The Effect of an Azygos Vein Coil on Defibrillation Threshold

Completed · Not applicable

Conditions studied: Heart Failure

In brief

When implantable cardiac defibrillators are implanted (ICDs), the defibrillation threshold (DFT), of the amount of energy required to effectively terminate life-threatening arrhythmias is determined. The device is then programmed to discharge a larger amount of energy in order to provide a safety margin. In some patients, the DFT is so high, that an adequate safety margin is not programmable. Placement of a defibrillation lead in the azygos vein has been found to be helpful in these patients. This goal of this trial is to attempt to quantify the average reduction in the DFT (if any) that results from the addition of the azygos lead.

Key facts

Study ID

NCT00798174

Run by

Washington University School of Medicine

People needed

32

Starts

2008-12-15

Expected to finish

2009-11-18

Last updated by the study team

2018-09-28

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Any patient undergoing elective placement of an ICD for the primary or secondary prevention of sudden cardiac death is eligible. Exclusion criteria include any contraindication to endovascular ICD implantation which includes but is not limited to; active infection, occluded venous access, or inability to perform DFT testing secondary to the inability to sedate the patient or hemodynamic compromise.

You may not qualify if…

• Any contraindication to ICD or the inability to place an azygos vein coil.

Where it is running

• Washington University — St Louis, Missouri, United States

Full record on ClinicalTrials.gov

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