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Serial Hybrid Atrial Fibrillation Ablation (SHAFT)

This study is currently recruiting participants. (see Contacts and Locations)
Verified July 2016 by Medisch Spectrum Twente
Information provided by (Responsible Party):
B. Oude Velthuis, Medisch Spectrum Twente Identifier:
First received: April 20, 2012
Last updated: July 6, 2016
Last verified: July 2016
Treatment of (long-standing) persistent atrial fibrillation (AF) remains cumbersome and the surgical (epicardial) approach seems to be the most effective. Still, however a significant amount of failures exist which is mostly due to incompleteness of the surgical ablation lines. Checking, and if necessary additional ablation, of these lines afterwards endocardially by the cardiologist (the so-called serial hybrid approach) could overcome this problem.

Condition Intervention
Atrial Fibrillation
Procedure: Epicardial (surgical) ablation
Procedure: Hybrid

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Serial Hybrid Atrial Fibrillation Ablation

Resource links provided by NLM:

Further study details as provided by Medisch Spectrum Twente:

Primary Outcome Measures:
  • Atrial fibrillation Freedom [ Time Frame: 12 months ]
    left sided atrial flutter and left atrial tachycardia

Secondary Outcome Measures:
  • re-isolation [ Time Frame: 8-10 weeks ]
    number of pulmonary veins needing re-isolation by the EP

  • Percentage of cross-over [ Time Frame: 1 year ]
    Percentage of cross-over from the surgical arm alone to surgery and serial hybrid ablation.

  • Complications [ Time Frame: 1 year ]
    Number of complications and thrombo-embolic events in both groups

  • Atrial fibrillation Burden [ Time Frame: 1 year ]
    Burden of AF in both groups if AF is still present.

Estimated Enrollment: 162
Study Start Date: August 2012
Estimated Study Completion Date: December 2017
Estimated Primary Completion Date: December 2016 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Epicardial (surgical) ablation
Epicardial Pulmonary vein isolation
Procedure: Epicardial (surgical) ablation
  • Pulmonary vein isolation with bipolar clamps and bipolar box lesion
  • Epicardial atrial appendage closure
Experimental: Hybrid
Epicardial (surgical) ablation & Endocardial assessment
Procedure: Hybrid

Epicardial (surgical) ablation

  • Pulmonary vein isolation with bipolar clamps and bipolar box lesion
  • Epicardial atrial appendage closure

Endocardial assessment after 6-8 weeks, checking for isolation and if necessary touch up by RF ablation


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

Inclusion Criteria:

  • patients are screened and accepted for pulmonary vein isolation according to the current guidelines
  • long standing persistent or persistent AF as defined in the guidelines
  • left atrial size needs to be more than >46 mm on long axis or >35 cc/m2
  • CHADSVASC score should be more than 0 as an indicator of a substantial substrate for atrial fibrillation.

Exclusion Criteria:

  • Significant coronary artery disease has to be excluded as a trigger for AF by means of cardiac CT, if necessary a coronary angiogram will be performed.
  • Previous PVI ablation (epicardial or endocardial) or cardiac surgery.
  • Significant valvular disease present on echo.
  • Concomitant cardiac surgery needed.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01582828

Contact: Jurren van Opstal, MD PhD +31534872110
Contact: Harald Verheij +31534872108

Medisch Spectrum Twente Recruiting
Enschede, OV, Netherlands, 7500AB
Contact: Jurren van Opstal, MD PhD    +31534872110   
Contact: Harald Verheij    +31534872108   
Sub-Investigator: Bob Oude Velthuis, MD MSc         
Sponsors and Collaborators
Medisch Spectrum Twente
Principal Investigator: Jurren van Opstal, MD PhD Medisch Spectrum Twente
  More Information

Responsible Party: B. Oude Velthuis, Research fellow electrophysiology, Medisch Spectrum Twente Identifier: NCT01582828     History of Changes
Other Study ID Numbers: SHAFT-01
Study First Received: April 20, 2012
Last Updated: July 6, 2016

Keywords provided by Medisch Spectrum Twente:

Additional relevant MeSH terms:
Atrial Fibrillation
Arrhythmias, Cardiac
Heart Diseases
Cardiovascular Diseases
Pathologic Processes processed this record on May 25, 2017