LV Endocardial Cardiac Resynchronisation Therapy
ENDO-CRT
A Randomised Double-blinded Cross Over Study to Evaluate the Improvement of Left Ventricular Systolic Failure Using Targeted Left Ventricular Endocardial Lead Placement in Cardiac Resynchronisation Therapy.
2 other identifiers
interventional
32
1 country
1
Brief Summary
Cardiac resynchronisation therapy (CRT) is an established treatment for severe systolic heart failure with well documented benefits in symptom improvement and reduction of morbidity and mortality. However, upto 30% of patients do not respond to treatment despite fulfilling the recommended indications. Lack of clinical response may be the result of imperfect left ventricular lead placement in the veins around the heart with conventional techniques. Optimum lead placement may constrained by coronary venous anatomy and may overlie scarred heart muscle or may not be at the site of latest electrical depolarisation. In a further 10% of patients, conventional left ventricular lead placement is not possible for other technical reasons. Left ventricular endocardial lead placement may overcome the limitations and allow placement to be guided by echocardiography, electrical mapping and the pattern of heart muscle scarring. We aim to investigate if targeted left ventricular endocardial lead placement improves exercise capacity, heart failure symptoms, heart function and size, heart pumping efficiency and biochemical markers of heart strain. Each parameter will be assessed independently and as part of a composite cardiac performance score. Patients with heart failure will be enrolled who require an endocardial left ventricular lead on clinical grounds as either conventional left ventricular lead implantation has technically failed or they have clinically non-responded to CRT.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable heart-failure
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
April 1, 2014
CompletedFirst Submitted
Initial submission to the registry
June 24, 2014
CompletedFirst Posted
Study publicly available on registry
June 25, 2014
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 1, 2017
CompletedJune 27, 2014
June 1, 2014
3 years
June 24, 2014
June 26, 2014
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Cardiopulmonary Exercise Test
Improvement in peak oxygen consumption
3 months
Secondary Outcomes (7)
New NYHA Class
3 months
6 minute walk
3 months
Quality of life
3 months
Echocardiography
3 months
Digital photoplethysmography
3 months
- +2 more secondary outcomes
Other Outcomes (3)
Freedom from adverse events
1 year
Medium term clinical outcomes
6 months
Targeting success
Intra operative
Study Arms (2)
Active Bi-ventricular Pacing
ACTIVE COMPARATORNo Biventricular pacing
PLACEBO COMPARATORInterventions
The left ventricular endocardial lead will be passed through the intra-atrial septum
Eligibility Criteria
You may qualify if:
- Age greater than 18 years
- NYHA class II-IV
- LVEF ≤35%
- QRS ≥120 milliseconds
- Optimal tolerated medical therapy
- Either unable to position an LV lead via the standard coronary sinus on CRT implantation
- OR Recipient of a CRT-P or CRT-D system for greater than 6 months for standard indications AND limited improvement or worsened clinical status despite device optimisation
- Informed consent
You may not qualify if:
- Life-expectancy less than 1 year due to concomitant, non-cardiovascular disorders
- Previous atrial septal defect device closure.
- Chronic renal dialysis and End stage liver disease
- History of stroke, myocardial infarction, unstable angina, Coronary artery bypass grafting and coronary stenting within the last 3 months
- Presence of correctable valvular disease (aortic/mitral)
- Mitral valve prosthesis.
- Contra indication to vitamin K antagonist
- Unresolved intra-cardiac thrombus
- Pregnancy
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Royal Brompton and Harefield NHS Foundation Trust
London, United Kingdom
Related Publications (10)
Cleland JG, Daubert JC, Erdmann E, Freemantle N, Gras D, Kappenberger L, Tavazzi L; Cardiac Resynchronization-Heart Failure (CARE-HF) Study Investigators. The effect of cardiac resynchronization on morbidity and mortality in heart failure. N Engl J Med. 2005 Apr 14;352(15):1539-49. doi: 10.1056/NEJMoa050496. Epub 2005 Mar 7.
PMID: 15753115BACKGROUNDMcMurray JJ, Adamopoulos S, Anker SD, Auricchio A, Bohm M, Dickstein K, Falk V, Filippatos G, Fonseca C, Gomez-Sanchez MA, Jaarsma T, Kober L, Lip GY, Maggioni AP, Parkhomenko A, Pieske BM, Popescu BA, Ronnevik PK, Rutten FH, Schwitter J, Seferovic P, Stepinska J, Trindade PT, Voors AA, Zannad F, Zeiher A; ESC Committee for Practice Guidelines. ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure 2012: The Task Force for the Diagnosis and Treatment of Acute and Chronic Heart Failure 2012 of the European Society of Cardiology. Developed in collaboration with the Heart Failure Association (HFA) of the ESC. Eur Heart J. 2012 Jul;33(14):1787-847. doi: 10.1093/eurheartj/ehs104. Epub 2012 May 19. No abstract available.
PMID: 22611136BACKGROUNDGras D, Bocker D, Lunati M, Wellens HJ, Calvert M, Freemantle N, Gervais R, Kappenberger L, Tavazzi L, Erdmann E, Cleland JG, Daubert JC; CARE-HF Study Steering Committee and Investigators. Implantation of cardiac resynchronization therapy systems in the CARE-HF trial: procedural success rate and safety. Europace. 2007 Jul;9(7):516-22. doi: 10.1093/europace/eum080. Epub 2007 May 31.
PMID: 17540662BACKGROUNDJais P, Douard H, Shah DC, Barold S, Barat JL, Clementy J. Endocardial biventricular pacing. Pacing Clin Electrophysiol. 1998 Nov;21(11 Pt 1):2128-31. doi: 10.1111/j.1540-8159.1998.tb01133.x.
PMID: 9826866BACKGROUNDvan Gelder BM, Scheffer MG, Meijer A, Bracke FA. Transseptal endocardial left ventricular pacing: an alternative technique for coronary sinus lead placement in cardiac resynchronization therapy. Heart Rhythm. 2007 Apr;4(4):454-60. doi: 10.1016/j.hrthm.2006.11.023. Epub 2006 Nov 29.
PMID: 17399634BACKGROUNDNuta B, Lines I, MacIntyre I, Haywood GA. Biventricular ICD implant using endocardial LV lead placement from the left subclavian vein approach and transseptal puncture via the transfemoral route. Europace. 2007 Nov;9(11):1038-40. doi: 10.1093/europace/eum176. Epub 2007 Aug 17.
PMID: 17704095BACKGROUNDJais P, Takahashi A, Garrigue S, Yamane T, Hocini M, Shah DC, Barold SS, Deisenhofer I, Haissaguerre M, Clementy J. Mid-term follow-up of endocardial biventricular pacing. Pacing Clin Electrophysiol. 2000 Nov;23(11 Pt 2):1744-7. doi: 10.1111/j.1540-8159.2000.tb07010.x.
PMID: 11139915BACKGROUNDSpragg DD, Dong J, Fetics BJ, Helm R, Marine JE, Cheng A, Henrikson CA, Kass DA, Berger RD. Optimal left ventricular endocardial pacing sites for cardiac resynchronization therapy in patients with ischemic cardiomyopathy. J Am Coll Cardiol. 2010 Aug 31;56(10):774-81. doi: 10.1016/j.jacc.2010.06.014.
PMID: 20797490BACKGROUNDKhan FZ, Virdee MS, Palmer CR, Pugh PJ, O'Halloran D, Elsik M, Read PA, Begley D, Fynn SP, Dutka DP. Targeted left ventricular lead placement to guide cardiac resynchronization therapy: the TARGET study: a randomized, controlled trial. J Am Coll Cardiol. 2012 Apr 24;59(17):1509-18. doi: 10.1016/j.jacc.2011.12.030. Epub 2012 Mar 7.
PMID: 22405632BACKGROUNDSaba S, Marek J, Schwartzman D, Jain S, Adelstein E, White P, Oyenuga OA, Onishi T, Soman P, Gorcsan J 3rd. Echocardiography-guided left ventricular lead placement for cardiac resynchronization therapy: results of the Speckle Tracking Assisted Resynchronization Therapy for Electrode Region trial. Circ Heart Fail. 2013 May;6(3):427-34. doi: 10.1161/CIRCHEARTFAILURE.112.000078. Epub 2013 Mar 8.
PMID: 23476053BACKGROUND
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Tom Wong, MD FESC
Royal Brompton and Harefield NHS Foundation Trust
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- CROSSOVER
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
June 24, 2014
First Posted
June 25, 2014
Study Start
April 1, 2014
Primary Completion
April 1, 2017
Last Updated
June 27, 2014
Record last verified: 2014-06