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Temporary Epicardial Cardiac Resynchronisation.

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified June 2011 by Cardiff and Vale University Health Board.
Recruitment status was:  Recruiting
Information provided by:
Cardiff and Vale University Health Board Identifier:
First received: December 4, 2009
Last updated: June 22, 2011
Last verified: June 2011

This trial will investigate the clinical and haemodynamic effects of temporary biventricular pacing after cardiac surgery. Subjects with poor left ventricular systolic function will receive either temporary biventricular pacing or 'standard' post-operative pacing for 48 hours.

The investigators hypothesis that reversal of cardiac dyssynchrony will improve tissue perfusion and cardiac haemodynamics after surgical revascularisation. This will shorten post-operative recovery in cardiac ITU.

Condition Intervention
Cardiac Failure Device: Biventricular pacing

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Randomised Study of Temporary Epicardial Cardiac Resynchronisation Versus Conventional Right Ventricular Pacing in Cardiac Surgical Patients.

Further study details as provided by Cardiff and Vale University Health Board:

Primary Outcome Measures:
  • Duration of Level 3 care after cardiac surgery, as defined by the 'Designed for Life' document- Welsh Assembly Government. [ Time Frame: 30 days ]

Secondary Outcome Measures:
  • Mortality [ Time Frame: 30 days ]
  • Haemodynamic support after surgery (inotropes/ intra-aortic balloon pump.) [ Time Frame: 30 days ]
  • Vascular event (stroke or myocardial infarction.) [ Time Frame: 30 days ]
  • post operative arrhythmia. [ Time Frame: 48 hours ]
  • Haemodynamic measurements of cardiac status (Pulmonary arterial catheter, echo data and FloTrac monitor). [ Time Frame: 48 hours ]
  • Renal function and requirement for haemofiltration. [ Time Frame: 30 days ]
  • Biomarkers (Troponin T and NT Pro BNP.) [ Time Frame: 72 hours ]
  • Re-intubation or re-sternotomy. [ Time Frame: 30 days ]

Estimated Enrollment: 100
Study Start Date: December 2009
Estimated Study Completion Date: January 2012
Estimated Primary Completion Date: January 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Standard pacing
Standard pacing settings prescribed by the cardiac surgeon or intensivist after revascularisation.
Device: Biventricular pacing
Optimised temporary biventricular pacing.
Other Name: Standard pacing
Active Comparator: BiVentricular pacing (BiV).
The group of patients receiving biventricular pacing after cardiac surgery.
Device: Biventricular pacing
Optimised temporary biventricular pacing.
Other Name: Standard pacing

Detailed Description:

Patients with poor left ventricular (LV) function are at higher risk of complications after cardiac surgery, compared to patients with preserved LV function. The higher complication rates also lead to prolonged Cardiac Intensive Care (CITU) admissions for monitoring and multi-organ support.

The investigators hypothesise that BiV pacing will reverse cardiac dyssynchrony and improve target organ perfusion. This will be significantly reduced the post operative requirement for Level 3 CITU care.

This study will compare 48 hours of temporary biventricular (BiV) pacing to enhance cardiac function against standard post-operative pacing, in patients with poor LV function undergoing cardiac surgery. Temporary biventricular (BiV) pacing will be achieved with the addition of a third pacing electrode attached to the left ventricle. Using a pulmonary arterial catheter the interventricular (VV) delay will be adjusted to yield the maximum cardiac output at constant heart rate- sequential BiV pacing. A pilot study conducted at the University Hospital of Wales (UHW) showed that this approach is likely to be successful.

The primary endpoint of the study will be the mean duration of Level 3 CITU care required by patients after cardiac surgery. Secondary endpoints will include: haemodynamic improvement with BiV pacing; post-operative renal function; atrial fibrillation (AF)/ ventricular arrhythmias; post operative inotropic requirements and changes in biomarkers- NT Pro BNP and Troponin T.


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

Inclusion Criteria:

  • Coronary disease scheduled for surgical revascularisation. Ejection fraction <35% (simpson's method.)

Exclusion Criteria:

  • Permanent pacemaker or implantable defibrillator. Dialysis dependent renal failure. Permanent atrial fibrillation.
  Contacts and Locations
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Please refer to this study by its identifier: NCT01027299

Contact: Zaheer R Yousef, MD +442920744474

United Kingdom
Cardiff and Vale University Health Board. Recruiting
Cardiff, United Kingdom, CF14 4XW
Contact: Zaheer R Yousef, MD    +442920744474   
Sub-Investigator: Stuart J Russell, MB BS         
Sub-Investigator: Alan Fraser, MD         
Sub-Investigator: Christine Tan, MD         
Principal Investigator: Zaheer r Yousef, MD         
Morriston Hospital Recruiting
Swansea, United Kingdom, SA6 6NL
Contact: Afzal Zaidi, MD    +4417920 702222 ext 3243   
Principal Investigator: Afzal Zaidid, MD         
Sub-Investigator: Stuart J Russell, MBBS         
Sponsors and Collaborators
Cardiff and Vale University Health Board
Study Director: Zaheer R Yousef, MD Cardiff and Vale Local Heath Board, Cardiff.
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Dr Zaheer Yousef, Cardiff and Vale University Health Board Identifier: NCT01027299     History of Changes
Other Study ID Numbers: 09/CAD/4628
Study First Received: December 4, 2009
Last Updated: June 22, 2011

Keywords provided by Cardiff and Vale University Health Board:
cardiac failure
thoracic surgery
cardiac pacing, artificial

Additional relevant MeSH terms:
Heart Failure
Heart Diseases
Cardiovascular Diseases processed this record on July 24, 2017