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The control of blood pressure (BP) for patients with hypertension on medications has been elusive, despite the availability of evidence-based nationally recognized guidelines for treatment and 30 years of research addressing this. At present, less than 50% of patients with known hypertension are adequately controlled. If BP control could be improved, significant decreases in cardiovascular morbidity and mortality would occur.
The purpose of this study is to conduct a randomized controlled trial of the effectiveness of the provision of home blood pressure measurement and electronic communications (secure messaging to health care providers) to improve hypertension control.
This is single-blind, randomized, controlled trial, to test the effectiveness of applying the chronic care model to hypertension.
There is an emerging consensus that multifaceted, multilevel, interventions are most effective in improving care for chronic conditions. In order to successfully plan and execute the required strategies, care planning is being increasingly conducted by the use of systems planning models. Since its original description by Wagner, Austin and Von Korff in 1996, the Chronic Care Model has found wide application, acceptance and success in planning care for chronic diseases, however to our knowledge, it has not yet been applied to the care of hypertension. There are six components of the model, including: clinical information systems, decision support, delivery system design, self-management support, organizational support, and community resources. The model describes these components to activate both patients and physicians, and when this occurs optimally, health outcomes improve. The interventions below are designed according to this construct and to determine whether enhanced patient self-management support in the form of home blood pressure monitoring and augmented delivery system design with pharmaceutical care improves hypertension control.
- Group-1 (Usual Care) will receive usual care for their hypertension. This includes the following for physicians: guidelines and decision support for treatment of hypertension, reminds and feedback as to medication choices, the use of electronic medical records with the ability to graphically display blood pressures over time. Patients have access to secure Intranet services already available at GHC including portions of their electronic medical record (including their blood pressures and the graphic display of these), messaging, and prescription refill services, and laboratory results.
- Group-2 (Blood Pressure Monitoring) will additionally receive home blood pressure monitors, instruction on their use, and a proficiency training session on Web-based communication and encouraged to use this to communicate their blood pressures with their physician, refill medications, and view parts of their medical records (blood pressures, labs, medication list).
- Group-3 (Blood Pressure Monitoring and Pharmaceutical Care) will receive all of the above plus planned and proactive, self and care management support provided by clinical pharmacists via the Web. One of three clinical pharmacists will be assigned to each patient in group 3. The clinical pharmacist will initially telephone the patient and do an intake visit to assess their medical history specific to hypertension care and assist the patient in designing an action plan that addresses blood pressure self-monitoring, medication use, lifestyle habits to reduce blood pressure and cardiovascular risk (they will assist the patient in choosing one lifestyle activity to work on), and follow-up plans. The pharmacist and patient will communicate at regular intervals by secure message (telephone and clinic visits will be occur if needed) and work collaboratively to improve blood pressure control. The pharmacist will use a medication algorithm (based on Group Health and JNC7 guidelines) to adjust medications until goal blood pressure is reached (<135 mmHg and <85 mmHg average for home BP measurements) and will provide information as to resources available within Group Health or the community to assist patients with their lifestyle goals. Record keeping will occur in the electronic medical record with key aspects shared electronically and securely with the patient and their physician.
The interventions will be delivered over a period of 12-months.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment
Home BP;secure messaging;pharmaceutical care;
Group Health Research Institute
Group Health Cooperative
Published on BioPortfolio: 2014-08-27T03:51:20-0400
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