Refining clinical risk stratification for predicting stroke and thromboembolism in atrial fibrillation using a novel risk factor-based approach: The Euro Heart Survey on atrial fibrillation

Gregory Y.H. Lip*, Robby Nieuwlaat, Ron Pisters, Deirdre A. Lane, Harry J.G.M. Crijns, Dieter Andresen, A. John Camm, Wynn Davies, Alessandro Capucci, Samuel Le´vy, Gu¨nter Breithardt, Stuart Cobbe, Jean Yves Le Heuzey, Massimo Santini, Panos Vardas, Malika Manini, Claire Bramley, Vale´rie Laforest, Charles Taylor, Susan Del GaisoKurt Huber, Guy De Backer, Vera Sirakova, Roman Cerbak, Per Thayssen, Seppo Lehto, Jean Jacques Blanc, Franc¸ois Delahaye, Bondo Kobulia, Uwe Zeymer, Dennis Cokkinos, Kristof Karlocai, Ian Graham, Emer Shelley, Shlomo Behar, Aldo Maggioni, Lino Gonc¸alves, Virginija Grabauskiene, Inger Asmussen, Jaap Deckers, Janina Stepinska, Vyacheslav Mareev, Zorana Vasiljevic, Igor Riecansky, Miran F. Kenda, Angeles Alonso, Jose´ Luis Lopez-Sendon, Annika Rosengren, Peter Buser, Tugrul Okay, Oleg Sychov, Kevin Fox, Peter Schofield, Maarten Simoons, David Wood, Alex Battler, Eric Boersma, Kim Fox, Michel Komajda, Keith McGregor, Barbara Mulder, Sylvia Priori, Lars Ryde´n, Alec Vahanian, William Wijns, Sanofi-Aventis, S. V. Grigoryan, I. Apetyan, S. Aroyan, L. Azarapetyan, Anahit Anvari, Michael Gottsauner-Wolf, Stefan Pfaffenberger, Kadriye Aydinkoc, Karim Kalla, Martina Penka, Heinz Drexel, Peter Langer, Luc A. Pierard, Victor Legrand, Dominique Blommaert, E. Schroeder, Isabelle Mancini, P. Geelen, P. Brugada, Marc De Zutter, Christiaan Vrints, Marc Vercammen, Marielle Morissens, Boyanov Borisov, Valentin Asenov Petrov, Maria Marinova, Alexandrova Assen, Rachev Goudev, Yavor Peychev, Vassil Stoyanovsky, Evgeni Stoynev, Stjepan Kranjcevic, Joseph Moutiris, Marios Ioannides, Dominique Evequoz, Jaroslava Spacilova, Miroslav Novak, Martin Eisenberger, Jolana Mullerova, Josef Kautzner, Lucie Riedlbauchova, Jan Petru`, Milos Taborsky, Helle Cappelen, Yasser A. Sharaf, B. S.S. Ibrahim, Khalid Tammam, Aly Saad, Helmy Elghawaby, Hamed Zaky Sherif, Heba Farouk, Arlett Mielke, Gunter Breithardt, Markus Engelen, Paulus Kirchhof, Pia Zimmermann, F. Fernandez Aviles, Jeronimo Rubio, F. Malpartida, M. Corona, Luis Tercedor Sanchez, Jose Miguel, Lozano Herrera, Aurelio Quesada, Antonio J.Munoz Garcia, Carlos Sanchez Gonzalez, M. Soledad Alcasena Juango, Jesus Berjon-Reyero, Josep M. Alegret, J. M.Cruz Fernandez, Cesar Carrascosa, Rosillo Antonio Fernandez Romero, Miguel Gonza´lez Lara, Jose´ L.Lopez Sendon, Jose´ Juan Gomez de Diego, Luis Sosa Martin, Maria Irurita, Norbero Herrera Guttierez, Juan Ramon Siles Rubio, Isabel Antorrena, Alicia Bautista Paves, Antonio Salvador, Maria Dolores Orriach, A. Alonso Garcia, Francisco Epelde, Vicente Bertomeu Martinez, Antonio Berruezo Sanchez, Carlos Pinero Galvez, Rafael Fernandez Rivero, Antonio Hernandez Madrid, Gonzalo Baron-Esquivias, Rafael Peinado, Jose´ Antonio Gomez Guindal, Tomas Ripoll Vera, Emilio Luengo Fernandez, Ricardo Gayan, Javier Garcia, Andres Bodegas, Jesus Toril Lopez, Julio Martinez Florez, Cristobal Lozano Cabezas, Eduardo Vazquez Ruiz de Castroviejo, Juan Munoz Bellido, Maria Eugenia Ruiz, Kirsti Savolainen, Markku Nieminen, Lauri Toivonen, Mikko Syvanne, Mervi Pietila, Daniel Galley, Christine Beltra, Alain Gay, J. C. Daubert, Guillaume Lecocq, Christine Poulain, J. G.F.C. Cleland, Rhidian Shelton, A. Choudhury, Gulnara Abuladze, Irina Jashi, Anastasia Tsiavou, G. Giamouzis, N. Dagres, A. Kostopoulou, Domproglou Tsoutsanis, C. Stefanadis, George Latsios, Ioannis Vogiatzis, Alexandros Gotsis, Paraskevi Bozia, Maria Karakiriou, Spyridon Koulouris, John Parissis, George Kostakis, Nikos Kouris, Dimitra Kontogianni, Koutroubas Athanasios, Alexandros Douras, Themistoklis Tsanakis, Mary Marketou, Nikolaos Patsourakos, Laszlo Czopf, Robert Halmosi, Istvan Pre´da, Eva Csoti, Andrea Badics, Boris Strasberg, Nahum A. Freedberg, Amos Katz, Eli Zalzstein, Aviva Grosbard, E. Goldhammer, Menachem Nahir, Menashe Epstein, Ida Vider, David Luria, Lori Mandelzweig, Bruno Aloisi, Alfio Cavallaro, Emanuele Antonielli, Baldassarre Doronzo, Diego Pancaldo, Carlo Mazzola, Liliana Buontempi, Valeria Calvi, Giuseppe Giuffrida, Antonino Figlia, Francesco Ippolito, Gian Paolo Gelmini, N. Gaibazzi, Virgilio Ziacchi, Francesco De Tommasi, Federico Lombardi, Cesare Fiorentini, Paolo Terranova, Pietro Maiolino, Muhamad Albunni, Plinio Pinna-Pintor, Stefano Fumagalli, Guilio Masotti, Lorenzo Boncinelli, Domenico Rossi, Giovanni Maria Santoro, Massimo Fioranelli, Franco Naccarella, Stefano Sdringola Maranga, Giovannina Lepera, Barbara Bresciani, Elena Seragnoli, Mara Cantelli Forti, Valentina Cortina, Giacinto Baciarello, Paolo Cicconetti, Antonio Lax, Federica Vitali, Diran Igidbashian, Luisa Scarpino, Sergio Terrazzino, Luigi Tavazzi, Francesco Cantu, Francesco Pentimalli, Salvatore Novo, Giuseppe Coppola, Gianluca Zingarini, Giuseppe Ambrozio, Paolo Moruzzi, Sergio Callegari, Gabriele Saccomanno, Paolo Russo, Emanuele Carbonieri, Anna Paino, Marco Zanetta, Enzo Barducci, Roberto Cemin, Werner Rauhe, Walter Pitscheider, Marina Meloni, Sergio Mariano Marchi, Marco Di Gennaro, Sergio Calcagno, Paola Squaratti, Francesco Quartili, Patrizia Bertocchi, Mario De Martini, Giuseppe Mantovani, Roman Komorovsky, Alessandro Desideri, Leopoldo Celegon, Luigi Tarantini, Giuseppe Catania, Donata Lucci, Francesca Bianchini, Aras Puodziukynas, Ausra Kavoliuniene, Vilija Barauskiene, Audrius Aidietis, Jurate Barysiene, Vitas Vysniauskas, Irena Zukauskiene, Nijole Kazakeviciene, Ljubica Georgievska-Ismail, Lidija Poposka, Eleonora Vataman, Aurel A. Grosu, Wilma Scholte op Reimer, Esther de Swart, Mattie Lenzen, Chris Jansen, Ritzo Brons, Henriette Tebbe, D. C.A. van Hoogenhuyze, M. J. Veerhoek, Maria Kamps, D. Haan, Nitolanda van Rijn, Annette Bootsma, Leo Baur, Adrie van den, Heidi Fransen, Luc Eurlings, Joan Meeder, M. J. De Boer, Jobst Winter, Herman Broers, Chris Werter, M. Bijl, Saskia Versluis, Malgorzata Milkowska, Beata Wozakowska-Kaplon, Marianna Janion, Lidia Lepska, Grazyna Swiatecka, Piotr Kokowicz, Jacek Cybulski, Aleksandr Gorecki, Marcin Szulc, Jerzy Rekosz, Rafal Manczak, Anna Maria Wnuk-Wojnar, M. Trusz-Gluza, Anna Rybicka-Musialik, Jaroslaw Myszor, Michal Szpajer, Krzysztof Cymerman, Jerzy Sadowski, Maria Sniezek-Maciejewska, Mariola Ciesla-Dul, Izabela Gorkiewicz-Kot, Tomasz Grodzicki, Krzysztof Rewiuk, Leszek Kubik, Jacek Lewit, Joao Manuel Frazao Rodrigues de Sousa, Rafael Ferreira, Antonio Freitas, Joao Carlos Araujo Morais, Rui Pires, M. J.Veloso Gomes, Paula Gago, Rui Alexandre C. Candeias, Luis Nunes, Joao Vitor Miranda Sa, Miguel Ventura, Mario de Oliveira, Luis Brandao Alves, Ioan Bostaca, Codin T. Olariu, G. A. Dan, Anca Dan, Cristian Podoleanu, Attila Frigy, George I.M. Georgescu, Catalina Arsenescu, Cristian Statescu, Radu Sascau, Dan L. Dimitrascu, Raluca Rancea, Yuri V. Shubik, Dmitry Duplyakov, Marina Shalak, Marine Danielyan, Albert Galyavich, Venera Zakirova, Robert Hatala, Gabriela Kaliska, Jan Kmec, Igor Zupan, Jerneja Tasie`, Damijan Vokac, Nils Edvardsson, Dritan Poci, Habib Gamra, Hichem Denguir, Ahmet Sepetoglu, Alev Arat-Ozkan, Mariya Orynchak, Elena Paliy, I. Vakalyuk, David Malidze, Rostyslav Prog, Myckola Ivanovich Yabluchansky, Nataliya Volodimirovna Makienko, Tatjana Potpara, Sofija Knezevic, Miomir Randjelovic

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5570 Scopus citations

Abstract

Background: Contemporary clinical risk stratification schemata for predicting stroke and thromboembolism (TE) in patients with atrial fibrillation (AF) are largely derived from risk factors identified from trial cohorts. Thus, many potential risk factors have not been included. Methods: We refined the 2006 Birmingham/National Institute for Health and Clinical Excellence (NICE) stroke risk stratification schema into a risk factor-based approach by reclassifying and/or incorporating additional new risk factors where relevant. This schema was then compared with existing stroke risk stratification schema in a real-world cohort of patients with AF (n = 1,084) from the Euro Heart Survey for AF. Results: Risk categorization differed widely between the different schemes compared. Patients classified as high risk ranged from 10.2% with the Framingham schema to 75.7% with the Birmingham 2009 schema. The classic CHADS 2 (Congestive heart failure, Hypertension, Age > 75, Diabetes, prior Stroke/transient ischemic attack) schema categorized the largest proportion (61.9%) into the intermediate-risk strata, whereas the Birmingham 2009 schema classified 15.1% into this category. The Birmingham 2009 schema classified only 9.2% as low risk, whereas the Framingham scheme categorized 48.3% as low risk. Calculated C-statistics suggested modest predictive value of all schema for TE. The Birmingham 2009 schema fared marginally better (C-statistic, 0.606) than CHADS 2 . However, those classified as low risk by the Birmingham 2009 and NICE schema were truly low risk with no TE events recorded, whereas TE events occurred in 1.4% of low-risk CHADS 2 subjects. When expressed as a scoring system, the Birmingham 2009 schema (CHA 2 DS 2 -VASc acronym) showed an increase in TE rate with increasing scores ( P value for trend = .003). Conclusion: Our novel, simple stroke risk stratification schema, based on a risk factor approach, provides some improvement in predictive value for TE over the CHADS 2 schema, with low event rates in low-risk subjects and the classification of only a small proportion of subjects into the intermediate-risk category. This schema could improve our approach to stroke risk stratification in patients with AF.

Original languageEnglish
Pages (from-to)263-272
Number of pages10
JournalChest
Volume137
Issue number2
DOIs
StatePublished - 1 Feb 2010

Funding

FundersFunder number
Austrian Heart Foundation
Euro Heart Survey
Netherlands Heart Foundation
Spanish Cardiac Society
Swedish Heart and Lung Foundation
AstraZeneca
Sanofi
Österreichische Kardiologische Gesellschaft
Sociedade Portuguesa de Cardiologia

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