Jorn Brouwer1, Vincent J Nijenhuis1, Ronak Delewi1, Renicus S Hermanides1, Wouter Holvoet1, Christophe L F Dubois1, Peter Frambach1, Bernard De Bruyne1, Gert K van Houwelingen1, Jan A S Van Der Heyden1, Petr Toušek1, Frank van der Kley1, Ian Buysschaert1, Carl E Schotborgh1, Bert Ferdinande1, Pim van der Harst1, John Roosen1, Joyce Peper1, Frederick W F Thielen1, Leo Veenstra1, Dean R P P Chan Pin Yin1, Martin J Swaans1, Benno J W M Rensing1, Arnoud W J van 't Hof1, Leo Timmers1, Johannes C Kelder1, Pieter R Stella1, Jan Baan1, Jurriën M Ten Berg1. 1. From the Department of Cardiology, St. Antonius Hospital, Nieuwegein (J. Brouwer, V.J.N., J.P., D.R.P.P.C.P.Y., M.J.S., B.J.W.M.R., L.T., J.C.K., J.M.B.), the Department of Cardiology, Amsterdam University Medical Center, Amsterdam (R.D., J. Baan), the Department of Cardiology, Isala Hospital, Zwolle (R.S.H.), the Department of Cardiology, Maastricht University Medical Center (W.H., L.V., A.W.J.H.) and the Cardiovascular Research Institute Maastricht (A.W.J.H., J.M.B.), Maastricht, the Department of Cardiology, Medisch Spectrum Twente, Enschede (G.K.H.), the Department of Cardiology, Leiden University Medical Center, Leiden (F.K.), the Department of Cardiology, Haga Hospital, The Hague (C.E.S.), the Department of Cardiology, University Medical Center Groningen, Groningen (P.H.), Erasmus School of Health Policy and Management, Erasmus University, Rotterdam (F.W.F.T.), the Department of Cardiology, Zuyderland Medical Center, Heerlen (A.W.J.H.), and the Department of Cardiology, Division of Heart and Lungs, University Medical Center Utrecht, Utrecht University, Utrecht (P.R.S.) - all in the Netherlands; the Department of Cardiology, University Hospital Leuven, Leuven (C.L.F.D.), Cardiovascular Center Aalst, Onze Lieve Vrouwe Clinic (B.D.B.), and the Department of Cardiology, Algemeen Stedelijk Hospital Aalst (I.B.), Aalst, the Department of Cardiology, Sint-Jan Hospital, Brugge (J.A.S.V.D.H.), the Department of Cardiology, Hospital Oost-Limburg, Genk (B.F.), and the Department of Cardiology, Imelda Hospital, Bonheiden (J.R.) - all in Belgium; the Department of Cardiology, Institut National de Chirurgie Cardiaque et de Cardiologie Interventionnelle, Luxembourg, Luxembourg (P.F.); and the Department of Cardiology, University Hospital Královské Vinohrady and Third Medical Faculty, Charles University, Prague, Czech Republic (P.T.).
Abstract
BACKGROUND: The effect of single as compared with dual antiplatelet treatment on bleeding and thromboembolic events after transcatheter aortic-valve implantation (TAVI) in patients who do not have an indication for long-term anticoagulation has not been well studied. METHODS: In a randomized, controlled trial, we assigned a subgroup of patients who were undergoing TAVI and did not have an indication for long-term anticoagulation, in a 1:1 ratio, to receiveaspirin alone or aspirin plus clopidogrelfor 3 months. The two primary outcomes were all bleeding (including minor, major, and life-threatening or disabling bleeding) and non-procedure-related bleeding over a period of 12 months. Most bleeding at the TAVI puncture site was counted as non-procedure-related. The two secondary outcomes were a composite of death from cardiovascular causes, non-procedure-related bleeding, stroke, or myocardial infarction (secondary composite 1) and a composite of death from cardiovascular causes, ischemic stroke, or myocardial infarction (secondary composite 2) at 1 year, with both outcomes tested sequentially for noninferiority (noninferiority margin, 7.5 percentage points) and superiority. RESULTS: A total of 331 patients were assigned to receive aspirin alone and 334 were assigned to receive aspirin plus clopidogrel. A bleeding event occurred in 50 patients (15.1%) receiving aspirin alone and in 89 (26.6%) receiving aspirin plus clopidogrel (risk ratio, 0.57; 95% confidence interval [CI], 0.42 to 0.77; P = 0.001). Non-procedure-related bleeding occurred in 50 patients (15.1%) and 83 patients (24.9%), respectively (risk ratio, 0.61; 95% CI, 0.44 to 0.83; P = 0.005). A secondary composite 1 event occurred in 76 patients (23.0%) receiving aspirin alone and in 104 (31.1%) receiving aspirin plus clopidogrel (difference, -8.2 percentage points; 95% CI for noninferiority, -14.9 to -1.5; P<0.001; risk ratio, 0.74; 95% CI for superiority, 0.57 to 0.95; P = 0.04). A secondary composite 2 event occurred in 32 patients (9.7%) and 33 patients (9.9%), respectively (difference, -0.2 percentage points; 95% CI for noninferiority, -4.7 to 4.3; P = 0.004; risk ratio, 0.98; 95% CI for superiority, 0.62 to 1.55; P = 0.93). A total of 44 patients (13.3%) and 32 (9.6%), respectively, received oral anticoagulation during the trial. CONCLUSIONS: Among patients undergoing TAVI who did not have an indication for oral anticoagulation, the incidence of bleeding and the composite of bleeding or thromboembolic events at 1 year were significantly less frequent with aspirin than with aspirin plus clopidogrel administered for 3 months. (Funded by the Netherlands Organization for Health Research and Development; POPular TAVI EU Clinical Trials Register number, 2013-003125-28; ClinicalTrials.gov number, NCT02247128.).
RCT Entities:
BACKGROUND: The effect of single as compared with dual antiplatelet treatment on bleeding and thromboembolic events after transcatheter aortic-valve implantation (TAVI) in patients who do not have an indication for long-term anticoagulation has not been well studied. METHODS: In a randomized, controlled trial, we assigned a subgroup of patients who were undergoing TAVI and did not have an indication for long-term anticoagulation, in a 1:1 ratio, to receive aspirin alone or aspirin plus clopidogrel for 3 months. The two primary outcomes were all bleeding (including minor, major, and life-threatening or disabling bleeding) and non-procedure-related bleeding over a period of 12 months. Most bleeding at the TAVI puncture site was counted as non-procedure-related. The two secondary outcomes were a composite of death from cardiovascular causes, non-procedure-related bleeding, stroke, or myocardial infarction (secondary composite 1) and a composite of death from cardiovascular causes, ischemic stroke, or myocardial infarction (secondary composite 2) at 1 year, with both outcomes tested sequentially for noninferiority (noninferiority margin, 7.5 percentage points) and superiority. RESULTS: A total of 331 patients were assigned to receive aspirin alone and 334 were assigned to receive aspirin plus clopidogrel. A bleeding event occurred in 50 patients (15.1%) receiving aspirin alone and in 89 (26.6%) receiving aspirin plus clopidogrel (risk ratio, 0.57; 95% confidence interval [CI], 0.42 to 0.77; P = 0.001). Non-procedure-related bleeding occurred in 50 patients (15.1%) and 83 patients (24.9%), respectively (risk ratio, 0.61; 95% CI, 0.44 to 0.83; P = 0.005). A secondary composite 1 event occurred in 76 patients (23.0%) receiving aspirin alone and in 104 (31.1%) receiving aspirin plus clopidogrel (difference, -8.2 percentage points; 95% CI for noninferiority, -14.9 to -1.5; P<0.001; risk ratio, 0.74; 95% CI for superiority, 0.57 to 0.95; P = 0.04). A secondary composite 2 event occurred in 32 patients (9.7%) and 33 patients (9.9%), respectively (difference, -0.2 percentage points; 95% CI for noninferiority, -4.7 to 4.3; P = 0.004; risk ratio, 0.98; 95% CI for superiority, 0.62 to 1.55; P = 0.93). A total of 44 patients (13.3%) and 32 (9.6%), respectively, received oral anticoagulation during the trial. CONCLUSIONS: Among patients undergoing TAVI who did not have an indication for oral anticoagulation, the incidence of bleeding and the composite of bleeding or thromboembolic events at 1 year were significantly less frequent with aspirin than with aspirin plus clopidogrel administered for 3 months. (Funded by the Netherlands Organization for Health Research and Development; POPular TAVI EU Clinical Trials Register number, 2013-003125-28; ClinicalTrials.gov number, NCT02247128.).
Authors: Gudrun Lamm; Matthias Hammerer; Uta C Hoppe; Martin Andreas; Rudolf Berger; Ronald K Binder; Nikolaos Bonaros; Georg Delle-Karth; Matthias Frick; Michael Grund; Bernhard Metzler; Thomas Neunteufl; Philipp Pichler; Albrecht Schmidt; Wilfried Wisser; Andreas Zierer; Rainald Seitelberger; Michael Grimm; Alexander Geppert Journal: Wien Klin Wochenschr Date: 2021-03-23 Impact factor: 1.704
Authors: Antônio Fernando Diniz Freire; Filippe Barcellos Filippini; Tiago Costa Bignoto; Pedro Henrique Ferro de Brito; Pedro Felipe Gomes Nicz; Pedro Henrique Magalhães Craveiro de Melo; Ricardo Cavalcante E Silva; Marcelo Queiroga; Henrique Barbosa Ribeiro; Arthur Guilherme Magalhães Procópio; Cristiano Guedes Bezerra; Eberhard Grube; Alexandre Abizaid; Roberto Kalil Filho; Fábio S de Brito Journal: J Cardiol Cases Date: 2022-05-25