Selected Site Pacing to Avoid Phrenic Nerve Stimulation in Cardiac Resynchronization Patients With Quadripolar Left Ventricular Leads

NCT ID: NCT01484613

Last Updated: 2019-02-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

337 participants

Study Classification

OBSERVATIONAL

Study Start Date

2011-11-30

Study Completion Date

2014-06-30

Brief Summary

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Cardiac resynchronization (CRT) therapy is well established for treatment of patients with severe heartfailure, reduced left ventricular (LV) function and ventricular dyssynchrony. Roughly 1/3 of CRT patients do not improve after CRT implant. One possible reason is interruption of biventricular pacing. This might be caused by several conditions, including elevated left ventricular (LV) pacing thresholds or presence of phrenic nerve stimulation (PNS). CRT devices with quadripolar LV leads offer 10 LV pacing vectors to choose from. It's the aim of this prospective observational study to investigate efficacy and reliability of cardiac resynchronization therapy (CRT) with quadripolar left ventricular leads.

Hypothesis: In more than 90% of patients, who received a CRT system with quadripolar LV lead, at least one acceptable LV lead vector is available.

Detailed Description

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Definition of an acceptable lead vector: Any LV pacing vector that complies in both tested body positions (left lateral position and sitting) with both criteria:

1. Phrenic nerve stimulation threshold is at least twice as high as LV pacing threshold
2. LV pacing threshold is less or equals 2.5Volts (V) @0.5 milliseconds (ms)

Conditions

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Heart Failure

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

PROSPECTIVE

Study Groups

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Quadripolar lead

All participants receive a CRT-D system with quadripolar lead

quadripolar LV lead (Quartet)

Intervention Type DEVICE

All participants will receive CRT-D system with a quadripolar lead. This lead offers 10 LV lead vectors to choose from

Interventions

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quadripolar LV lead (Quartet)

All participants will receive CRT-D system with a quadripolar lead. This lead offers 10 LV lead vectors to choose from

Intervention Type DEVICE

Other Intervention Names

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Quartet

Eligibility Criteria

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Inclusion Criteria

* Indication for implantation of a CRT-D
* Age \>= 18 years
* Written informed consent

Exclusion Criteria

* Already implanted LV or coronary sinus lead
* Previous unsuccessful LV lead implant attempt
* Patient is eligible for heart transplantation
* Comorbidities that results in life expectancy of less than 12 months
* Known pregnancy
* Inability to provide written patient informed consent
* Participation to another study with active treatment arm (i.e. randomized studies etc...)
* Patient is not willing or is not able to visit the study center for the study assessments within the first 3 months after implant
* Patient is not able to understand or answer the quality of life questionaire
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Abbott Medical Devices

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Johannes Brachmann, Prof.

Role: PRINCIPAL_INVESTIGATOR

Klinikum Coburg GmbH

Locations

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Klinikum Coburg GmbH

Coburg, , Germany

Site Status

Evangelisches Krankenhaus Kalk

Cologne, , Germany

Site Status

Krankenhaus Mörsenbroich-Rath GmbH

Düsseldorf, , Germany

Site Status

Klinikum Esslingen

Esslingen am Neckar, , Germany

Site Status

Cardioangiologisches Centrum Bethanien

Frankfurt am Main, , Germany

Site Status

Universitätsklinik Freiburg

Freiburg im Breisgau, , Germany

Site Status

Herz- und Gefäßzentrum am Krankenhaus Neu-Bethlehem

Göttingen, , Germany

Site Status

Medizinische Hochschule Hannover

Hanover, , Germany

Site Status

Klinikum der Stadt Ludwigshafen am Rhein gGmbH

Ludwigshafen, , Germany

Site Status

St.-Marien-Hospital GmbH

Lünen, , Germany

Site Status

Klinikum Magdeburg gGmbH

Magdeburg, , Germany

Site Status

Marien-Hospital

Marl, , Germany

Site Status

Klinikum Großhadern der Ludwig-Maximilians-Universität München

München, , Germany

Site Status

Universitätsklinikum Münster

Münster, , Germany

Site Status

Niels-Stensen-Kliniken Marienhospital Osnabrück

Osnabrück, , Germany

Site Status

Klinikum Dorothea Christiane Erxleben GmbH

Quedlinburg, , Germany

Site Status

Countries

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Germany

Other Identifiers

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H56

Identifier Type: -

Identifier Source: org_study_id

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