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Multi-center cluster-randomised clinical trial to evaluate the efficacy of an intervention to improve anti-hypertensive medication adherence among patients with uncontrolled hypertension and high cardiovascular risk

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN35208258
Enrollment
900
Registered
2004-10-11
Start date
2000-01-01
Completion date
Unknown
Last updated
2015-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Arterial hypertension Circulatory System Hypertension

Interventions

Usual clinical practice will be continued in patients assigned to the control group. The intervention to improve adherence to antihypertensive medications in the treatment group will include multi-lev

Sponsors

Osona Foundation for Research and Health Education (Fundació d?Osona per a la Recerca i l?Educació Sanitàries [FORES]) (Spain)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 900 patients, aged 50 or older, presenting non-controlled systolic and/or diastolic hypertension, elevated cardiovascular risk (ten-year probability of a cardiovascular event =30%). 90 physicians from hospitals and primary care centers will be randomly allocated to the intervention or control group.

Exclusion criteria

Exclusion criteria: 1. Participation in any investigational clinical trial within the past 3 months. 2. Incapacity or unwillingness to sign the informed consent.

Design outcomes

Primary

MeasureTime frame
1. Mean SBP and DBP values obtained during office visit (measured at each visit with a semiautomatic sphygmomanometer (OMRON 705-CP). Main analysis will include blood pressure data until visit 3 (6 months).

Secondary

MeasureTime frame
1. Medication adherence according to MEMS (medication event monitoring system) device results. Medication adherence data will include information on the first 6 months (visit 3). Apart from recording the date and time each time the container is opened, the information from the electronic device may be downloaded to a computer for further statistical analysis. 2. Time elapsed until the first cardiovascular morbidity or mortality event during follow-up (expected follow-up duration: 5 years). 2.1. Fatal events ascribable to cardiovascular pathology. the following will be included: sudden heart failure; fatal myocardial infarction; death during/post percutaneous transluminal coronary angioplasty (PTCA) or aortocoronary bypass; death due to congestive heart failure; fatal CVA. 2.2. Non-fatal events ascribable to cardiovascular pathology. the following will be included: debutant congestive heart failure requiring hospitalization or chronic congestive heart failure requiring hospitalization; non-fatal acute myocardial infarction, as verified by a ST-segment peak in the ECG and/or typical enzyme pattern; emergency thrombolytic treatment/fibrinolytic treatment and/or emergency PTCA/aortocoronary bypass to prevent extensive myocardial infarction, as verified by a ST-segment peak in the ECG and/or typical enzyme pattern; CVA verified by CAT or hospital recordings; angina diagnosed with positive treadmill test results; routine PTCA/aortocoronary bypass; unstable angina requiring hospitalization; silent myocardial infarction detected during the study and not present in the ECGs prior to the beginning of the study; terminal renal insufficiency, impaired renal function.

Countries

Spain

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026