Adaptive Cardiac Resynchronization Therapy Optimization at Rest and During Exercise (AdOPT CRT)
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Detaillierte Beschreibung
Studientyp
Studientyp
Einschreibung (Tatsächlich)
Einschreibung
Phase
Phase
- Unzutreffend
Kontakte und Standorte
Studienorte
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Genk, Belgien
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Leuven, Belgien
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Ludenscheid, Deutschland
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Arhus, Dänemark
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Nijmegen, Niederlande
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Oslo, Norwegen
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Linz, Österreich
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- Subject is age 18 or greater
- Subject is willing to sign and date the study Informed Consent form
- Subject has been implanted with a clinically indicated CRT-D device (Medtronic Vision 3D or Protecta models) for at least 1 month but less than 7 months from the date of study enrollment
Exclusion Criteria:
- Subject has a history of persistent or permanent AF for which pharmacological therapy and/or cardioversion have been unsuccessful or have not been attempted.
- Subject has atrial or ventricular tachyarrhythmias or frequent atrial or ventricular ectopy at the time of enrollment.
- Subject's resting heart rate at the time of enrollment exceeds 90 bpm.
- Subject had CRT system implanted for more than 7 months from the date of the study enrollment
- Subject has complete AV block.
- Subject had previous mechanical valve surgeries.
- Subject has congenital heart disease.
- Subject has contraindication for an exercise test.
- Subject is unable to perform a sub-maximal exercise test.
- It is not possible to acquire technically acceptable echocardiographic images.
- Subject has medical conditions that would limit study participation.
- Subject is pregnant (all women of child-bearing potential must undergo a pregnancy test within seven days prior to the study visit).
- Subject is enrolled in the Adaptive CRT study
- Subject is enrolled in concurrent studies which could confound the results of this study.
- Subject meets exclusion criteria required by local law
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: N / A
- Interventionsmodell: Einzelgruppenzuweisung
- Maskierung: Keine (Offenes Etikett)
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
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Experimental: CRT pacing at rest and during exercise
Rest and sub-maximal exercise
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CRT pacing with aCRT settings and BiV pacing with nominal programming at rest and during submaximal exercise
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Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Stroke Volume at Rest
Zeitfenster: Test day visit (within 14 days of enrollment)
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Difference in stroke volume (SV) between BiV pacing with aCRT settings and BiV pacing with nominal settings at rest.
Biventricular pacing is a type of pacing that paces both the right and left ventricles of the heart.
Stroke volume is the volume of blood pumped from a ventricle in one heart beat.
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Test day visit (within 14 days of enrollment)
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Stroke Volume During Atrial Pacing.
Zeitfenster: Test day visit (within 14 days of enrollment)
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Difference in SV between BiV pacing with aCRT settings and BiV pacing with nominal settings during atrial pacing.
Atrial pacing occurs at 20 beats-per-minute (bpm) above the subject's resting heart rate.
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Test day visit (within 14 days of enrollment)
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Stroke Volume During Sub-maximal Exercise.
Zeitfenster: Test day visit (within 14 days of enrollment)
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Difference in SV between BiV pacing with aCRT settings and BiV pacing with nominal settings during sub-maximal exercise.
Sub-maximal exercise is exercise performed at a level below maximum effort.
The subject will perform sub-maximal exercise to achieve target heart rate close to 75% of the age-predicted maximal heart rate.
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Test day visit (within 14 days of enrollment)
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Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Cardiac Function With aCRT Settings at Rest
Zeitfenster: Test day visit (within 14 days of enrollment)
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Difference in blood pressure (BP)-derived and echocardiogram (echo)-derived parameters of cardiac function between BiV pacing with aCRT settings and BiV pacing with nominal settings at rest.
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Test day visit (within 14 days of enrollment)
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Cardiac Function With Nominal Settings at Rest.
Zeitfenster: Test day visit (within 14 days of enrollment)
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Difference in BP-derived and echo-derived parameters of cardiac function between BiV pacing with nominal settings and intrinsic conduction at rest.
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Test day visit (within 14 days of enrollment)
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Cardiac Function With aCRT Settings During Sub-maximal Exercise.
Zeitfenster: Test day visit (within 14 days of enrollment)
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Difference in BP-derived and echocardiogram (echo)-derived parameters of cardiac function between BiV pacing with aCRT settings and BiV pacing with nominal settings during sub-maximal exercise.
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Test day visit (within 14 days of enrollment)
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Cardiac Function With Nominal Settings During Sub-maximal Exercise.
Zeitfenster: Test day visit (within 14 days of enrollment)
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Difference in BP-derived and echo-derived parameters of cardiac function between BiV pacing with nominal settings and intrinsic conduction during sub-maximal exercise.
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Test day visit (within 14 days of enrollment)
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Electrical Conduction at Rest.
Zeitfenster: Test day visit (within 14 days of enrollment)
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Electrical conduction will be evaluated at rest by measuring the subject's intrinsic atrio-ventricular (AV) interval.
The AV interval is the amount time between the start of atrial contraction and the start of ventricular contraction.
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Test day visit (within 14 days of enrollment)
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Electrical Conduction During Sub-maximal Exercise.
Zeitfenster: Time Frame: Test day visit (within 14 days of enrollment)
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Electrical conduction will be evaluated during sub-maximal exercise by measuring the subject's intrinsic AV interval.
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Time Frame: Test day visit (within 14 days of enrollment)
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Mitarbeiter und Ermittler
Sponsor
Sponsor
Ermittler
Ermittler
- Studienstuhl: AdOPT CRT/aCRT Study Team, Medtronic
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Tatsächlich)
Primärer Abschluss
Studienabschluss (Tatsächlich)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- AdOPT CRT Sub Study
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