Pre-clinical Cardiac Dysfunction Among Asymptomatic Hypertensive Patients

This study has been completed.
Sponsor:
Collaborator:
Robert Wood Johnson Foundation
Information provided by (Responsible Party):
Phillip D. Levy, Wayne State University
ClinicalTrials.gov Identifier:
NCT00689819
First received: June 2, 2008
Last updated: November 7, 2013
Last verified: November 2013
  Purpose

This project will evaluate the clinical and cost effectiveness of a novel, multidisciplinary approach to identify and treat pre-clinical cardiac dysfunction (PCCD) in asymptomatic hypertensive patients identified in a single center urban emergency department. Premature onset of pressure-related cardiac complications of hypertension (especially heart failure) has important implications for long-term survival, quality of life and healthcare costs. This project will target patients who have already developed pressure-related cardiac structural abnormalities yet remain symptom free. These individuals are at tremendous risk for progression to clinically overt heart failure and its associated consequences. We hypothesize that detection and treatment of patients with hypertension who have pre-clinical structural cardiac damage will enable forestallment of the disease process and offer the opportunity to reduce the burden of cardiac morbidity associated with hypertension. This project will implement a program to prospectively identify PCCD (using echocardiography) and provide treatment. At present, the optimal blood pressure goal for patients with PCCD is unknown so this study will randomize patients to 2 levels of blood pressure control: "normal", which is consistent with current national guidelines and "intensive", which will aim for a markedly lower blood pressure (< 120/80). Enrolled patients will receive active treatment and follow-up for 1 year. At the end of 1 year, we will evaluate: 1) the ability of this program to achieve blood pressure goals; 2) the cost effectiveness; and 3) the proportion in each blood pressure group who have evidence of disease regression on echocardiography.


Condition Intervention
Hypertension
High Blood Pressure
Ventricular Hypertrophy
Diastolic Dysfunction
Systolic Dysfunction
Behavioral: Exercise
Behavioral: Weight Loss
Behavioral: Low Sodium Diet
Behavioral: Smoking Cessation
Drug: Pharmaceutical Therapy (no specific therapy; approach guided by the JNC 7 protocol guidelines)

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Prevention
Official Title: Pre-clinical Cardiac Dysfunction Among Asymptomatic Hypertensive Patients in an Urban Emergency Department: Is a Program Focused on Early Detection and Blood Pressure Control Clinically and Cost Effective?

Resource links provided by NLM:


Further study details as provided by Wayne State University:

Primary Outcome Measures:
  • Clinically Significant Difference in Blood Pressure Lowering, Health Status and Quality of Life [ Time Frame: Baseline and 1 year ] [ Designated as safety issue: No ]
    To evaluate the ability of this program to produce (as a surrogate for heart failure prevention) a clinically significant difference in blood pressure lowering, health status and quality of life between the 2 treatment groups.


Secondary Outcome Measures:
  • Change in Prevalence of PCCD [ Time Frame: Baseline and 1 year ] [ Designated as safety issue: No ]
    To measure the change from baseline to 1 year prevalence of pre-clinical cardiac dysfunction in randomized study patients.


Enrollment: 123
Study Start Date: October 2008
Study Completion Date: June 2011
Primary Completion Date: May 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: BP < 140/90 mmHg
This arm will target a blood pressure of < 140/90 mmHg (or < 130/90 mmHg for diabetics or those with chronic kidney disease) as indicated by the 7th Joint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure.
Behavioral: Exercise
Blood pressure (BP) target of < 140/90 mmHg (or < 130/80 mmHg for diabetics or with chronic kidney disease) as recommended by the 7th Joint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure (JNC 7). BP control efforts will be open-label and will include a combination of recommended life-style modifications (i.e., exercise, weight loss, low sodium diet, smoking cessation), and pharmaceutical therapy based on JNC 7 protocol driven guidelines with the following adaptations: 1) use of a diuretic that is appropriate to renal function (eGFR< 40 ml/min/1.73 m2: a loop diuretic; eGFR> 40 ml/min/1.73 m2: a thiazide); 2) use of automated reminders if BP exceeds target for > 4 weeks without a medication titration; 3) use of a second diuretic when taking 4 or more anti-hypertensives without adequate achievement of BP target level; and 4) automated alerts to study personnel for potential drug interactions.
Behavioral: Weight Loss
Blood pressure (BP) target of < 140/90 mmHg (or < 130/80 mmHg for diabetics or with chronic kidney disease) as recommended by the 7th Joint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure (JNC 7). BP control efforts will be open-label and will include a combination of recommended life-style modifications (i.e., exercise, weight loss, low sodium diet, smoking cessation), and pharmaceutical therapy based on JNC 7 protocol driven guidelines with the following adaptations: 1) use of a diuretic that is appropriate to renal function (eGFR< 40 ml/min/1.73 m2: a loop diuretic; eGFR> 40 ml/min/1.73 m2: a thiazide); 2) use of automated reminders if BP exceeds target for > 4 weeks without a medication titration; 3) use of a second diuretic when taking 4 or more anti-hypertensives without adequate achievement of BP target level; and 4) automated alerts to study personnel for potential drug interactions.
Behavioral: Low Sodium Diet
Blood pressure (BP) target of < 140/90 mmHg (or < 130/80 mmHg for diabetics or with chronic kidney disease) as recommended by the 7th Joint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure (JNC 7). BP control efforts will be open-label and will include a combination of recommended life-style modifications (i.e., exercise, weight loss, low sodium diet, smoking cessation), and pharmaceutical therapy based on JNC 7 protocol driven guidelines with the following adaptations: 1) use of a diuretic that is appropriate to renal function (eGFR< 40 ml/min/1.73 m2: a loop diuretic; eGFR> 40 ml/min/1.73 m2: a thiazide); 2) use of automated reminders if BP exceeds target for > 4 weeks without a medication titration; 3) use of a second diuretic when taking 4 or more anti-hypertensives without adequate achievement of BP target level; and 4) automated alerts to study personnel for potential drug interactions.
Behavioral: Smoking Cessation
Blood pressure (BP) target of < 140/90 mmHg (or < 130/80 mmHg for diabetics or with chronic kidney disease) as recommended by the 7th Joint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure (JNC 7). BP control efforts will be open-label and will include a combination of recommended life-style modifications (i.e., exercise, weight loss, low sodium diet, smoking cessation), and pharmaceutical therapy based on JNC 7 protocol driven guidelines with the following adaptations: 1) use of a diuretic that is appropriate to renal function (eGFR< 40 ml/min/1.73 m2: a loop diuretic; eGFR> 40 ml/min/1.73 m2: a thiazide); 2) use of automated reminders if BP exceeds target for > 4 weeks without a medication titration; 3) use of a second diuretic when taking 4 or more anti-hypertensives without adequate achievement of BP target level; and 4) automated alerts to study personnel for potential drug interactions.
Drug: Pharmaceutical Therapy (no specific therapy; approach guided by the JNC 7 protocol guidelines)
Blood pressure (BP) target of < 140/90 mmHg (or < 130/80 mmHg for diabetics or with chronic kidney disease) as recommended by the 7th Joint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure (JNC 7). BP control efforts will be open-label and will include a combination of recommended life-style modifications (i.e., exercise, weight loss, low sodium diet, smoking cessation), and pharmaceutical therapy based on JNC 7 protocol driven guidelines with the following adaptations: 1) use of a diuretic that is appropriate to renal function (eGFR< 40 ml/min/1.73 m2: a loop diuretic; eGFR> 40 ml/min/1.73 m2: a thiazide); 2) use of automated reminders if BP exceeds target for > 4 weeks without a medication titration; 3) use of a second diuretic when taking 4 or more anti-hypertensives without adequate achievement of BP target level; and 4) automated alerts to study personnel for potential drug interactions.
Experimental: BP < 120/80 mmHg
This arm will target a more aggressive blood pressure target of < 120/80 mmHg.
Behavioral: Exercise
Blood pressure (BP) target will be < 120/80 mmHg. BP control efforts will be open-label and will include a combination of recommended life-style modifications (i.e., exercise, weight loss, low sodium diet, smoking cessation), and pharmaceutical therapy based on JNC 7 protocol driven guidelines with the following adaptations: 1) use of a diuretic that is appropriate to renal function (eGFR< 40 ml/min/1.73 m2: a loop diuretic; eGFR> 40 ml/min/1.73 m2: a thiazide); 2) use of automated reminders if BP exceeds target for > 4 weeks without a medication titration; 3) use of a second diuretic when taking 4 or more anti-hypertensives without adequate achievement of BP target level; and 4) automated alerts to study personnel for potential drug interactions.
Behavioral: Weight Loss
Blood pressure (BP) target will be < 120/80 mmHg. BP control efforts will be open-label and will include a combination of recommended life-style modifications (i.e., exercise, weight loss, low sodium diet, smoking cessation), and pharmaceutical therapy based on JNC 7 protocol driven guidelines with the following adaptations: 1) use of a diuretic that is appropriate to renal function (eGFR< 40 ml/min/1.73 m2: a loop diuretic; eGFR> 40 ml/min/1.73 m2: a thiazide); 2) use of automated reminders if BP exceeds target for > 4 weeks without a medication titration; 3) use of a second diuretic when taking 4 or more anti-hypertensives without adequate achievement of BP target level; and 4) automated alerts to study personnel for potential drug interactions.
Behavioral: Low Sodium Diet
Blood pressure (BP) target will be < 120/80 mmHg. BP control efforts will be open-label and will include a combination of recommended life-style modifications (i.e., exercise, weight loss, low sodium diet, smoking cessation), and pharmaceutical therapy based on JNC 7 protocol driven guidelines with the following adaptations: 1) use of a diuretic that is appropriate to renal function (eGFR< 40 ml/min/1.73 m2: a loop diuretic; eGFR> 40 ml/min/1.73 m2: a thiazide); 2) use of automated reminders if BP exceeds target for > 4 weeks without a medication titration; 3) use of a second diuretic when taking 4 or more anti-hypertensives without adequate achievement of BP target level; and 4) automated alerts to study personnel for potential drug interactions.
Behavioral: Smoking Cessation
Blood pressure (BP) target will be < 120/80 mmHg. BP control efforts will be open-label and will include a combination of recommended life-style modifications (i.e., exercise, weight loss, low sodium diet, smoking cessation), and pharmaceutical therapy based on JNC 7 protocol driven guidelines with the following adaptations: 1) use of a diuretic that is appropriate to renal function (eGFR< 40 ml/min/1.73 m2: a loop diuretic; eGFR> 40 ml/min/1.73 m2: a thiazide); 2) use of automated reminders if BP exceeds target for > 4 weeks without a medication titration; 3) use of a second diuretic when taking 4 or more anti-hypertensives without adequate achievement of BP target level; and 4) automated alerts to study personnel for potential drug interactions.
Drug: Pharmaceutical Therapy (no specific therapy; approach guided by the JNC 7 protocol guidelines)
Blood pressure (BP) target will be < 120/80 mmHg. BP control efforts will be open-label and will include a combination of recommended life-style modifications (i.e., exercise, weight loss, low sodium diet, smoking cessation), and pharmaceutical therapy based on JNC 7 protocol driven guidelines with the following adaptations: 1) use of a diuretic that is appropriate to renal function (eGFR< 40 ml/min/1.73 m2: a loop diuretic; eGFR> 40 ml/min/1.73 m2: a thiazide); 2) use of automated reminders if BP exceeds target for > 4 weeks without a medication titration; 3) use of a second diuretic when taking 4 or more anti-hypertensives without adequate achievement of BP target level; and 4) automated alerts to study personnel for potential drug interactions.

  Eligibility

Ages Eligible for Study:   35 Years to 75 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Blood pressure > or = 140/90 after 1 hour
  • Asymptomatic state as defined by Goldman Specific Activity Scale

Exclusion Criteria:

  • Dyspnea (exertional or nocturnal) or chest pain as a primary or secondary chief complaint
  • Prior history of heart failure, coronary artery disease, myocardial infarction, cardiomyopathy, valvular heart disease or renal failure (with current, previous, or planned future dialysis)
  • Patients with acute illness or injury which necessitates hospital admission
  • Standing relationship with usual source of health care (i.e., primary care provider)
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00689819

Locations
United States, Michigan
Detroit Receiving Hospital
Detroit, Michigan, United States, 48201
Sponsors and Collaborators
Wayne State University
Robert Wood Johnson Foundation
Investigators
Principal Investigator: Phillip D. Levy, M.D., M.P.H. Wayne State University Department of Emergency Medicine
  More Information

No publications provided

Responsible Party: Phillip D. Levy, Research Investigator, Wayne State University
ClinicalTrials.gov Identifier: NCT00689819     History of Changes
Other Study ID Numbers: 0803305872
Study First Received: June 2, 2008
Results First Received: June 14, 2013
Last Updated: November 7, 2013
Health Authority: United States: Institutional Review Board

Keywords provided by Wayne State University:
Hypertension
High blood pressure
Pre-clinical cardiac dysfunction

Additional relevant MeSH terms:
Hypertension
Hypertrophy
Cardiovascular Diseases
Pathological Conditions, Anatomical
Vascular Diseases

ClinicalTrials.gov processed this record on October 21, 2014