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
Panoramica dello studio
Stato
Stato
Condizioni
Condizioni
Intervento / Trattamento
Intervento / Trattamento
Descrizione dettagliata
Tipo di studio
Tipo di studio
Iscrizione (Anticipato)
Iscrizione
Fase
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
Contatto studio
- Nome: Sergio Thal, M.D.
- Numero di telefono: 4624 520-792-1450
- Email: sergio.thal@va.gov
Backup dei contatti dello studio
- Nome: Elizabeth Juneman, M.D.
- Numero di telefono: 4624 520-792-1450
- Email: elizabeth.juneman@va.gov
Luoghi di studio
-
-
Arizona
-
Tucson, Arizona, Stati Uniti, 85723
- Reclutamento
- Southern Arizona VA Health Care System
-
Contatto:
- Sergio Thal, M.D.
- Numero di telefono: 4624 520-792-1450
- Email: sergio.thal@va.gov
-
Contatto:
- Elizabeth Juneman, M.D.
- Numero di telefono: 4624 520-792-1450
- Email: elizabeth.juneman@va.gov
-
Investigatore principale:
- Sergio Thal, M.D.
-
Sub-investigatore:
- Elizabeth Juneman, M.D.
-
Sub-investigatore:
- Hoang Thai, M.D.
-
-
Kentucky
-
Lexington, Kentucky, Stati Uniti, 40502
- Reclutamento
- Lexington VA Medical Center
-
Contatto:
- Samy Elayi, M.D.
- Numero di telefono: 859-233-4511
-
Investigatore principale:
- Samy Elayi, M.D.
-
-
Criteri di partecipazione
Criteri di ammissibilità
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
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.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Triplicare
Numero di armi
Armi e interventi
Gruppo di partecipanti / ArmGruppo di partecipanti / Arm |
Intervento / TrattamentoIntervento / Trattamento |
|---|---|
|
Comparatore attivo: Postero-lateral
Left ventricular lateral wall lead position
|
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.
|
|
Comparatore attivo: Antero-lateral
Left ventricular lateral wall lead position
|
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.
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misure di risultato primarie
Misura del risultato |
Lasso di tempo |
|---|---|
|
Change (reduction) in left ventricular end systolic volume (LVESV)
Lasso di tempo: 3 and 6 months
|
3 and 6 months
|
|
Change in 6 minute walk tests
Lasso di tempo: 6 weeks, 3 and 6 months
|
6 weeks, 3 and 6 months
|
Misure di risultato secondarie
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Myocardial performance as measured by myocardial performance index (MPI)
Lasso di tempo: 6 months
|
6 months
|
|
|
Papillary muscle velocity as determined by tissue doppler
Lasso di tempo: 6 months
|
6 months
|
|
|
Progression of mitral regurgitation
Lasso di tempo: 6 months
|
as measured by regurgitant volume, mitral regurgitation fraction and effective regurgitant orifice area
|
6 months
|
|
Minnesota living heart failure survey
Lasso di tempo: 6 weeks, 3 and 6 months
|
6 weeks, 3 and 6 months
|
|
|
Chronic heart failure hospitalizations
Lasso di tempo: Monitored during study participation ~ 6 months
|
Monitored during study participation ~ 6 months
|
Collaboratori e investigatori
Sponsor
Sponsor
Collaboratori
Collaboratori
Investigatori
Investigatori
- Investigatore principale: Sergio Thal, M.D., Southern Arizona VA Health Care System
Studiare le date dei record
Studia le date principali
Inizio studio
Inizio studio
Completamento primario (Anticipato)
Completamento primario
Date di iscrizione allo studio
Primo inviato
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Primo Inserito
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento pubblicato
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
Altri numeri di identificazione dello studio
- PIIT1A
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .