Udayaraj Umasankar

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OBJECTIVE To investigate whether the location and extent of the CT hyperdense artery sign (HAS) at presentation affects response to IV alteplase in the randomized controlled Third International Stroke Trial (IST-3). METHODS All prerandomization and follow-up (24-48 hours) CT brain scans in IST-3 were assessed for HAS presence, location, and extent by(More)
This is a case report of a lady who presented with pupil-sparing Weber's syndrome. She had left oculomotor nerve palsy with normal pupil and right hemiparesis. The patient subsequently made a good recovery. An ischemic lesion of the lower mid-brain was demonstrated on the MRI scan of the brain, which corresponds to the motor nucleus of the oculomotor nerve.(More)
Ischaemic stroke can result in approximately 2 million brain neurones being damaged for each minute that it is left untreated. Various trials and studies such as the National Institute of Neurologic Disorders (NINDS) trial, the European Cooperative Acute Stroke Study (ECASS), ECASS II, and the Alteplase Thrombolysis for Acute Noninterventional Therapy in(More)
A 74-year-old man developed sudden onset of painless persistent partial loss of vision in the right eye 3 days after right total knee replacement. The initial investigation was for amaurosis fugax with a normal CT scan of the brain but the carotid Doppler confirmed >90% stenosis of the right internal carotid artery. Urgent ophthalmological review confirmed(More)
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