Guidelines for Drug Therapy of Hypertension: Multi-Site Implementation
Behavioral: ATHENA Decision Support System, An Automated Clinical Decision Support System for Health Care Providers
Behavioral: Profiling performance
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
|Official Title:||Guidelines for Drug Therapy of Hypertension: Multi-Site Implementation|
- Primary care clinicians adherence to hypertension guidelines and blood pressure control in their panels of patients.
|Study Completion Date:||September 2005|
|Arm 1||Behavioral: ATHENA Decision Support System, An Automated Clinical Decision Support System for Health Care Providers Behavioral: Profiling performance|
Hypertension, the most commonly reported medical problem in veterans, is a major risk factor for heart disease and stroke. Lowering blood pressure decreases the risk of these adverse clinical outcomes. Widely promoted evidence-based clinical practice guidelines set target blood pressures for adequate control, yet most hypertensives, including VA patients, do not meet the targets. Guidelines also call for use of specific drugs depending on the patient's pattern of comorbid characteristics; yet, clinicians often prescribe drugs that are not guideline-concordant.
The long term objective of this work is to contribute to the VA's ability to respond flexibly to rapidly evolving medical knowledge by establishing a system guidelines that can be used throughout the VA nationally for implementing multiple different clinical practice. In collaboration with Stanford Medical Informatics we developed an automated decision support system for hypertension management, known as ATHENA DSS built with EON technology for guideline-based decision support. ATHENA DSS incorporates hundreds of knowledge rules to operationalize guidelines for hypertension.
ATHENA DSS combines patient information from VistA with an automated knowledge base of hypertension to generate patient-specific recommendations for management of hypertension that are displayed to primary care clinicians in pop-up windows in the VA�s Computerized Patient Record System (CPRS) when the record for appropriate patients is opened on the day of scheduled primary care clinic visits. The ATHENA DSS pop-up provides advice on adequacy of control of blood pressure and specific recommendations for drug therapy of hypertension, a visual display of the patient�s medication history and concurrent blood pressures, evidence supporting the main recommendations, and other information. We deployed the system at three VA medical centers--Durham, San Francisco, and Palo Alto�and conducted a clinician-randomized trial. We logged data on use of the system, monitored comments entered by clinicians, and conducted a questionnaire survey of clinicians. We planned analyses of impact on clinician prescribing and patient blood pressures. We planned preparation for dissemination of the system to additional VA medical centers.
Project work is ongoing at time of preparing this report. We recently received notice of funding for a VISN collaborative that will use the ATHENA DSS in five medical centers in VISN 1 (New England).
Please refer to this study by its ClinicalTrials.gov identifier: NCT00122161
|United States, California|
|VA Palo Alto Health Care System, Palo Alto, CA|
|Palo Alto, California, United States, 94304-1290|
|San Francisco VA Medical Center, San Francisco, CA|
|San Francisco, California, United States, 94121|
|United States, North Carolina|
|Durham VA Medical Center, Durham, NC|
|Durham, North Carolina, United States, 27705|
|Principal Investigator:||Mary K. Goldstein, MD MS||VA Palo Alto Health Care System, Palo Alto, CA|