ClinicalTrials.gg
CompletedNCT01217528DECREASEUpdated Feb 4, 2019

Reduction of Inappropriate Implantable Cardioverter Defibrillator (ICD) Therapies in Primary Prevention Patients

An interventional study of device settings for group A and Device settings for group B in Cardiac Death, sponsored by Abbott Medical Devices. Completed at 34 sites in Germany. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-02-04.

Sponsored by Abbott Medical Devices (part of Abbott) · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
543
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to determine efficacy of a dedicated programming concept for avoidance of inappropriate implantable cardioverter defibrillator (ICD) therapies in patient with primary prevention ICD indication.

Read the detailed description

Inappropriate ICD therapies still remains a major issue with respect to patient's quality of life and proarrhythmic risk.

It's the aim of this study to determine efficacy of a dedicated programming concept for avoidance of inappropriate ICD therapy in patients who received the ICD for primary prevention of sudden cardiac death.

02

Conditions studied

  • Cardiac Death

Keywords

  • ICD
  • CRTD
  • Sudden cardiac death
  • Device settings
  • Patients who received ICD/CRTD for primary prevention of sudden cardiac death
03

In context

Death

583 studies on the registry are indexed under Death; 109 are open to participants now.

This study's enrollment of 543 is above the median of 131 across 267 interventional studies indexed under Death.

Browse Death studies →

Lead sponsor

Abbott Medical Devices is the lead sponsor of 539 studies on the registry; 33 are open to participants now.

Of its 53 completed or terminated interventional studies of FDA-regulated products, 44 (83%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Approved indication for new ICD implantation for primary prevention of sudden cardiac death
  • Age >=18 Years
  • Written informed consent

Exclusion criteria

Exclusion Criteria:

  • ICD indication for secondary prevention reasons
  • ICD indication for "electrical" disorders (i.e. long/short QT syndrome, Brugada syndrome etc...)
  • ICD change or upgrade
  • Pregnancy
  • Nonage
  • Patient is already participating to another study with active therapy arm
  • Patient will most likely not be able to participate to the routine follow ups in the study center.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
543 participants (actual)

Study arms

  • Active comparator
    Group A

    Group A: * VT zone: 350ms * VF zone: 280ms

    Device: device settings for group A

  • Experimental
    Group B

    Group B: * VT zone: 320ms * VF zone: 250ms

    Device: Device settings for group B

Interventions

  • Devicedevice settings for group A

    VT zone: 350ms VF zone: 280ms

    Also known as: Control group

  • DeviceDevice settings for group B

    VT zone: 320ms VF zone: 250ms

    Also known as: Treatment group

06

What researchers measure

Primary outcomes

  1. Primary Endpoint

    Event free survival of: 1. inappropriate ICD therapies (only stored tachycardias with proper stored EGM documentation are taken into account) AND 2. spontaneous, documented, sustained (\>30s) ventricular tachycardia, that was not treated by the ICD

    Time frame: 12 months

Secondary outcomes

  1. Amount of patients with appropriate / inappropriate ICD therapies

    Time frame: 12 months

  2. Prevalence of slow VT (<=187bpm) in patients with indication for primary prevention of SCD

    Time frame: 12 months

  3. Number and cycle lengths of supraventricular / ventricular tachys

    Time frame: 12 months

  4. Time to first appropriate / inappropriate ICD therapy

    Time frame: 12 months

  5. Sensitivity for diagnosis of sustained VT

    Time frame: 12 months

  6. Specificity for SVT diagnosis

    Time frame: 12 months

  7. Quality of Life (MLHF Questionaire)

    Time frame: 12 months

  8. Overall mortality

    Time frame: 12 months

  9. Cardiac mortality

    Time frame: 12 months

  10. Frequency and efficacy of ATP prior to / before capacitor charging in VF zone

    Time frame: 12 months

  11. Amount of patients with appropriate / inappropriate shocks or ATP

    Time frame: 12 months

07

Study locations

34 sites
  • Medizinische Einrichtungen der RWTH Aachen
    Aachen, 52074, Germany
  • Klinikum Altenburger Land GmbH
    Altenburg, 04600, Germany
  • Städtisches Krankenhaus St. Barbara Attendorn GmbH
    Attendorn, 57439, Germany
  • Medizinische Einrichtungen der Rheinischen Friedrich-Wilhelm-Universität
    Bonn, 53127, Germany
  • Klinikum Coburg
    Coburg, 96450, Germany
  • Evangelisches Krankenhaus Kalk
    Cologne, 51103, Germany
  • Klinik Fränkische Schweiz
    Ebermannstadt, 91320, Germany
  • Kreiskrankenhaus Ebersberg
    Ebersberg, 85560, Germany
  • Kardiologische Gem.-Praxis Dres. med. Bischoff / Lang
    Erfurt, 99084, Germany
  • Klinikum Esslingen
    Esslingen am Neckar, 73730, Germany
  • Universitätsklinik Freiburg
    Freiburg im Breisgau, 79106, Germany
  • Krankenhaus Waltershausen-Friedrichroda
    Friedrichroda, 99894, Germany
  • Universitätsklinikum Gießen und Marburg GmbH - Standort Gießen
    Giessen, 35392, Germany
  • Asklepios Klinik St. Georg
    Hamburg, 20099, Germany
  • Universitäres Herzzentrum Hamburg
    Hamburg, 20246, Germany
  • Oberhavel Kliniken GmbH Klinik Hennigsdorf
    Henningsdorf, 16761, Germany
  • Universitätsklinikum Schleswig-Holstein Campus Kiel
    Kiel, 24105, Germany
  • Frankenwaldklinik Kronach GmbH
    Kronach, 96317, Germany
  • Klinikum der Stadt Ludwigshafen am Rhein gGmbH
    Ludwigshafen, 67063, Germany
  • St.-Marien-Hospital GmbH
    Lünen, 44534, Germany
  • Klinikum Memmingen
    Memmingen, 87700, Germany
  • Klinikum Großhadern der Ludwig-Maximilians-Universität München
    München, 81377, Germany
  • Herzkatheter / Praxisklinik Dres. med. Mühling / Prof. Dr. Silber
    München, 81379, Germany
  • Universitätsklinikum Münster
    Münster, 48149, Germany
  • Praxis Dres. med. Haggenmiller / Jeserich
    Nuremberg, 90402, Germany
  • Klinikum Nürnberg
    Nuremberg, 90471, Germany
  • Kreiskrankenhaus des Bördekreises Krankenhaus 4
    Oschersleben, 39387, Germany
  • Niels-Stensen-Kliniken Marienhospital Osnabrück
    Osnabrück, 49074, Germany
  • Klinikum Pirna GmbH Klinik für Innere Medizin II
    Pirna, 01796, Germany
  • Klinikum Dorothea Christiane Erxleben GmbH
    Quedlinburg, 06484, Germany
  • Wilhelm-Augusta Krankenhaus des Deutschen Roten Kreuzes
    Ratzeburg, 23909, Germany
  • Universität Rostock
    Rostock, 18057, Germany
  • Katharinen-Hospital gGmbH
    Unna, 59423, Germany
  • Helios Klinikum Wuppertal
    Wuppertal, 42117, Germany
08

References and documents

Publications

  • Schwab JO, Bonnemeier H, Kleemann T, Brachmann J, Fischer S, Birkenhauer F, Eberhardt F. Reduction of inappropriate ICD therapies in patients with primary prevention of sudden cardiac death: DECREASE study. Clin Res Cardiol. 2015 Dec;104(12):1021-32. doi: 10.1007/s00392-015-0870-z. Epub 2015 May 23. PubMed 26002818 ↗
09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Aug 2009, a primary completion of Sep 2012 and a completion of Jan 2013. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 10, 2010
First posted
Oct 8, 2010
Start
Aug 2009
Primary completionActual
Sep 2012
CompletionActual
Jan 2013
Last update
Feb 4, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 4, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01217528
Responsible party
Sponsor
First posted
Oct 8, 2010
Start date
Aug 2009
Primary completion
Sep 2012
Completion
Jan 2013
Last update
Feb 4, 2019

Study contacts

Jörg O Schwab, Prof. Dr. med.
principal investigator · Medizinische Einrichtungen der Rheinischen Friedrich-Wilhelm-Universität Bonn

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Feb 2019. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion