Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

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

9. januar 2018 opdateret af: 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.

Studieoversigt

Status

Ukendt

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

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.

Undersøgelsestype

Observationel

Tilmelding (Forventet)

100

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

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

Beskrivelse

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.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
Mitral Valve Surgery
Patients undergoing ACC/AHA guideline directed mitral valve surgery for mitral insufficiency.
ACC/AHA guideline directed mitral valve repair or replacement

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Operative and peri-operative outcomes according to the mitral regurgitation severity quantified by MRI.
Tidsramme: 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

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Quality of life
Tidsramme: 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
Tidsramme: 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.
Tidsramme: 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.
Tidsramme: 4 months
Correlation of pre-surgical regurgitant volume as quantified by MRI with post-surgical change in LV EDV.
4 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. januar 2017

Primær færdiggørelse (Forventet)

1. december 2020

Studieafslutning (Forventet)

1. december 2020

Datoer for studieregistrering

Først indsendt

16. december 2016

Først indsendt, der opfyldte QC-kriterier

4. januar 2017

Først opslået (Skøn)

6. januar 2017

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

11. januar 2018

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

9. januar 2018

Sidst verificeret

1. januar 2018

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 967510-2

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Mitralventilinsufficiens

Kliniske forsøg med Mitral valve surgery

Søg i lignende forsøg