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Narrow QRS Ischemic Patients Treated With Cardiac Resynchronization Therapy (NARROW CRT) (NARROW-CRT)

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ClinicalTrials.gov Identifier: NCT01577446
Recruitment Status : Completed
First Posted : April 13, 2012
Last Update Posted : October 18, 2016
Sponsor:
Information provided by (Responsible Party):
Carmine Muto, Ospedale Santa Maria di Loreto Mare

Brief Summary:
Current recommendations require a QRS duration of ≥120ms as a condition for prescribing cardiac resynchronization therapy (CRT). This study was designed to test the hypothesis that patients with heart failure of ischemic origin, current indications for defibrillator implantation and QRS <120ms may benefit from CRT in the presence of marked mechanical dyssynchrony.

Condition or disease Intervention/treatment Phase
Heart Failure, Systolic Procedure: cardiac resynchronization therapy Not Applicable

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 120 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Participant)
Primary Purpose: Treatment
Official Title: Narrow QRS Ischemic Patients Treated With Cardiac Resynchronization Therapy
Study Start Date : January 2008
Actual Primary Completion Date : August 2012

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Heart Failure
U.S. FDA Resources

Arm Intervention/treatment
Experimental: CRT
The CRT group undergoes implantation of a CRT defibrillator
Procedure: cardiac resynchronization therapy
Implantation of a CRT defibrillator with a standard right atrial, right ventricular defibrillator and left ventricular leads
No Intervention: no-CRT
The no-CRT group receives a dual-chamber defibrillator



Primary Outcome Measures :
  1. heart failure clinical composite score [ Time Frame: 12 months ]
    Patients are classified according to a score, which assigns subjects to one of three response groups — improved, worsened, or unchanged. Patients are judged to be worsened if they died or were hospitalized because of worsening heart failure (at any time during the 12 months), or demonstrated worsening in NYHA functional class at their 12-month visit. Patients are judged to be improved if they had not worsened and had demonstrated improvement in NYHA functional class at 12 months. Patients who are not worsened or improved are classified as unchanged.


Secondary Outcome Measures :
  1. time to the first heart failure hospitalization or death [ Time Frame: up to 30 months ]
    Kaplan-Meier analysis is used to analyze time to death or first heart failure hospitalization



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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • NHYA class II-III heart failure
  • ischemic cardiomyopathy
  • ejection fraction of 35% or less
  • QRS interval of 120ms or less
  • evidence of mechanical dyssynchrony as measured on echocardiography

Exclusion Criteria:

  • conventional indication for cardiac pacing
  • persistent atrial fibrillation
  • life expectancy lower than 1 year

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01577446


Locations
Italy
Ospedale Santa Maria di Loreto Mare
Naples, Italy
Sponsors and Collaborators
Ospedale Santa Maria di Loreto Mare
Investigators
Study Chair: Carmine Muto, MD Ospedale Santa Maria di Loreto Mare

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Carmine Muto, Electrophysiology and Pacing Unit Director, Ospedale Santa Maria di Loreto Mare
ClinicalTrials.gov Identifier: NCT01577446     History of Changes
Other Study ID Numbers: LM-002
First Posted: April 13, 2012    Key Record Dates
Last Update Posted: October 18, 2016
Last Verified: October 2016

Keywords provided by Carmine Muto, Ospedale Santa Maria di Loreto Mare:
CRT
heart failure
narrow QRS
dyssynchrony

Additional relevant MeSH terms:
Heart Failure
Heart Failure, Systolic
Heart Diseases
Cardiovascular Diseases