POsition of Leads in Advanced heaRt Failure: the POLAR Study (POLAR)
POsition of Leads in Advanced heaRt Failure: the POLAR Study - A 6 Month, Observational, Mult-centered, Blinded, Randomized Study to Determine if Lead Positioning in the Lateral Wall of LV in Patients Meeting Criteria for CRT Plays a Role in Determining Myocardial Function and Affect the Severity of Mitral Regurgitation
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Detaillierte Beschreibung
Studientyp
Studientyp
Einschreibung (Voraussichtlich)
Einschreibung
Phase
Phase
- Unzutreffend
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Sergio Thal, M.D.
- Telefonnummer: 4624 520-792-1450
- E-Mail: sergio.thal@va.gov
Studieren Sie die Kontaktsicherung
- Name: Elizabeth Juneman, M.D.
- Telefonnummer: 4624 520-792-1450
- E-Mail: elizabeth.juneman@va.gov
Studienorte
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Arizona
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Tucson, Arizona, Vereinigte Staaten, 85723
- Rekrutierung
- Southern Arizona VA Health Care System
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Kontakt:
- Sergio Thal, M.D.
- Telefonnummer: 4624 520-792-1450
- E-Mail: sergio.thal@va.gov
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Kontakt:
- Elizabeth Juneman, M.D.
- Telefonnummer: 4624 520-792-1450
- E-Mail: elizabeth.juneman@va.gov
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Hauptermittler:
- Sergio Thal, M.D.
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Unterermittler:
- Elizabeth Juneman, M.D.
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Unterermittler:
- Hoang Thai, M.D.
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Kentucky
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Lexington, Kentucky, Vereinigte Staaten, 40502
- Rekrutierung
- Lexington VA Medical Center
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Kontakt:
- Samy Elayi, M.D.
- Telefonnummer: 859-233-4511
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Hauptermittler:
- Samy Elayi, M.D.
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- Subject meets the general indications for an implantable cardioverter defibrillator (ICD) with LV systolic function ≤ 35% as defined by echocardiography.
- Subject has moderate or severe heart failure, defined as NYHA Class III-IV for at least 90 days prior to enrollment.
- Subject has optimal pharmacological heart failure therapy for at least 30 days prior to enrollment.
- Subject has a 12-lead electrocardiogram (ECG) obtained no more than 90 days prior to enrollment documenting a sinus rate > 50 bpm and PR interval < 320 ms measured from any two leads.
- 12 lead ECG with left bundle brunch block morphology and a QRS duration of at least 120 msec.
- Subject has creatinine < 2.5 mg/dL obtained no more than 30 days prior to enrollment.
- Subject has left ventricular ejection fraction < 35% by echocardiogram no more than 1 year prior to enrollment.
- Subject is willing and capable of undergoing a device implant and participating in all testing associated with this clinical investigation.
- Subject has a life expectancy of more than 180 days, per physician discretion.
- Subject is age 18 or above, or of legal age to give informed consent specific to state and national law.
Exclusion Criteria:
- Subject has right bundle branch block morphology on a 12-lead ECG obtained no more than 90 days prior to enrollment.
- Subject had previous cardiac resynchronization therapy, a previous coronary venous lead, or meets the general indications for anti-bradycardia pacing defined as ventricular pacing > 40% by pacemaker interrogation.
- Subject has a neuromuscular, orthopedic, or other non-cardiac condition that prevents normal, unsupported walking.
- Subject has an atrial tachyarrhythmia that is permanent (i.e., does not terminate spontaneously and cannot be terminated with medical intervention) or persistent (i.e., can be terminated with medical intervention, but does not terminate spontaneously) within 30 days prior to enrollment.
- Subject currently requires dialysis.
- Subject has severe chronic obstructive pulmonary disease (COPD), defined as FEV1/FVC < 60%, or as defined by a physician.
- Subject has had a myocardial infarction within 30 days prior to enrollment or coronary artery disease (CAD) in which surgical or percutaneous correction was performed within 30 days prior to enrollment.
- Subject has hypertrophic obstructive cardiomyopathy or infiltrative cardiomyopathy (e.g., amyloidosis, sarcoidosis).
- Subject is on IV inotropic agents.
- Subject has any mitral valve prosthesis, or a mechanical aortic or tricuspid prosthesis
- Subject is enrolled in any concurrent study, without Medtronic written approval, which may confound the results of this study.
- Subject is pregnant or planning to get pregnant.
- Subject requires oxygen for medical reasons other than CHF.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Verdreifachen
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
|---|---|
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Aktiver Komparator: Postero-lateral
Left ventricular lateral wall lead position
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A device implant procedure will be performed under the standard of care technique with the right ventricular lead at the right ventricular apex and the left ventricular lead targeting or postero-lateral area of the LV based on pre-procedure randomization.
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Aktiver Komparator: Antero-lateral
Left ventricular lateral wall lead position
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A device implant procedure will be performed under the standard of care technique with the right ventricular lead at the right ventricular apex and the left ventricular lead targeting or antero-lateral area of the LV based on pre-procedure randomization.
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Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Zeitfenster |
|---|---|
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Change (reduction) in left ventricular end systolic volume (LVESV)
Zeitfenster: 3 and 6 months
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3 and 6 months
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Change in 6 minute walk tests
Zeitfenster: 6 weeks, 3 and 6 months
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6 weeks, 3 and 6 months
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Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Myocardial performance as measured by myocardial performance index (MPI)
Zeitfenster: 6 months
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6 months
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Papillary muscle velocity as determined by tissue doppler
Zeitfenster: 6 months
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6 months
|
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Progression of mitral regurgitation
Zeitfenster: 6 months
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as measured by regurgitant volume, mitral regurgitation fraction and effective regurgitant orifice area
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6 months
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Minnesota living heart failure survey
Zeitfenster: 6 weeks, 3 and 6 months
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6 weeks, 3 and 6 months
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Chronic heart failure hospitalizations
Zeitfenster: Monitored during study participation ~ 6 months
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Monitored during study participation ~ 6 months
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Mitarbeiter und Ermittler
Sponsor
Sponsor
Mitarbeiter
Mitarbeiter
Ermittler
Ermittler
- Hauptermittler: Sergio Thal, M.D., Southern Arizona VA Health Care System
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Studienbeginn
Primärer Abschluss (Voraussichtlich)
Primärer Abschluss
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 (Schätzen)
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
- PIIT1A
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