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Ventricular Pace Suppression Versus Intrinsic Rhythm Support Study (VIPERS)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01528657
Recruitment Status : Completed
First Posted : February 8, 2012
Last Update Posted : October 22, 2015
Information provided by (Responsible Party):
Biotronik SE & Co. KG

Brief Summary:
The objective of this study is to intra-individually compare the performances of two pacemaker algorithms designed to reduce unnecessary right ventricular pacing: Intrinsic Rhythm Support Plus (IRSplus) and Ventricular Pace Suppression (VpS). The study will compare ventricular pacing percentage, long-term atrio-ventricular conduction time, occurrences of atrial tachyarrhythmic events and atrial fibrillation burden percentage in patients implanted with a pacemaker for Sick Sinus Syndrome.

Condition or disease Intervention/treatment Phase
Sick Sinus Syndrome Other: Ventricular Pace Suppression (Vps) Other: Intrinsic rhythm support (IRSplus) Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 230 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Study Start Date : December 2011
Actual Primary Completion Date : August 2015
Actual Study Completion Date : August 2015

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: Ventricular Pace Suppression (VpS)
The function Ventricular Pace Suppression (VpS) is activated
Other: Ventricular Pace Suppression (Vps)
Unnecessary ventricular pacing is avoided by promoting intrinsic conduction. In case of intrinsic conduction, the device switches from a DDD mode to an ADI mode.

Experimental: Intrinsic Rhythm Support (IRSplus)
The function Intrinsic Rhythm Support (IRSplus) is activated
Other: Intrinsic rhythm support (IRSplus)
All parameters of the AV hysteresis functions are set in a way to maintain spontaneous AV conduction of the patient's heart as long as possible.

Primary Outcome Measures :
  1. Ventricular pacing percentage [ Time Frame: 6 months ]

Secondary Outcome Measures :
  1. Long-term atrio-ventricular conduction delay [ Time Frame: 6 Months ]
  2. Occurrence of atrial tachycardia or atrial fibrillation events [ Time Frame: 6 Months ]
  3. Burden of atrial fibrillation [ Time Frame: 6 Months ]

Information from the National Library of Medicine

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

Inclusion Criteria:

  • Patients over 18 years of age;
  • Patient has proven informed consent;
  • Subject with indication of dual chamber pacemaker due to Sinus Node Dysfunction;
  • Subjects with a dual chamber pacemaker already implanted within six months from enrollment, provided that ventricular pacing percentage ≤ 40% and with the right ventricular lead in the apical position;
  • Stable medical situation;
  • Stable geographical situation;

Exclusion Criteria:

  • Permanent or paroxysmal AV block ≥ II;
  • Permanent Atrial fibrillation/Atrial flutter;
  • Device Replacement;
  • Patient with a poor echocardiographic window;
  • Patient already implanted with the right ventricular lead not in the apical position;
  • Subjects with a dual chamber pacemaker, implanted later than six months;
  • Subjects with a dual chamber pacemaker with ventricular pacing percentage ≥ 40%;
  • Contraindication for DDD(R)-ADI(R) or DDD(R) pacing modes;
  • VpS or IRSplus algorithm contraindications;
  • Age < 18 years;
  • Life expectancy < 12 months;
  • Cardiac surgery planned within the FU period;
  • Participation to another clinical investigation;

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01528657

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Ospedale Bolognini
Seriate, Bergamo, Italy
P.O. F. Ferrari
Casarano, Lecce, Italy
A.O. Destra Secchia
Pieve di Coriano, Mantova, Italy
Ospedale San Leonardo
Castellammare, Napoli, Italy
Ospedale SS. Trinità
Borgomanero, Novara, Italy
Ospedale SS. Cosma e Damiano
Pescia, Pistoia, Italy
Ospedale Santa Croce
Moncalieri, Torino, Italy
Ospedale S.Antonio Abate
Gallarate, Varese, Italy
Ospedale Dell'Angelo
Mestre, Venezia, Italy
A.O.U. Ospedali Riuniti di Ancona
Ancona, Italy
Ospedale Degli Infermi
Biella, Italy
A.O.U. Policlinico-Vittorio Emanuele
Catania, Italy
Ospedale S. Giuseppe
Empoli, Italy
Osp. Civile F. Veneziale
Isernia, Italy
P.O. Vito Fazzi
Lecce, Italy
A.O.R.N. dei Colli - PO "V. Monaldi"
Napoli, Italy
A.O. Santa Maria Degli Angeli
Pordenone, Italy
A.O. San Carlo
Potenza, Italy
Ospedale Degli Infermi
Rimini, Italy
Ospedale SS. Giovanni e Paolo
Venezia, Italy
Sponsors and Collaborators
Biotronik SE & Co. KG
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Principal Investigator: Alessandro Capucci A.O.U. Ospedali Riuniti, Ancona
Principal Investigator: Valeria Calvi A.O.U. Policlinico-Vittorio Emanuele, Catania
Principal Investigator: Marco Brieda A.O. Santa Maria degli Angeli, Pordenone
Principal Investigator: Ennio Pisanò P.O. Vito Fazzi, Lecce
Principal Investigator: Vittorio Giudici Ospedale Bolognini, Seriate


Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Biotronik SE & Co. KG Identifier: NCT01528657     History of Changes
Other Study ID Numbers: BA098
First Posted: February 8, 2012    Key Record Dates
Last Update Posted: October 22, 2015
Last Verified: October 2015
Keywords provided by Biotronik SE & Co. KG:
Sick Sinus Syndrome
Ventricular pacing
Minimal ventricular pacing
Ventricular pacing suppression
Intrinsic rhythm support
Long term AV
Additional relevant MeSH terms:
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Sick Sinus Syndrome
Pathologic Processes
Arrhythmia, Sinus
Arrhythmias, Cardiac
Heart Diseases
Cardiovascular Diseases
Heart Block
Cardiac Conduction System Disease