Anatomic Stenosis Severity as a Prognostic Marker in Patients With Low-Flow Low-Gradient Aortic Stenosis Undergoing TAVI (ATLAS TAVI)
2. juni 2021 oppdatert av: Universitätsklinikum Hamburg-Eppendorf
AnaTomic Stenosis Severity Derived From Computed Tomography as a Prognostic Marker in Patients With Low-flow Low-gradient Aortic Stenosis Undergoing Transcatheter Aortic Valve Implantation
The ATLAS TAVI Registry is a retrospective, investigator-initiated, multicenter registry including patients, who underwent Transcatheter Aortic Valve Implantation (TAVI) for classical or paradoxical low-flow, low-gradient aortic stenosis (LFLG AS) with available non-contrast MSCT data on aortic valve calcification (AVC).
The main objective of this study is the assessment of outcome after TAVI according to AVC density severity in patients with LFLG AS.
Studieoversikt
Status
Rekruttering
Detaljert beskrivelse
Aortic valve calcification (AVC) as assessed by MSCT is highly correlated with aortic stenosis (AS) severity and, thus, has become an important tool for diagnosing severe AS, especially in patients with low-flow low-gradient aortic stenosis (LFLG AS). Moreover, in medically treated AS patients AVC is directly associated with poor prognosis. In contrast, the prognostic benefit of eliminating AS by Transcatheter Aortic Valve Implantation (TAVI) in patients with LFLG AS seems to be larger in patients with high AVC density (AVCd) compared to those with low AVCd, at least in "classical" (low EF) LFLG AS. Hence, we hypothesize that AVCd might be a valuable marker for treatment response among TAVI patients with LFLG AS, who are known to suffer from poor outcome even after elimination of AS.
The multicentric ATLAS TAVI Registry of LFLG AS patients, who underwent TAVI, assesses the impact of AVCd on outcome in these patients.
Studietype
Observasjonsmessig
Registrering (Forventet)
1500
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiekontakt
- Navn: Niklas Schofer, MD
- Telefonnummer: +49-40-7410-0
- E-post: n.schofer@uke.de
Studiesteder
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Montréal, Canada
- Rekruttering
- Montreal Heart Institute
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Ta kontakt med:
- Walid Ben Ali, MD
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Québec, Canada
- Rekruttering
- Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval
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Ta kontakt med:
- Marie-Annick Clavel, PhD
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Odense, Danmark
- Rekruttering
- Odense University Hospital
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Ta kontakt med:
- Jordi Dahl, MD
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Lille, Frankrike
- Rekruttering
- CHU de Lille
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Ta kontakt med:
- Augustin Coisne, MD
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Paris, Frankrike
- Rekruttering
- Hôpital Bichat - Claude-Bernard
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Ta kontakt med:
- Marina Urena Alcazar, MD
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Petah Tikva, Israel
- Rekruttering
- Rabin Medical Center
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Ta kontakt med:
- Uri Landes, MD
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Rotterdam, Nederland
- Rekruttering
- Erasmus University Medical Centre
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Ta kontakt med:
- Nicolas van Mieghem, MD
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Edinburgh, Storbritannia
- Rekruttering
- University of Edinburgh
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Ta kontakt med:
- Mark Dweck, MD
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Bad Nauheim, Tyskland
- Rekruttering
- Kerckhoff-Klinik
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Ta kontakt med:
- Won K Kim, MD
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Hamburg, Tyskland
- Rekruttering
- University Heart and Vascular Center Hamburg
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Leipzig, Tyskland
- Rekruttering
- Heart Center Leipzig
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Ta kontakt med:
- Mohamed Abdel-Wahab, MD
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Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
18 år og eldre (Voksen, Eldre voksen)
Tar imot friske frivillige
Nei
Kjønn som er kvalifisert for studier
Alle
Prøvetakingsmetode
Ikke-sannsynlighetsprøve
Studiepopulasjon
This is a retrospective, investigator-initiated, multicenter registry including patients, who underwent TAVI for classical or paradoxical LFLG AS with available non-contrast MSCT data on AVC.
Furthermore, data will be gathered for the control groups of patients with high-gradient AS, who underwent TAVI, and heart failure patients with concomitant AS, who underwent medical treatment.
MSCT data will not be mandatory for control groups.
Beskrivelse
Inclusion Criteria:
- age ≥18 years
- patient gave written informed consent for data acquisition and transfer
- for LFLG AS: -- available non-contrast MSCT data on aortic valve calcification (AVC, Agatston Units)
Exclusion Criteria:
- LFLG AS without non-contrast MSCT data on AVC
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
Kohorter og intervensjoner
Gruppe / Kohort |
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Classical Low-Flow, Low-Gradient Aortic Stenosis
Classical Low-Flow, Low-Gradient Aortic Stenosis is defined as valve area <1 cm2, mean gradient <40 mmHg, ejection fraction <50% and stroke volume index (SVi) ≤35 mL/m2 by resting transthoracic echocardiography.
Dobutamine stress echocardiography is not mandatory for the definition of classical LFLG AS.
All patients in this subgroup underwent TAVI and have available data on aortic valve calcification.
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Paradoxical Low-Flow, Low-Gradient Aortic Stenosis
Paradoxical Low-Flow, Low-Gradient Aortic Stenosis is defined as valve area <1 cm2, mean gradient <40 mmHg, ejection fraction ≥50% and SVi ≤35 mL/m2 by resting transthoracic echocardiography.
All patients in this subgroup underwent TAVI and have available data on aortic valve calcification.
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High-Gradient Aortic Stenosis (Control group)
High-Gradient Aortic Stenosis is defined as valve area <1 cm2 and mean gradient >40 mmHg by resting transthoracic echocardiography.
All patients in this subgroup underwent TAVI.
Data on aortic valve calcification is not mandatory for this control group.
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Conservative treatment (Control group)
The subgroup includes all patients with (severe or non-severe) aortic stenosis, who underwent conservative treatment.
Data on aortic valve calcification is not mandatory for this control group.
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Hva måler studien?
Primære resultatmål
Resultatmål |
Tidsramme |
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Dødelighet av alle årsaker
Tidsramme: 12 måneder
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12 måneder
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Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
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Cardiovascular Mortality
Tidsramme: 12 months
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Incidence of cardiovascular death, defined as death attributable to myocardial ischemia and infarction, heart failure, cardiac arrest because of other or unknown cause, or cerebrovascular accident.
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12 months
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Rehospitalizations for congestive heart failure
Tidsramme: 12 months
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Incidence of new-onset or worsening signs and symptoms of heart failure that required urgent therapy and resulted in hospitalization, e.g. as assessed by patient interviews or hospital records.
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12 months
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Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Samarbeidspartnere
Etterforskere
- Hovedetterforsker: Marie-Annick Clavel, PhD, Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
- Hovedetterforsker: Niklas Schofer, MD, University Heart and Vascular Center Hamburg, Hamburg, Germany
- Hovedetterforsker: Sebastian Ludwig, MD, University Heart and Vascular Center Hamburg, Hamburg, Germany
Publikasjoner og nyttige lenker
Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.
Generelle publikasjoner
- Baumgartner H, Falk V, Bax JJ, De Bonis M, Hamm C, Holm PJ, Iung B, Lancellotti P, Lansac E, Rodriguez Munoz D, Rosenhek R, Sjogren J, Tornos Mas P, Vahanian A, Walther T, Wendler O, Windecker S, Zamorano JL; ESC Scientific Document Group. 2017 ESC/EACTS Guidelines for the management of valvular heart disease. Eur Heart J. 2017 Sep 21;38(36):2739-2791. doi: 10.1093/eurheartj/ehx391. No abstract available.
- Cueff C, Serfaty JM, Cimadevilla C, Laissy JP, Himbert D, Tubach F, Duval X, Iung B, Enriquez-Sarano M, Vahanian A, Messika-Zeitoun D. Measurement of aortic valve calcification using multislice computed tomography: correlation with haemodynamic severity of aortic stenosis and clinical implication for patients with low ejection fraction. Heart. 2011 May;97(9):721-6. doi: 10.1136/hrt.2010.198853. Epub 2010 Aug 18.
- Clavel MA, Messika-Zeitoun D, Pibarot P, Aggarwal SR, Malouf J, Araoz PA, Michelena HI, Cueff C, Larose E, Capoulade R, Vahanian A, Enriquez-Sarano M. The complex nature of discordant severe calcified aortic valve disease grading: new insights from combined Doppler echocardiographic and computed tomographic study. J Am Coll Cardiol. 2013 Dec 17;62(24):2329-38. doi: 10.1016/j.jacc.2013.08.1621. Epub 2013 Sep 24.
- Clavel MA, Pibarot P, Messika-Zeitoun D, Capoulade R, Malouf J, Aggarval S, Araoz PA, Michelena HI, Cueff C, Larose E, Miller JD, Vahanian A, Enriquez-Sarano M. Impact of aortic valve calcification, as measured by MDCT, on survival in patients with aortic stenosis: results of an international registry study. J Am Coll Cardiol. 2014 Sep 23;64(12):1202-13. doi: 10.1016/j.jacc.2014.05.066.
- Ludwig S, Gossling A, Waldschmidt L, Linder M, Bhadra OD, Voigtlander L, Schafer A, Deuschl F, Schirmer J, Reichenspurner H, Blankenberg S, Schafer U, Westermann D, Seiffert M, Conradi L, Schofer N. TAVR for low-flow, low-gradient aortic stenosis: Prognostic impact of aortic valve calcification. Am Heart J. 2020 Jul;225:138-148. doi: 10.1016/j.ahj.2020.03.013. Epub 2020 Apr 8.
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart (Faktiske)
1. april 2021
Primær fullføring (Forventet)
31. desember 2022
Studiet fullført (Forventet)
31. desember 2025
Datoer for studieregistrering
Først innsendt
2. juni 2021
Først innsendt som oppfylte QC-kriteriene
2. juni 2021
Først lagt ut (Faktiske)
4. juni 2021
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
4. juni 2021
Siste oppdatering sendt inn som oppfylte QC-kriteriene
2. juni 2021
Sist bekreftet
1. juni 2021
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- ATLAS TAVI
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