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Observational Study
. 2023 Dec;8(4):1030-1040.
doi: 10.1177/23969873231186863. Epub 2023 Jul 15.

Anticoagulation in acute ischemic stroke patients with mechanical heart valves: To bridge or not with heparin. The ESTREM study

Maurizio Paciaroni  1 Valeria Caso  1 Michele Romoli  2 Cecilia Becattini  1 Alexander Salerno  3 Costanza Rapillo  3   4 Fanny Simonnet  3 Davide Strambo  3 Isabella Canavero  5   6 Marialuisa Zedde  7 Rosario Pascarella  8 Sung-Il Sohn  9 Simona Sacco  10 Raffaele Ornello  10 Kristian Barlinn  11 Daniela Schoene  11 Jan Rahmig  11 Maria Giulia Mosconi  1 Ilaria Leone De Magistris  1 Andrea Alberti  1 Michele Venti  1 Giorgio Silvestrelli  12 Alfonso Ciccone  12 Marina Padroni  13 Michele Laudisi  13 Andrea Zini  14 Luana Gentile  14 Odysseas Kargiotis  15 Georgios Tsivgoulis  16 Rossana Tassi  17 Francesca Guideri  17 Maurizio Acampa  17 Luca Masotti  18 Elisa Grifoni  18 Alessandro Rocco  19 Marina Diomedi  19 Theodore Karapanayiotides  20 Stefan T Engelter  21   22 Alexandros A Polymeris  21 Annaelle Zietz  21 Fabio Bandini  23 Pietro Caliandro  24 Giuseppe Reale  24 Marco Moci  24 Aurelia Zauli  25 Manuel Cappellari  26 Andrea Emiliani  26 Antonio Gasparro  27 Valeria Terruso  27 Marina Mannino  27 Elisa Giorli  28 Danilo Toni  29 Marco Andrighetti  29 Anne Falcou  30 Lina Palaiodimou  16 George Ntaios  31 Dimitrios Sagris  31 Efstathia Karagkiozi  31 Anastasia Adamou  31 Panagiotis Halvatsiotis  32 Yuriy Flomin  33 Umberto Scoditti  34 Antonio Genovese  34 Nemanja Popovic  35 Leonardo Pantoni  36 Francesco Mele  36 Nicola Molitierno  36 Piergiorgio Lochner  37 Alessandro Pezzini  38 Massimo Del Sette  39 Davide Sassos  39 Sotirios Giannopoulos  40 Maria Kosmidou  40 Evangelos Ntais  40 Enrico Maria Lotti  41 Vincenzo Mastrangelo  41 Alberto Chiti  42 Andrea Naldi  43 Peter Vanacker  44   45   46 Mario Ferrante  47 Vera Volodina  48 Michelangelo Mancuso  49 Nicola Giannini  49 Marco Baldini  49 Kostantinos Vadikolias  50 Sofia Kitmeridou  50 Carlo Emanuele Saggese  51 Tiziana Tassinari  52 Valentina Saia  52 Patrik Michel  2
Affiliations
Observational Study

Anticoagulation in acute ischemic stroke patients with mechanical heart valves: To bridge or not with heparin. The ESTREM study

Maurizio Paciaroni et al. Eur Stroke J. 2023 Dec.

Abstract

Introduction: The best therapeutic strategy for patients with mechanical heart valves (MHVs) having acute ischemic stroke during treatment with vitamin K antagonists (VKAs) remain unclear. Being so, we compared the outcomes for: (i) full dose heparin along with VKA (bridging therapy group) and (ii) restarting VKA without heparin (nonbridging group).

Patients and methods: For this multicenter observational cohort study, data on consecutive acute ischemic stroke patients with MHV was retrospectively collected from prospective registries. Propensity score matching (PSM) was adopted to adjust for any treatment allocation confounders. The primary outcome was the composite of stroke, systemic embolism, symptomatic cerebral bleeding, and major extracerebral bleeding at 90 days.

Results: Overall, 255 out of 603 patients (41.3%) received bridging therapy: 36 (14.1%) had combined outcome, compared with 28 (8.0%) in the nonbridging group (adjusted OR 1.83; 95% CI 1.05-3.18; p = 0.03). Within the bridging group, 13 patients (5.1%) compared to 12 (3.4%) in the nonbridging group had an ischemic outcome (adjusted OR 1.71; 95% CI 0.84-3.47; p = 0.2); major bleedings were recorded in 23 (9.0%) in the bridging group and 16 (4.6%) in the nonbridging group (adjusted OR 1.88; 95% CI 0.95-3.73; p = 0.07). After PSM, 36 (14.2%) of the 254 bridging patients had combined outcome, compared with 23 (9.1%) of 254 patients in the nonbridging group (OR 1.66; 95% CI 0.95-2.85; p = 0.07).

Conclusion: Acute ischemic stroke patients with MHV undergoing bridging therapy had a marginally higher risk of ischemic or hemorrhagic events, compared to nonbridging patients.

Keywords: Mechanical heart valve; acute stroke; oral anticoagulants; prevention.

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Conflict of interest statement

Declaration of conflicting interestsThe author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: Paciaroni received honoraria as a member of the speaker bureau of Sanofi-Aventis, Bristol Meyer Squibb, Daiiki Sankyo and Pfizer. Becattini received honoraria as a member of the speaker bureau of Bristol Meyer Squibb and Bayer. Michel received research grant by Swiss National Science Foundation, Swiss Heart Foundation and University of Lausanne. Tsivgoulis has received funding for travel or speaker’s honoraria from Bayer, Pfizer, and Boehringer Ingelheim. He has served on scientific advisory boards for Bayer, Boehringer Ingelheim, and Daiichi Sankyo. Toni has received personal fees from Abbott, Bayer, Boehringer Ingelheim, Daiichi Sankyo, Medtronic, and Pfizer. Caso received honoraria as a member of the speaker bureau of Boehringer Ingelheim, Bayer, and Daiichi Sankyo (all fees were paid to Associazione Ricerca Stroke, Umbria). She received honoraria as consultant or advisory board member of Boehringer Ingelheim, Bayer, Daiichi Sankyo, and Pfizer. Ntaios reports speaker fees/advisory board/ research support from Bayer, Pfizer, Boehringer Ingelheim and Elpen. All fees are paid to his institution. Sacco has received personal fees as speaker or advisor from Abbott, Allergan, Astra Zeneca, Eli Lilly, Lundbeck, Novartis, NovoNordisk, Teva and research grants from Allergan, Novartis, and Uriach. Vanacker received honoraria as a member of the speaker bureau and as advisory board of Boehringer Ingelheim, Bristol Meyer Squibb, Daiichi Sankyo, Medtronic, EG and Pfizer. Del Sette has received honoraria for speaking from Bayer and Boehringer Ingelheim. Zedde received speaking and consulting fees from Daiichi Sankyo, Amicus Therapeutics, Sanofi Genzyme, Abbott, and Takeda. Cappellari has received consulting fees from Boehringer Ingelheim, Pfizer – Bristol Meyer Squibb, and Daiichi Sankyo. Flomin has received personal fees from Boehringer Ingelheim, Bayer and Takeda, grants, personal fees and nonfinancial support from Pfizer, personal fees and nonfinancial support from Sanofi Genzyme. Ornello has received nonfinancial support from Novartis, Allergan, and Teva. Giannopoulos has received funding for travel from Bayer and speaker’s honoraria from Pfizer. Zini has received consulting fees from Boehringer Ingelheim, CSL Behing and Alexion, Astra Zeneca. The other authors report no conflicts.

Figures

Figure 1.
Figure 1.
Cumulative risk of combined, ischemic or hemorrhagic endpoint events in patients receiving or not bridging therapy.
Figure 2.
Figure 2.
Cumulative risk of combined, ischemic or hemorrhagic endpoint events in patients receiving or not bridging therapy after Propensity Score Matching.
Figure 3.
Figure 3.
Cumulative risk of combined, ischemic or hemorrhagic endpoint events stratified according to timing of anticoagulant therapy initiation in patients receiving or not bridging therapy.

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