BACKGROUND AND PURPOSE: Silent brain infarctions are associated with an increased risk of stroke in healthy individuals. Risk of recurrent stroke in patients with both symptomatic and silent brain infarction (SBI) has only been investigated in patients with cardioembolic stroke in the European Atrial Fibrillation Trial. We assessed whether patients with recent noncardioembolic stroke and SBI detected on MRI are at increased risk for recurrent stroke, other cardiovascular events, and mortality. METHODS: The prevalence of SBI detected on MRI was assessed in 1014 patients enrolled in the imaging substudy of the Prevention Regimen for Effectively Avoiding Second Strokes (PRoFESS) trial. The primary outcome was first recurrence of stroke in patients with both symptomatic stroke and SBI in comparison with age- and sex-matched patients with stroke without SBI. Secondary outcomes were a combined vascular end point, other vascular events, and mortality. The 2 groups were compared using conditional logistic regression. RESULTS:Silent brain infarction was detected in 207 (20.4%) of the 1014 patients. Twenty-seven (13.0%) patients with SBI and 19 (9.2%) without SBI had a recurrent stroke (OR, 1.42; 95% CI, 0.79-2.56; P=0.24) during a mean follow-up of 2.5 years. Similarly, there was no statistically significant difference for all secondary outcome parameters between patients with SBI and matched patients without SBI. CONCLUSIONS: The presence of SBI in patients with recent mild noncardioembolic ischemic stroke could not be shown to be an independent risk factor for recurrent stroke, other vascular events, or a higher mortality rate. CLINICAL TRIAL REGISTRATION: URL: http://clinicaltrials.gov. Unique identifier: NCT00153062.
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BACKGROUND AND PURPOSE:Silent brain infarctions are associated with an increased risk of stroke in healthy individuals. Risk of recurrent stroke in patients with both symptomatic and silent brain infarction (SBI) has only been investigated in patients with cardioembolic stroke in the European Atrial Fibrillation Trial. We assessed whether patients with recent noncardioembolic stroke and SBI detected on MRI are at increased risk for recurrent stroke, other cardiovascular events, and mortality. METHODS: The prevalence of SBI detected on MRI was assessed in 1014 patients enrolled in the imaging substudy of the Prevention Regimen for Effectively Avoiding Second Strokes (PRoFESS) trial. The primary outcome was first recurrence of stroke in patients with both symptomatic stroke and SBI in comparison with age- and sex-matched patients with stroke without SBI. Secondary outcomes were a combined vascular end point, other vascular events, and mortality. The 2 groups were compared using conditional logistic regression. RESULTS:Silent brain infarction was detected in 207 (20.4%) of the 1014 patients. Twenty-seven (13.0%) patients with SBI and 19 (9.2%) without SBI had a recurrent stroke (OR, 1.42; 95% CI, 0.79-2.56; P=0.24) during a mean follow-up of 2.5 years. Similarly, there was no statistically significant difference for all secondary outcome parameters between patients with SBI and matched patients without SBI. CONCLUSIONS: The presence of SBI in patients with recent mild noncardioembolic ischemic stroke could not be shown to be an independent risk factor for recurrent stroke, other vascular events, or a higher mortality rate. CLINICAL TRIAL REGISTRATION: URL: http://clinicaltrials.gov. Unique identifier: NCT00153062.
Authors: Rohit R Das; Sudha Seshadri; Alexa S Beiser; Margaret Kelly-Hayes; Rhoda Au; Jayandra J Himali; Carlos S Kase; Emelia J Benjamin; Joseph F Polak; Christopher J O'Donnell; Mitsuhiro Yoshita; Ralph B D'Agostino; Charles DeCarli; Philip A Wolf Journal: Stroke Date: 2008-06-26 Impact factor: 7.914
Authors: Ralph L Sacco; Hans-Christoph Diener; Salim Yusuf; Daniel Cotton; Stephanie Ounpuu; William A Lawton; Yuko Palesch; Reneé H Martin; Gregory W Albers; Philip Bath; Natan Bornstein; Bernard P L Chan; Sien-Tsong Chen; Luis Cunha; Björn Dahlöf; Jacques De Keyser; Geoffrey A Donnan; Conrado Estol; Philip Gorelick; Vivian Gu; Karin Hermansson; Lutz Hilbrich; Markku Kaste; Chuanzhen Lu; Thomas Machnig; Prem Pais; Robin Roberts; Veronika Skvortsova; Philip Teal; Danilo Toni; Cam Vandermaelen; Thor Voigt; Michael Weber; Byung-Woo Yoon Journal: N Engl J Med Date: 2008-08-27 Impact factor: 91.245
Authors: Salim Yusuf; Hans-Christoph Diener; Ralph L Sacco; Daniel Cotton; Stephanie Ounpuu; William A Lawton; Yuko Palesch; Reneé H Martin; Gregory W Albers; Philip Bath; Natan Bornstein; Bernard P L Chan; Sien-Tsong Chen; Luis Cunha; Björn Dahlöf; Jacques De Keyser; Geoffrey A Donnan; Conrado Estol; Philip Gorelick; Vivian Gu; Karin Hermansson; Lutz Hilbrich; Markku Kaste; Chuanzhen Lu; Thomas Machnig; Prem Pais; Robin Roberts; Veronika Skvortsova; Philip Teal; Danilo Toni; Cam VanderMaelen; Thor Voigt; Michael Weber; Byung-Woo Yoon Journal: N Engl J Med Date: 2008-08-27 Impact factor: 91.245