- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT03332745
Mechanism of Decompensation Evaluation - Aortic Stenosis (MODE-AS)
Mechanism of Left Ventricular Decompensation Evaluation - Aortic Stenosis
Aortic stenosis is the most common heart valve disease requiring intervention in high income countries. It is characterised by progressive valvular thickening, and restriction as well is hypertrophy and fibrosis of the left ventricle in response to pressure overload. The pathological processes in the left ventricle that ultimately result in heart failure and death are incompletely understood. Further elucidation of these processes and how they correlate with novel blood biomarkers may help us design new treatments and optimise the timing of surgical intervention.
In brief, recruited patients with severe aortic stenosis and scheduled to undergo valve replacement surgery will be invited for some simple tests (blood sampling, ECG, echocardiogram). A septal myocardial biopsy will be taken at the time of surgery and the disease valve retained. These will be examined histologically and pathological changes compared with results obtained from ECG, echocardiogram and blood tests.
Studieoversigt
Status
Undersøgelsestype
Tilmelding (Forventet)
Kontakter og lokationer
Studiekontakt
- Navn: Russell J Everett, MBBS
- Telefonnummer: 01312426361
- E-mail: russell.everett@ed.ac.uk
Studiesteder
-
-
Midlothian
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Edinburgh, Midlothian, Det Forenede Kongerige, EH164SB
- Rekruttering
- University of Edinburgh / NHS Lothian
-
Kontakt:
- Russell J Everett, MBBS
- Telefonnummer: 01312426361
- E-mail: russell.everett@ed.ac.uk
-
-
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
- Inclusion Criteria (aortic stenosis group):
- Age over 18
- Severe aortic stenosis with planned aortic valve replacement
Inclusion Criteria (control group):
- Age over 18
- Planned non-aortic valve cardiac or elective ascending aorta surgery
Exclusion Criteria (aortic stenosis group):
- Coexistent severe aortic or mitral regurgitation
- Coexistent mitral stenosis greater than mild in severity
- Acute valvular heart disease (e.g. acute mitral regurgitation or endocarditis)
- Acute pulmonary oedema or cardiogenic shock
- Coexistent hypertrophic cardiomyopathy
- Unable to give informed consent
Exclusion Criteria (control group):
- Significant aortic valve disease (mild aortic stenosis / regurgitation or greater)
- Acute valvular heart disease (e.g. acute mitral regurgitation or endocarditis)
- Acute pulmonary oedema or cardiogenic shock
- Coexistent hypertrophic cardiomyopathy
- Unable to give informed consent
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
---|
Severe aortic stenosis
Patients with severe aortic stenosis who are scheduled to undergo aortic valve replacement surgery
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Control group
Patients scheduled to undergo non-aortic valve cardiac or elective ascending aortic surgery
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
---|---|---|
Correlation of blood biomarkers with pathological changes on myocardial biopsy
Tidsramme: Biomarkers collected within 1 month prior to date of surgery (and myocardial biopsy)
|
Correlation between biomarkers (e.g.
high sensitivity troponin I, BNP) with levels of myocardial fibrosis (collagen volume fraction as measured by picrosirius red staining)
|
Biomarkers collected within 1 month prior to date of surgery (and myocardial biopsy)
|
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
---|---|---|
Correlation of echocardiographic and ECG measures with pathological changes on myocardial biopsy
Tidsramme: Biomarkers collected within 1 month prior to date of surgery (and myocardial biopsy)
|
Correlation between imaging measures (e.g.
LV diastolic function, longitudinal systolic function, ECG LVH criteria, ECG strain pattern) with levels of myocardial fibrosis (collagen volume fraction as measured by picrosirius red staining)
|
Biomarkers collected within 1 month prior to date of surgery (and myocardial biopsy)
|
Samarbejdspartnere og efterforskere
Sponsor
Efterforskere
- Ledende efterforsker: Russell J Everett, MBBS, University of Edinburgh
Datoer for undersøgelser
Studer store datoer
Studiestart (Forventet)
Primær færdiggørelse (Forventet)
Studieafslutning (Forventet)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- E161633
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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