set of medications and supplies for hypertension and diabetes care. This strategy is provided to both arms to ensure that observed between-arm differences are attributable to the other HEARTS implementation strategies rather than to variations in medication and supply availability.
Treatment groups
Trial outcomes
Primary outcomes
Change in systolic blood pressure
Between-arm mean difference in change in systolic blood pressure (mmHg)
Change in hemoglobin A1c
Between-arm mean difference in change in hemoglobin A1c (%)
Secondary outcomes
Change in diastolic blood pressure
Between-arm mean difference in change in diastolic blood pressure (mmHg)
Proportion with blood pressure control
Between-arm difference in proportion achieving blood pressure \<130/\<80 mmHg
Proportion with hemoglobin A1c control
Between-arm difference in proportion achieving HbA1c \<7.0%
Proportion with combined blood pressure and hemoglobin A1c control
Between-arm difference in proportion achieving blood pressure \<130/\<80 mmHg and HbA1c \<7.0%
Locations
Sponsors and contacts
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