Hypertension Improvement Project (HIP): study protocol and implementation challenges.

Area of Science:

• Cardiovascular Medicine
• Public Health
• Health Services Research

Background:

• Hypertension impacts 29% of US adults, with only 53% achieving goal blood pressure despite available treatments.
• Poor blood pressure control contributes significantly to heart disease, stroke, and kidney failure.
• The chronic care model emphasizes patient self-care and physician collaboration for effective hypertension management.

Purpose of the Study:

• To evaluate the effectiveness of a patient behavioral intervention and a physician quality improvement intervention on systolic blood pressure.
• To assess the separate and combined effects of these interventions within a primary care setting.
• To inform healthcare organizations on implementing effective hypertension management strategies.

Main Methods:

• A nested 2x2 randomized controlled trial protocol was used.
• Primary care practices were randomized to physician interventions (training, monitoring) or usual care.
• Patients were individually randomized to behavioral interventions (group sessions, phone contacts) or usual care.
• Systolic blood pressure change at 6 months was the primary outcome; diastolic blood pressure and control rates at 6 and 18 months were secondary outcomes.

Main Results:

• The study enrolled 8 practices, 32 physicians, and 574 patients.
• Baseline characteristics and implementation challenges were documented.
• The study design allows for assessing the effectiveness and cost of individual and combined interventions.

Conclusions:

• The Healthcare Interventions for Patients (HIP) interventions show promise for improving blood pressure control in primary care.
• Addressing patient self-care and physician practices aligns with the chronic care model.
• The findings support informed decision-making for implementing hypertension management programs.