BACKGROUND AND PURPOSE: Cerebral microhemorrhages (MHs) are common among patients presenting with acute ischemic stroke and may predict both subsequent ischemic and hemorrhagic strokes. METHODS: We prospectively studied patients with and without MHs presenting within 12 hours of their ischemic stroke or transient ischemic attack (TIA). A magnetic resonance (MR) scan was performed within 24 hours of symptom(s) onset. The primary outcome was disabling or fatal stroke at 18 months. RESULTS: An MR scan was done in 236 patients with acute ischemic stroke or TIA. Forty-five (19.1%) patients had an MH on a baseline MR scan. Patients with MHs were 2.8x (10.8% versus 4.0%; P=0.036) more likely to have a subsequent disabling or fatal stroke than patients without an MH. The risk of symptomatic intracerebral hemorrhage was not statistically significant among MH and non-MH patients (3.3% versus 0.8%; P=0.31). CONCLUSIONS: The presence of cerebral MH(s) in patients with acute ischemic stroke or TIA predicts recurrent disabling and fatal strokes. This risk is mainly assumed by recurrent ischemic strokes.
BACKGROUND AND PURPOSE:Cerebral microhemorrhages (MHs) are common among patients presenting with acute ischemic stroke and may predict both subsequent ischemic and hemorrhagic strokes. METHODS: We prospectively studied patients with and without MHs presenting within 12 hours of their ischemic stroke or transient ischemic attack (TIA). A magnetic resonance (MR) scan was performed within 24 hours of symptom(s) onset. The primary outcome was disabling or fatal stroke at 18 months. RESULTS: An MR scan was done in 236 patients with acute ischemic stroke or TIA. Forty-five (19.1%) patients had an MH on a baseline MR scan. Patients with MHs were 2.8x (10.8% versus 4.0%; P=0.036) more likely to have a subsequent disabling or fatal stroke than patients without an MH. The risk of symptomatic intracerebral hemorrhage was not statistically significant among MH and non-MH patients (3.3% versus 0.8%; P=0.31). CONCLUSIONS: The presence of cerebral MH(s) in patients with acute ischemic stroke or TIA predicts recurrent disabling and fatal strokes. This risk is mainly assumed by recurrent ischemic strokes.
Authors: Agnes Bergerat; Julius Decano; Chang-Jiun Wu; Hyungwon Choi; Alexey I Nesvizhskii; Ann Marie Moran; Nelson Ruiz-Opazo; Martin Steffen; Victoria Lm Herrera Journal: Mol Med Date: 2011-04-14 Impact factor: 6.354
Authors: M Wintermark; P C Sanelli; G W Albers; J Bello; C Derdeyn; S W Hetts; M H Johnson; C Kidwell; M H Lev; D S Liebeskind; H Rowley; P W Schaefer; J L Sunshine; G Zaharchuk; C C Meltzer Journal: AJNR Am J Neuroradiol Date: 2013-08-01 Impact factor: 3.825
Authors: Julius L Decano; Jason C Viereck; Ann C McKee; James A Hamilton; Nelson Ruiz-Opazo; Victoria L M Herrera Journal: Circulation Date: 2009-03-09 Impact factor: 29.690