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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT00303979
Other study ID # 258
Secondary ID
Status Completed
Phase
First received
Last updated
Start date May 2005
Est. completion date August 2009

Study information

Verified date January 2019
Source Medtronic Cardiac Rhythm and Heart Failure
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

The purpose of this study is to characterize current management of patients with either heart failure or prior myocardial infarction and left ventricular dysfunction and to assess the effect of education, specific clinical guidelines, reminder systems, comprehensive disease state management tools, benchmarked quality reports, and academic detailing on the use of evidence-based heart failure therapies in cardiology practices. This study is a quality improvement initiative that is being conducted through review of patient records.


Description:

IMPROVE HF, the largest US outpatient HF patient registry, has substantially contributed to our knowledge of how systolic HF and post MI left ventricular systolic dysfunction (LVSD) patients are treated in the outpatient setting.

The findings of IMPROVE HF clearly support this guideline and may help to establish a model framework for future performance improvement programs for outpatient cardiology practices.


Recruitment information / eligibility

Status Completed
Enrollment 34810
Est. completion date August 2009
Est. primary completion date August 2009
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- 18 years of age or older

- Primary or secondary diagnosis of heart failure or prior myocardial infarction (heart attack)

- Moderate-to-severe left ventricular dysfunction (LVD) as demonstrated by an ejection fraction < or = 35% and/or a qualitative assessment of LVD of moderate-to-severe or severe LVD

- Patient has been seen at the clinic at least twice in the past 2 years

- Patient received care from the physician participating in the study

Exclusion Criteria:

- Patient has died

- Patient is not expected to survive for 12 months due to medical conditions other than heart failure

- Patient has undergone heart transplant surgery

Study Design


Locations

Country Name City State
United States Abington Medical Specialists Abington Pennsylvania
United States Northeast Ohio Cardiovascular Specialists Akron Ohio
United States Albany Associates in Cardiology, Albany New York
United States Heart Place North Arlington Arlington Texas
United States Asheville Cardiology Associates Asheville North Carolina
United States Cardiology of Atlanta Atlanta Georgia
United States Northside Cardiology Atlanta Georgia
United States Primary Care Specialists Inc Ayer Massachusetts
United States Maryland Heart, PC Bethesda Maryland
United States Cardiovascular Associates of Montclair Birmingham Alabama
United States Heart Care Center of Illinois Blue Island Illinois
United States St. Luke's Idaho Cardiology Associates Boise Idaho
United States Heart and Vascular Center of Bradenton Bradenton Florida
United States Connecticut Heart & Vascular Center Bridgeport Connecticut
United States Medicor Bridgewater New Jersey
United States Cardiology Associates of Brooklyn Brooklyn New York
United States SUNY Downstate Medical Center Brooklyn New York
United States United Medical Associates Brooklyn New York
United States University Associates in Cardiology Burlington Vermont
United States Medical University of South Charleston South Carolina
United States Sanger Clinic Charlotte North Carolina
United States Merrimack Valley Cardiology Chelmsford Massachusetts
United States Clearwater Cardiovascular & Intervention Clearwater Florida
United States Mahesh Amin, MD PA Clearwater Florida
United States Cleveland Clinic Foundation Cleveland Ohio
United States Muhammed H. Zahra Cleveland Ohio
United States Heart Center of Southern Maryland Clinton Maryland
United States Missouri Cardiovascular Specialists Columbia Missouri
United States University Hospital Healthcare Columbia Missouri
United States Doctors Hospital Heart Failure Clinic Columbus Ohio
United States Cardiac Associates of New Hampshire Concord New Hampshire
United States Tchefuncte Cardiovascular Associates, Covington Louisiana
United States University of Texas South Western Medical Center at Dallas Dallas Texas
United States Geisinger Medical Center Danville Pennsylvania
United States Central Bucks Specialists, Ltd., Doylestown Pennsylvania
United States Cross County Cardiology Edgewater New Jersey
United States Cardiology Associates of Lakeview Fairfax Virginia
United States The Cardiovascular Group Fairfax Virginia
United States Meritcare Medical Center Fargo North Dakota
United States Consultants in Cardiology Farmington Hills Michigan
United States Medical Center of the Rockies Fort Collins Colorado
United States MidAmerica Cardiovascular Consultants Frankfort Illinois
United States St. Jude Heritage Medical Group Fullerton California
United States Northeast Georgia Heart Center Gainesville Georgia
United States Carolina Heart Specialists Gastonia North Carolina
United States Sutherland Clinic Germantown Tennessee
United States Arundel Heart Associates Glen Burnie Maryland
United States Cardiovascular Associates of Glenbrook and Evanston, LLC Glenview Illinois
United States Cardiology Associates of Green Bay Green Bay Wisconsin
United States Southeastern Heart and Vascular Greensboro North Carolina
United States Upstate Cardiology Greenville South Carolina
United States Tidewater Heart Specialists, Inc., Hampton Virginia
United States Associated Cardiologists Harrisburg Pennsylvania
United States Heart-Lung Center Hawthorne New Jersey
United States Hickory Cardiology Hickory North Carolina
United States Carolina Cardiology Associates High Point North Carolina
United States Pacific Cardiology Honolulu Hawaii
United States Central Arkansas Cardiovascular Institute Hot Springs Arkansas
United States Cardiology Consultants of Houston Houston Texas
United States Comprehensive Heart Care, PA Houston Texas
United States Pasco Cardiology Hudson Florida
United States Methodist Hospital Indianapolis Indiana
United States St. Vincent's Hospital Indianapolis Indiana
United States St. Vincent's Hospital Indianapolis Indianapolis Indiana
United States St. Vincent's Hospital, Indianapolis Indiana
United States University of Mississippi Medical Center Jackson Mississippi
United States Freeman Heart Institute Joplin Missouri
United States Mid America Cardiology Kansas City Kansas
United States Schuster Cardiology Associates Kettering Ohio
United States Cardiovascular Associates Kissimmee Florida
United States Scripps Clinic Green Hospital La Jolla California
United States Clark and Daughtrey Medical Group Lakeland Florida
United States The Heart Group, Ltd Lancaster Pennsylvania
United States Dartmouth-Hitchcock Medical Center Lebanon New Hampshire
United States Dartmouth-Hitchcock Medical Center Lebanon New Hampshire
United States Dela Clinic Lexington Tennessee
United States The Heart Institute of Northwest Ohio Lima Ohio
United States Arkansas Cardiology Clinic Little Rock Arkansas
United States University Cardiovascular Medical Group Los Angeles California
United States Veterans Administration Hospital Los Angeles California
United States Louisville Cardiology Medical Group P.S Louisville Kentucky
United States Louisville Cardiology Medical Group P.S Louisville Kentucky
United States Medical Center Cardiologists P.S.C Louisville Kentucky
United States Concorde Medical Group/NYU Hospital Manhattan New York
United States Heart Clinic of Louisiana Marrero Louisiana
United States OMNI Melbourne Florida
United States Cardiovascular Associates of Mesa Mesa Arizona
United States Miami Cardiology Group Miami Florida
United States Island Cardiac Specialist Mineola New York
United States Island Cardiac Specialists Mineola New York
United States Cardiology Associates Mobile Alabama
United States Cardio-Pulmonary Associates Monterey California
United States Temecula Valley Cardiology Murrieta California
United States Cardiology Associates Myrtle Beach South Carolina
United States Heart Center of Eastern Carolina New Bern North Carolina
United States Heart Center of Eastern Carolina, New Bern North Carolina
United States Gotham Cardiovascular Research New York New York
United States Bryce Morrice MD and Debra Heldman MD Inc Newark Ohio
United States Cardiology Consultants, PA Newark Delaware
United States Florida Heart Group Orlando Florida
United States Owensboro Heart and Vascular Owensboro Kentucky
United States Cardiovascular Clinic, Inc. Parma Ohio
United States Blackstone Cardiology Associates Pawtucket Rhode Island
United States Drexel University College of Medicine Philadelphia Pennsylvania
United States Pinehurst Cardiology Consultants Pinehurst North Carolina
United States Pinehurst Cardiology Consultants Pinehurst North Carolina
United States Legacy Heart Center Plano Texas
United States Cardiology Associates Port Charlotte Florida
United States Raleigh Cardiology Raleigh North Carolina
United States Cardiovascular Consultants PC Rochester Michigan
United States Eastside Cardiology, Roseville Roseville Michigan
United States Cardiology Diagnostics, Ltd, Saint Louis Missouri
United States Mercy Cardiology Saint Louis Missouri
United States St. Paul Cardiology Saint Paul Minnesota
United States Peninsula Cardiology Salisbury Maryland
United States Cardiology Clinic of San Antonio San Antonio Texas
United States Wilford Hall Medical Center San Antonio Texas
United States California Pacific Cardiovascular Medical San Francisco California
United States East Bay Cardiology San Pablo California
United States Southcoast Cardiology Savannah Georgia
United States Westchester Medical Group Scarsdale New York
United States Heart Care, PC Scottsdale Arizona
United States Cardiology Consultants, PA Spartanburg South Carolina
United States Vazzana and Bogin Cardiology Associates Staten Island New York
United States Sumter Medical Consultants Sumter South Carolina
United States Cardiology PC Syracuse New York
United States Cardiovascular Consultants, Tamarac Florida
United States Cardiology Consultants Medical Group Tarzana California
United States North West Ohio Cardiology Consultants Toledo Ohio
United States Cardiology Consultants Topeka Kansas
United States Southern Arizona VA Health Care System Tucson Arizona
United States Tyler Cardiovascular Consultants Tyler Texas
United States Indian River Cardiovascular Associate Vero Beach Florida
United States Southern New Jersey Cardiac Specialists Voorhees New Jersey
United States Columbia Cardiology Consultants West Columbia South Carolina
United States Iowa Heart Center PC, West Des Moines Iowa
United States Southbay Cardiology West Islip New York
United States Diagnostic and Clinical Cardiologists West Orange New Jersey
United States Westwood Cardiology Westwood New Jersey
United States Harbor Medical AssociatesSo Weymouth Weymouth Massachusetts
United States Cardiovascular Consultants of Kansas Wichita Kansas
United States Cardiology Associates of Southeastern PA Wynnewood Pennsylvania
United States York Hospital York Pennsylvania
United States Florida Medical Clinic Zephyrhills Florida

Sponsors (2)

Lead Sponsor Collaborator
Medtronic Cardiac Rhythm and Heart Failure Medtronic

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary To Evaluate Over the Aggregate IMPROVE-HF Practice Sites the Relative Changes in 7 Performance Measures at 24 Months Compared With Baseline and Determine the Number of Performance Measures That Achieved a Relative 20% or Greater Positive Change. 7 performance measures: angiotensin converting enzyme inhibitor and/or angiotensin II receptor blockers (ACEI/ARB), beta-blokers, aldosterone receptor antagonists, anticoagulation for atrial fibrillation (AF), cardiac resynchronization therapy (CRT-P/CRT-D), cardioverter-defibrillator (ICD/CRT-D), heart failure (HF) education.
We first calcuated % of patients who were eligible for a performance measure that were treated by it at baseline and 24 months. We then calculated the relative change as (% treated at 24 months - % treated at baseline)/% treated at baseline. The 95% confidence interval (CI) was calculated and the relative change of each performance measure was evaluated using a z-test for one-sample proportion.
The number of performance measures with >= 20% relative improvement was determined. The intervention was considered successful if a relative 20% or greater improvement in at least 2 of the 7 performance measures at 24 months compared with baseline was achieved.
24 Month
Secondary Observe the Number of Sites That Demonstrate a Relative 20% or Greater Improvement in 2 or More of the 7 Performance Measures at 24 Months as Compared to Baseline in Cohort A. The number of practices that achieved greater than or equal to 20% improvement in two or more of the 7 performance measures at 24 months as compared to baseline of cohort A is presented. 24 months
Secondary Observe the Change From Baseline to 24 Months in Each Performance Measure and Composite Score for the Aggregate Practices. performance measure improvement for each performance measure was analyzed at a practice level from baseline to 24 months. Performance measure adherence was calculated at the individual practice level and then combined and summarized. Mean, standard deviation, and 95% confidence intervals for performance measure adherence, composite score and relative change (24 months compared with baseline) are reported.
The Composite Score is based on the ratio of the sum of the numerators of all individual performance measures to the sum of the denominators of all individual performances measures. The numerator of a performance measure is the number of patients treated with that measure. The denomiator of a performance measure is the number of patients eligible for being treated with that measure.
24 months
Secondary Observe the Relative Change Between Baseline of Cohort A and 6 Months of Cohort B in Performance Measures and Composite Score for the Aggregate Practices. The relative changes between baseline of cohort A and 6 months of cohort B in performance measures and composite score for the aggregate practices were calculated using mean, standard deviation and 95% CI. Baseline and 6 Months
Secondary Observe the Relative Change Between Baseline of Cohort A and 18 Months of Cohort C in Performance Measures and Composite Score for the Aggregate Practices. The relative changes between baseline of cohort A and 18 months of cohort C in performance measures and composite score for the aggregate practices were calculated using mean, standard deviation and 95% CI. baseline and 18 Months
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