TY - JOUR
T1 - Higher Risk of Ischemic Events in Secondary Prevention for Patients with Persistent Than Those with Paroxysmal Atrial Fibrillation
AU - SAMURAI Study Investigators
AU - Koga, Masatoshi
AU - Yoshimura, Sohei
AU - Hasegawa, Yasuhiro
AU - Shibuya, Satoshi
AU - Ito, Yasuhiro
AU - Matsuoka, Hideki
AU - Takamatsu, Kazuhiro
AU - Nishiyama, Kazutoshi
AU - Todo, Kenichi
AU - Kimura, Kazumi
AU - Furui, Eisuke
AU - Terasaki, Tadashi
AU - Shiokawa, Yoshiaki
AU - Kamiyama, Kenji
AU - Takizawa, Shunya
AU - Okuda, Satoshi
AU - Okada, Yasushi
AU - Kameda, Tomoaki
AU - Nagakane, Yoshinari
AU - Yagita, Yoshiki
AU - Kario, Kazuomi
AU - Shiozawa, Masayuki
AU - Sato, Shoichiro
AU - Yamagami, Hiroshi
AU - Arihiro, Shoji
AU - Toyoda, Kazunori
N1 - Publisher Copyright:
© 2016 American Heart Association, Inc.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - Background and Purpose - The discrimination between paroxysmal and sustained (persistent or permanent) atrial fibrillation (AF) has not been considered in the approach to secondary stroke prevention. We aimed to assess the differences in clinical outcomes between mostly anticoagulated patients with sustained and paroxysmal AF who had previous ischemic stroke or transient ischemic attack. Methods - Using data from 1192 nonvalvular AF patients with acute ischemic stroke or transient ischemic attack who were registered in the SAMURAI-NVAF study (Stroke Management With Urgent Risk-Factor Assessment and Improvement-Nonvalvular AF; a prospective, multicenter, observational study), we divided patients into those with paroxysmal AF and those with sustained AF. We compared clinical outcomes between the 2 groups. Results - The median follow-up period was 1.8 (interquartile range, 0.93-2.0) years. Of the 1192 patients, 758 (336 women; 77.9±9.9 years old) and 434 (191 women; 77.3±10.0 years old) were assigned to the sustained AF group and paroxysmal AF groups, respectively. After adjusting for sex, age, previous anticoagulation, and initial National Institutes of Health Stroke Scale score, sustained AF was negatively associated with 3-month independence (multivariable-adjusted odds ratio, 0.61; 95% confidence interval, 0.43-0.87; P=0.006). The annual rate of stroke or systemic embolism was 8.3 and 4.6 per 100 person-years, respectively (multivariable-adjusted hazard ratio, 1.95; 95% confidence interval, 1.26-3.14) and that of major bleeding events was 3.4 and 3.1, respectively (hazard ratio, 1.13; 95% confidence interval, 0.63-2.08). Conclusions - Among patients with previous ischemic stroke or transient ischemic attack, those with sustained AF had a higher risk of stroke or systemic embolism compared with those with paroxysmal AF. Clinical Trial Registration - URL: http://www.clinicaltrials.gov. Unique identifier: NCT01581502.
AB - Background and Purpose - The discrimination between paroxysmal and sustained (persistent or permanent) atrial fibrillation (AF) has not been considered in the approach to secondary stroke prevention. We aimed to assess the differences in clinical outcomes between mostly anticoagulated patients with sustained and paroxysmal AF who had previous ischemic stroke or transient ischemic attack. Methods - Using data from 1192 nonvalvular AF patients with acute ischemic stroke or transient ischemic attack who were registered in the SAMURAI-NVAF study (Stroke Management With Urgent Risk-Factor Assessment and Improvement-Nonvalvular AF; a prospective, multicenter, observational study), we divided patients into those with paroxysmal AF and those with sustained AF. We compared clinical outcomes between the 2 groups. Results - The median follow-up period was 1.8 (interquartile range, 0.93-2.0) years. Of the 1192 patients, 758 (336 women; 77.9±9.9 years old) and 434 (191 women; 77.3±10.0 years old) were assigned to the sustained AF group and paroxysmal AF groups, respectively. After adjusting for sex, age, previous anticoagulation, and initial National Institutes of Health Stroke Scale score, sustained AF was negatively associated with 3-month independence (multivariable-adjusted odds ratio, 0.61; 95% confidence interval, 0.43-0.87; P=0.006). The annual rate of stroke or systemic embolism was 8.3 and 4.6 per 100 person-years, respectively (multivariable-adjusted hazard ratio, 1.95; 95% confidence interval, 1.26-3.14) and that of major bleeding events was 3.4 and 3.1, respectively (hazard ratio, 1.13; 95% confidence interval, 0.63-2.08). Conclusions - Among patients with previous ischemic stroke or transient ischemic attack, those with sustained AF had a higher risk of stroke or systemic embolism compared with those with paroxysmal AF. Clinical Trial Registration - URL: http://www.clinicaltrials.gov. Unique identifier: NCT01581502.
KW - atrial fibrillation
KW - hemorrhage
KW - secondary prevention
KW - stroke
KW - thromboembolism
UR - http://www.scopus.com/inward/record.url?scp=84983086769&partnerID=8YFLogxK
U2 - 10.1161/STROKEAHA.116.013746
DO - 10.1161/STROKEAHA.116.013746
M3 - Article
C2 - 27531346
AN - SCOPUS:84983086769
SN - 0039-2499
VL - 47
SP - 2582
EP - 2588
JO - Stroke
JF - Stroke
IS - 10
ER -