https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Assessing response to stroke thrombolysis validation of 24-hour multimodal magnetic resonance imaging https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:22216 Wed 11 Apr 2018 14:00:50 AEST ]]> Pathophysiological determinants of worse stroke outcome in atrial fibrillation https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:9613 Sat 24 Mar 2018 08:39:38 AEDT ]]> CT perfusion improves diagnostic accuracy and confidence in acute ischaemic stroke https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19328 Sat 24 Mar 2018 07:52:14 AEDT ]]> Worse stroke outcome in atrial fibrillation is explained by more severe hypoperfusion, infarct growth, and hemorrhagic transformation https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21366 4 to >8 s. Hemorrhagic transformation was classified according to the European Cooperative Acute Stroke Studies criteria. Results: Of the 175 patients, 28 had definite atrial fibrillation, 30 probable atrial fibrillation, 111 no atrial fibrillation, and six were excluded due to insufficient imaging data. At baseline, patients with definite atrial fibrillation had more severe hypoperfusion (median time to maximum >8 s, volume 48 vs. 29 ml, P = 0·02) compared with patients with no atrial fibrillation. At outcome, patients with definite atrial fibrillation had greater infarct growth (median volume 47 vs. 8 ml, P = 0·001), larger infarcts (median volume 75 vs. 23 ml, P = 0·001), more frequent parenchymal hematoma grade hemorrhagic transformation (30% vs. 10%, P = 0·03), worse functional outcomes (median modified Rankin scale score 4 vs. 3, P = 0·03), and higher mortality (36% vs. 16%, P = 0·03) compared with patients with no atrial fibrillation. Definite atrial fibrillation was independently associated with increased parenchymal hematoma (odds ratio = 6·05, 95% confidence interval 1·60–22·83) but not poor functional outcome (modified Rankin scale 3–6, odds ratio = 0·99, 95% confidence interval 0·35–2·80) or mortality (odds ratio = 2·54, 95% confidence interval 0·86–7·49) three-months following stroke, after adjusting for other baseline imbalances. Conclusion: Atrial fibrillation is associated with greater volumes of more severe baseline hypoperfusion, leading to higher infarct growth, more frequent severe hemorrhagic transformation and worse stroke outcomes.]]> Sat 24 Mar 2018 07:51:25 AEDT ]]>