Patient-centered Outcomes Related to TReatment Practices in Peripheral Arterial Disease: Investigating Trajectories (PORTRAIT)

Active, not recruiting

Conditions: Peripheral Arterial Disease
Quality of Life
Quality of Care

Registration Number: NCT01419080

Lead Sponsor: Saint Luke's Health System

Brief Summary: An estimated 8 million individuals in America are affected by peripheral arterial disease (PAD), blockages of the leg arteries that can cause excruciating calf pain when walking. PAD can have a tremendous impact on patients' quality of life. It is also associated with high rates of heart attacks and premature death. While there are a number of treatments, there have been few previous studies that have prospectively examined treatment patterns for PAD or sought to systematically identify opportunities to improve care. Most importantly, there have been no rigorous studies examining the impact of the disease from patients' perspectives - their symptoms, function and quality of life - as a function of different patient characteristics and treatments. The PORTRAIT study (Phase II) will systematically document the treatments and health status (symptom, function and quality of life) outcomes of 840 US patients over the course of one year (assessments at baseline, 3, 6, and 12 months) from 10 centers to address these gaps in knowledge. It will illuminate whether disparities in treatment or health status outcomes exist as a function of patients' age, gender, race, socioeconomic or psychological characteristics. PORTRAIT will substantially elevate the field and identify critical gaps in the way PAD is currently managed, including potential disparities in care, so that the quality of care can be improved.

Detailed Description: Peripheral arterial disease (PAD) is a highly prevalent, but undertreated atherosclerotic disease with a disproportionately poor cardiovascular prognosis, as compared with other cardiovascular diseases. Cardiac events are, however, only one manifestation of PAD. Patients' health status (symptoms, function, and quality of life) are critical outcomes from patients' perspectives. To date, there have been no systematic prospective evaluations of disease-specific health status outcomes in PAD and how these vary by treatment and patient characteristics. The long-term goal of our work is to create an evidence-based multi-modal PAD management program that can be individualized to each patient. Following our preparatory work in Pilot PCORI grant 1 IP2 PI000753-01, the current proposal will develop a multi-center observational registry called PORTRAIT (Patient-centered Outcomes Related to Treatment Practices in peripheral Arterial disease: Investigating Trajectories). PORTRAIT will prospectively define and relate patients' care to their health status outcomes as a function of their treatment received at specialty clinics for new-onset, or exacerbations, of their PAD. We hypothesize that there will be substantial variability in treatment patterns across providers and by patient characteristics and that these will explain much of the variation in patients' health status outcomes. Four hypothesis-driven specific aims will be tested; the 5th aim will result in a direct deliverable from this study:

Aim 1: We hypothesize strong associations between the severity of patients' health status and the use of revascularization and that these will vary by age, gender, race, and socio-economic status. This aim will examine variations in treatment by patient characteristics as a foundation for identifying disparities in care.

Aim 2: We hypothesize that revascularization will be associated with more rapid, and larger, improvements in health status as compared with non-invasive options, and that these benefits will vary by age, gender, baseline health status, smoking cessation, minority race, and depressive symptoms. The primary objective of PORTRAIT is to quantify patients' PAD-specific health status outcomes overall, and as a function of treatment and patient characteristics.

Aim 3: We hypothesize that variations in performance measure adherence exist across providers, with greater adherence to pharmacologic therapies for prevention, than exercise treatments to improve function. We will compare real world PAD care against 4 PAD performance measures to provide insights into the quality of PAD care.

Aim 4: We hypothesize that variations in pharmacologic and supervised exercise will be associated with differences in health status outcomes and provide the evidence to suggest that failure to prescribe these evidence-based treatments will result in lower health status scores.

Aim 5: Use the new information to create educational tools to assist patients in selecting treatments.

Recruitment & Eligibility

Status: ACTIVE_NOT_RECRUITING

Sex: All

Target Recruitment: 797

Inclusion Criteria

Age ≥ 21 years
New or recent exacerbation of exertional leg symptoms
Resting ankle-brachial index assessment ≤0.90 or drop in post-exercise ankle pressure ≥20 mmHg

Exclusion Criteria

Non-compressible ankle-brachial index (≥1.30)
Critical limb ischemia
Lower-limb endovascular or surgical vascular procedure in past year
Not speaking either English or Spanish
Hearing impaired
Unable to provide written informed consent
Currently a prisoner

Study & Design

Study Type: OBSERVATIONAL

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Peripheral Artery Disease (PAD) - Specific Health Status	One Year	Scores on a scale of 0-100 with higher scores representing better health status (0= worst health imaginable, 100= best health imaginable). Subscales are weighed in a standardized scoring algorithm (proprietary). Measures symptoms, symptom stability, and quality of life.

Secondary Outcome Measures

Name	Time	Method
All-cause Mortality	One Year	all-cause mortality

Trial Locations

Locations (10): Bridgeport Hospital
🇺🇸
Bridgeport, Connecticut, United States
Cleveland Clinic
🇺🇸
Cleveland, Ohio, United States
Miriam Hospital
🇺🇸
Providence, Rhode Island, United States
Saint Joseph Mercy Hospital
🇺🇸
Ann Arbor, Michigan, United States
Duke University Medical Center
🇺🇸
Durham, North Carolina, United States
Yale University
🇺🇸
New Haven, Connecticut, United States
Ochsner Health System
🇺🇸
New Orleans, Louisiana, United States
Truman Medical Center
🇺🇸
Kansas City, Missouri, United States
Saint Luke's Hospital of Kansas City
🇺🇸
Kansas City, Missouri, United States
Rhode Island Hospital
🇺🇸
Providence, Rhode Island, United States