Predictives Factors of Cardiac Resynchronization Therapy: a Multimodal Analysis Using 2D Speckle Tracking Echocardiography Coupled With MIBG Myocardial Scintigraphy and Heart Failure Biomarkers — PREFAC-CRT

Heart Failure Clinical Trial

Official title:
Predictives Factors of Cardiac Resynchronization Therapy: a Multimodal Analysis Using 2D Speckle Tracking Echocardiography Coupled With MIBG Myocardial Scintigraphy and Heart Failure Biomarkers

Status Recruiting

Clinical Trial Summary

Cardiac resynchronization therapy (CRT) is one of the lastest recommended treatments in patients with refractory symptomatic chronic heart failure with reduced ejection fraction (HFREF). Despite clear guidelines 20 to 40 % of implanted patients are not clinically ameliorated. They are called the "non responders". Patient selection seams to be one of the key to improve the efficiency of CRT. This protocol try to assess positive predictive factors to CRT by a multimodal approach.

Clinical Trial Description

Cardiac resynchronization therapy (CRT) is a validated HFREF therapy. Unfortunately 20 to 40 % of implanted patients according to the guidelines do not have an improvement in their condition. The detection of "non responders" is imperfect. The selection of eligible patients to cardiac resynchronization is defined by symptomatic patients (NYHA class II to IV), a reduced Left Ventricle ejection fraction and by the duration of the left bundle branch block. No other parameter (clinical, electrical, echocardiographical) have been identified as positive predictive factor to cardiac resynchronization therapy.

The aim of the investigators study is to identify positive predictive parameters to CRT.

The investigators study included all patients eligible to CRT according to the guidelines of the European Society of Cardiology in four French centers (Clermont-Ferrand, Bordeaux, Nancy, Pasteur Toulouse).

1. At baseline a preimplantation evaluation is performed: clinical examination, laboratory assay (biological collection), echocardiography-2D Strain at rest and stress, myocardial perfusion scintigraphy and MIBG.

2. At 6 months, response to CRT is the primary endpoint. It is a composite primary endpoint, including modification of: Quality of Life Score (MINNESOTA scale) , NYHA functional status , 6-minute walk test and volume of the left ventricle. Three hundred patients are expected over a period of 24 months. ;

Study Design

N/A

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT02018029
Study type	Observational
Source	University Hospital, Clermont-Ferrand
Contact	Patrick LACARIN
Phone	04 73 75 11 95
Email	placarin@chu-clermontferrand.fr
Status	Recruiting
Phase	N/A
Start date	March 2013
Completion date	December 2015

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.