Tato stránka byla automaticky přeložena a přesnost překladu není zaručena. Podívejte se prosím na anglická verze pro zdrojový text.

MRI as a Predictor of Outcomes in Patients Undergoing Mitral Valve Surgery (MRI-MVS)

9. ledna 2018 aktualizováno: Atlantic Health System

Prospective Evaluation of MRI as a Predictor of Outcomes in Patients Undergoing Mitral Valve Surgery: MRI-MVS Study

Based on the ACC/AHA guidelines for the management of mitral valve disease, quantifying the severity of mitral regurgitation is central to determining which patients are appropriate for correction of their mitral valve by surgery. Specifically, once the diagnosis of severe MR is made, patients are considered appropriate for mitral valve surgery in almost all clinical circumstances. However, there is a significant mortality and morbidity associated with mitral valve surgery The most common diagnostic tool to assess the severity of MR is echocardiography. Several studies have shown that echocardiography parameters used to quantify and qualify MR have high inter-observer and intra-observer variability, calling the accuracy of these parameters into question. Furthermore, studies have shown that there is a significant degree of discordance between echocardiography and MRI when assessing MR, particularly among patients referred for mitral valve surgery. In a recent study, quantification of mitral regurgitant volume MRI was found to be more accurate than echocardiography in patients who underwent mitral valve surgery. All 38 patients who underwent mitral valve surgery in this study were deemed appropriate according the ACC/AHA guidelines based on echocardiographic findings. However, more than 2/3rds of patients who underwent mitral valve surgery in this study did not have severe MR by MRI. Thus, we propose this prospective multicenter trial to assess: 1) the severity of MR by MRI in patients undergoing mitral valve surgery. 2) the impact of mitral valve surgery on quality of life and healthcare costs in the context of MR severity by MRI, 3) assess patient outcomes post surgery in the context of MR severity by MRI and 4) the likelihood of valve replacement vs. repair according to MR severity by MRI.

Přehled studie

Postavení

Neznámý

Podmínky

Intervence / Léčba

Detailní popis

Mitral regurgitation is a common disease which can lead to heart failure and death if left untreated. The only known therapy for mitral regurgitation is correction of the mitral valve, most commonly performed by surgical repair or replacement. According the STS database, there were 15,748 lone mitral valve surgeries in 2014. The number of mitral valve surgeries has been increasing with a 23% increase between the years 2010 and 2014. Based on the ACC/AHA guidelines for the management of mitral valve disease, quantifying the severity of mitral regurgitation is central to determining which patients are appropriate for correction of their mitral valve by surgery. Specifically, once the diagnosis of severe MR is made, patients are considered appropriate for mitral valve surgery in almost all clinical circumstances. However, there is a significant mortality and morbidity associated with mitral valve surgery. In the STS database, 30 day mortality was ~2% for repair and ~5% for replacement. This data does not take into account long-term mortality and morbidity from re-operation and life-long anti-coagulation as well as changes in quality of life.

The most common diagnostic tool to assess the severity of MR is echocardiography. Several studies have shown that echocardiography parameters used to quantify and qualify MR have high inter-observer and intra-observer variability, calling the accuracy of these parameters into question. Furthermore, studies have shown that there is a significant degree of discordance between echocardiography and MRI when assessing MR, particularly among patients referred for mitral valve surgery. In a recent study, quantification of mitral regurgitant volume MRI was found to be more accurate than echocardiography in patients who underwent mitral valve surgery. All 38 patients who underwent mitral valve surgery in this study were deemed appropriate according the ACC/AHA guidelines based on echocardiographic findings. However, more than 2/3rds of patients who underwent mitral valve surgery in this study did not have severe MR by MRI. Thus, we propose this prospective multicenter trial to assess: 1) the severity of MR by MRI in patients undergoing mitral valve surgery. 2) the impact of mitral valve surgery on quality of life and healthcare costs in the context of MR severity by MRI, 3) assess patient outcomes post surgery in the context of MR severity by MRI and 4) the likelihood of valve replacement vs. repair according to MR severity by MRI.

Typ studie

Pozorovací

Zápis (Očekávaný)

100

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní kontakt

Studijní záloha kontaktů

Studijní místa

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

18 let a starší (Dospělý, Starší dospělý)

Přijímá zdravé dobrovolníky

Ne

Pohlaví způsobilá ke studiu

Všechno

Metoda odběru vzorků

Vzorek nepravděpodobnosti

Studijní populace

Subjects who are scheduled to undergo ACC/AHA guideline directed mitral valve surgery for mitral regurgitation.

Popis

Inclusion Criteria:

  • Age 18 years and older.
  • Able to give informed consent.
  • Undergoing lone mitral valve surgery for chronic primary mitral regurgitation within 30 days.
  • Indication for mitral valve surgery is a class I or IIa according to the 2014 ACC/AHA guidelines for the management of valvular heart disease.

Exclusion Criteria:

  • Secondary mitral regurgitation.
  • Have a device which is not compatible with MRI
  • Claustrophobia preventing MRI.
  • Concomitant CABG, other valve surgery, or other cardiac surgery.
  • Atrial fibrillation or other substantial arrhythmia that would substantially degrade MRI image acquisition.

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

Kohorty a intervence

Skupina / kohorta
Intervence / Léčba
Mitral Valve Surgery
Patients undergoing ACC/AHA guideline directed mitral valve surgery for mitral insufficiency.
ACC/AHA guideline directed mitral valve repair or replacement

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Operative and peri-operative outcomes according to the mitral regurgitation severity quantified by MRI.
Časové okno: 2 years
Operative and peri-operative outcomes (mortality, morbidity, hospitalizations, reoperation, bleeding, and CVA) in the context of mitral regurgitation severity quantified by MRI.
2 years

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Quality of life
Časové okno: 2 years
Operative and peri-operative outcomes (mortality, morbidity, hospitalizations, reoperation, bleeding, and CVA) in the context of mitral regurgitation severity quantified by MRI.
2 years
Repair vs Replacement
Časové okno: 4 months
Assess if the likelihood of mitral valve repair vs. replacement is associated with mitral regurgitant severity as quantified by MRI.
4 months
Severity of mitral regurgitation as quantified MRI in subjects who are undergoing guideline directed mitral valve surgery.
Časové okno: 0 days
Cross sectional data regarding severity of mitral regurgitation as quantified MRI in subjects who are undergoing guideline directed mitral valve surgery
0 days
Correlation of pre-surgical regurgitant volume as quantified by MRI with post-surgical change in LV EDV.
Časové okno: 4 months
Correlation of pre-surgical regurgitant volume as quantified by MRI with post-surgical change in LV EDV.
4 months

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia

1. ledna 2017

Primární dokončení (Očekávaný)

1. prosince 2020

Dokončení studie (Očekávaný)

1. prosince 2020

Termíny zápisu do studia

První předloženo

16. prosince 2016

První předloženo, které splnilo kritéria kontroly kvality

4. ledna 2017

První zveřejněno (Odhad)

6. ledna 2017

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

11. ledna 2018

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

9. ledna 2018

Naposledy ověřeno

1. ledna 2018

Více informací

Termíny související s touto studií

Další identifikační čísla studie

  • 967510-2

Plán pro data jednotlivých účastníků (IPD)

Plánujete sdílet data jednotlivých účastníků (IPD)?

NE

Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .

Klinické studie na Insuficience mitrální chlopně

Klinické studie na Mitral valve surgery

Prohledejte podobné pokusy