St. Vincent's Screening To Prevent Heart Failure Study (STOP-HF)

This study is currently recruiting participants.
Verified December 2012 by St Vincent's University Hospital, Ireland
Sponsor:
Collaborators:
Heartbeat Trust
Crofton Cardiac Centre, Dublin
University College Dublin
University College Cork
Information provided by (Responsible Party):
Mark Ledwidge, St Vincent's University Hospital, Ireland
ClinicalTrials.gov Identifier:
NCT00921960
First received: June 16, 2009
Last updated: December 11, 2012
Last verified: December 2012
  Purpose

The STOP-HF study is a prospective, randomized, controlled trial recruiting asymptomatic individuals with risk factors for left ventricular dysfunction from 50 primary care clinics in Dublin and south east Ireland. It is designed to determine whether using natriuretic peptide measurement as a screening tool following a general cardiovascular risk factor screen will reduce the prevalence and severity of ventricular dysfunction in conjunction with specialist follow-up at St. Vincent's University Hospital.


Condition Intervention Phase
Left Ventricular Dysfunction
Myocardial Infarction
Hypertension
Diabetes
Obesity
Other: Intervention Care
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Prevention
Official Title: St. Vincent's Screening To Prevent Heart Failure (STOP-HF) Study Using Natriuretic Peptides to Identify and Prevent Progression of Left Ventricular Dysfunction in Community Based, Asymptomatic, At-risk Individuals.

Resource links provided by NLM:


Further study details as provided by St Vincent's University Hospital, Ireland:

Primary Outcome Measures:
  • Prevalence and severity of LVD [ Time Frame: 5 year ] [ Designated as safety issue: Yes ]

Estimated Enrollment: 1500
Study Start Date: January 2005
Estimated Study Completion Date: July 2017
Estimated Primary Completion Date: December 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
No Intervention: Usual Care
Usual Care will involve ongoing management from the general practitioner, nurse-led assessment of cardiovascular risk at the general practice and referral to specialist services as deemed necessary.
Intervention
Intervention Care is defined as a collaborative cardiovascular management between primary care and specialist hospital based services. This will involve natriuretic peptide guided evaluation of LVD and follow-up as appropriate
Other: Intervention Care
Intervention Care is defined as a collaborative cardiovascular management between primary care and specialist hospital based services. This will involve natriuretic peptide guided evaluation of LVD and follow-up as appropriate - for example including echocardiographic assessment of left ventricular systolic dysfunction and appropriate pharmacotherapy.
Other Names:
  • Screening
  • Health services delivery intervention

  Hide Detailed Description

Detailed Description:

A large proportion of the population has substantial left ventricular dysfunction (LVD) and do not have symptoms (Stage B heart failure). For many of these patients, if identified and treated appropriately, it is possible to prevent the subsequent development of heart failure (HF). Although the current gold standard for detection of LVD is echocardiography, it is expensive and impractical for mass screening.

Natriuretic peptides are attractive candidates for screening populations for asymptomatic LVD particularly because of high negative predictive values. Furthermore, some studies have shown that, in the right setting, screening with natriuretic peptides might prove cost effective in combination with echocardiography for patients with elevated levels.

However, in common with many accepted screening strategies, there are no randomised studies which show that screening the population with natriuretic peptides for asymptomatic LVF alters the natural history of the condition.

From a large, community based cardiovascular risk screening programme including more than 13,000 patients, patients in the catchment area of St Vincent's University Hospital are invited to participate in the STOP-HF study. The objective of this work is to determine whether or not using natriuretic peptide screening in conjunction with specialist follow-up will reduce the prevalence and severity of LVD in a well-defined, at-risk, primary care population. It also aims to: evaluate the natural history of natriuretic peptides over time in this population; to clarify optimal screening cut-offs for the detection of LVD; to evaluate the clinical, pharmacological, biochemical, genetic and proteomic determinants of natriuretic peptides in this setting; to determine whether the clinical benefits of the STOP HF screening programme, if any, are cost effective.

The study design is prospective, randomised and parallel group.

The primary endpoint is the prevalence and severity LVD after 5 years of follow up. Secondary endpoints include: the natural history of natriuretic peptides; the relationship between natriuretic peptides and severity of LVD, death, hospital admissions; clinical, demographic, biochemical, pharmacological, genomic, proteomic, metabolomic determinants of natriuretic peptides; screening cost-effectiveness.

Participants who fulfill entry criteria at baseline will sign an informed consent and will be randomised onto the Usual Care or Intervention Care arm of the study. Usual care is defined as continued management of the patient by the primary care services using standard risk factor monitoring and intervention strategies. Intervention Care is defined as a collaborative cardiovascular management between primary care and specialist hospital based services. All participants will receive an intensive education session from a cardiovascular nurse on their risk factors and advice on healthy dietary and lifestyle habits.

There will be 2 years of enrollment with annual review and 5 years of follow-up to the primary endpoint. Permission has been received to extend the follow up period to 10 years. Regardless of randomisation, all patients receive full clinical and laboratory assessment at baseline and on completion of the STOP HF study (year 5). Additionally, all participants will receive echocardiography assessment during and at the conclusion of the study.

Data collection:

Data will be collected on all participants regarding their medical history and current medications. The source of data collection will be from medical records kept at the primary care practices and from patient interview. All participants will receive a booklet in which they will be asked to record any visits to their primary care practitioner, alterations in medications, new diagnoses and hospital admissions. Local hospital discharge records will be screened to detect any events throughout the course of the study.

Clinical Assessment:

At annual intervals, the cardiovascular research nurse will conduct clinical assessments on all participants including weight, abdominal girth measurement, blood pressure (triplicate measurements while lying in supine position), heart rate and observe for evidence of limb oedema. The nurse will also question the participants to investigate for symptoms of dyspnoea, angina, palpitations, orthopnoea, palpitations and fatigue.

Blood sampling and handling:

Peripheral venous blood samples will be drawn on all participants at annual intervals. Samples to assess natriuretic peptides will be drawn into vacutainers containing EDTA and samples to assess renal function, collagen turnover and lipid profile will be collected in vacutainers containing lithium heparin. BNP and Lipid profile assessment will be analysed using point of care meters, Biosite (Triage, USA) and Cholestech respectively. Each of the remaining samples will be centrifuged for 10 minutes and the serum will be then aliquoted and stored at -80°C before analysis of biochemical, genomic, proteomic and metabolomic markers.

Echocardiographic Doppler analysis:

Two-dimensional echocardiographic imaging, targeted M-mode and Doppler ultrasound measurements will be obtained in each patient. M-mode measurements are taken according to the guidelines laid down by the American Society of Echocardiography. All echocardiographic data will represent the mean of 3 measurements on different cardiac cycles. It is the aim of the STOP HF investigators that a single observer will conduct all measurements, recording archive images in a blinded fashion.

  Eligibility

Ages Eligible for Study:   40 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • ≥40 Years of age
  • with risk factors for LVD including:

    • hypertension (medicated for ≥ 1 month)
    • hypercholesterolemia
    • obesity
    • coronary artery disease (confirmed by angiography)
    • diabetes mellitus
    • arrhythmia
    • valvular abnormalities

Exclusion Criteria:

  • failure or unwilling to provide informed consent
  • known ventricular dysfunction (confirmed by angiography or echocardiography)
  • previous documented episode of heart failure
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00921960

Contacts
Contact: Kenneth M McDonald, MD +35312304629 kenneth.mcdonald@ucd.ie
Contact: Mark T Ledwidge, PhD +35312304629 mark@heartbeat-trust.org

Locations
Ireland
St Vincent's University Hospital Recruiting
Dublin, Ireland
Sub-Investigator: Carmel M Conlon, BSc         
Sub-Investigator: Ian M Dawkins, PhD         
Sub-Investigator: Donal O'Shea, MD         
Sub-Investigator: Elaine Tallon, MSc         
Sponsors and Collaborators
St Vincent's University Hospital, Ireland
Heartbeat Trust
Crofton Cardiac Centre, Dublin
University College Dublin
University College Cork
Investigators
Principal Investigator: Kenneth M McDonald, MD St Vincent's University Hospital
Principal Investigator: Mark T Ledwidge, PhD St Vincent's University Hospital
  More Information

No publications provided by St Vincent's University Hospital, Ireland

Additional publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Mark Ledwidge, Research Director, Heart Failure Unit St Vincent's University Hospital, St Vincent's University Hospital, Ireland
ClinicalTrials.gov Identifier: NCT00921960     History of Changes
Other Study ID Numbers: SVUH - HFU - 020
Study First Received: June 16, 2009
Last Updated: December 11, 2012
Health Authority: Ireland: Ministry of Health
Ireland: Irish Medicines Board

Keywords provided by St Vincent's University Hospital, Ireland:
Left ventricular dysfunction
Left ventricular systolic dysfunction
Left ventricular diastolic dysfunction
Myocardial Infarction
Hypertension
Diabetes
Obesity
Dyslipidaemia
Heart Failure
Prevention
Screening
Cardiovascular Risk Factors
Echocardiography
Natriuretic Peptides

Additional relevant MeSH terms:
Diabetes Mellitus
Heart Failure
Hypertension
Infarction
Myocardial Infarction
Obesity
Ventricular Dysfunction, Left
Ventricular Dysfunction
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Heart Diseases
Cardiovascular Diseases
Vascular Diseases
Ischemia
Pathologic Processes
Necrosis
Myocardial Ischemia
Overnutrition
Nutrition Disorders
Overweight
Body Weight
Signs and Symptoms

ClinicalTrials.gov processed this record on April 20, 2014