Leonard Leong Litt Yeo

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BACKGROUND Transcranial Doppler (TCD) ultrasonography is a noninvasive bedside tool that can evaluate cerebral blood flow hemodynamics in major intracranial arteries. TCD-derived pulsatility index (PI) is believed to be influenced by intracranial pressure (ICP). OBJECTIVE To correlate TCD-PI with cerebrospinal fluid (CSF) pressure (representing ICP),(More)
BACKGROUND AND AIMS Acute ischemic stroke (AIS) due to basilar artery thrombosis (BAT) causes high mortality and severe disability. Early neurological assessment and timely thrombolysis might improve outcome. BAT is difficult to diagnose due to wide spectrum of presentation and decreased conscious level. Emergency physicians often intubate BAT patients with(More)
Intracranial bleeding is an important and dangerous complication associated with thrombolytic therapy for acute ischemic stroke. Spinal hemorrhage has been reported after systemic thrombolysis for various conditions other than acute ischemic stroke. Our patient presented with an acute ischemic stroke and showed significant clinical recovery during(More)
BACKGROUND Recanalization of occluded intracranial arteries remains the aim of intravenous (IV) tissue plasminogen activator (tPA) therapy in acute ischemic stroke (AIS). OBJECTIVE To examine the timing and impact of recanalization on functional outcomes in AIS. DESIGN A longitudinal cohort of consecutive IV tPA–treated patients with AIS from January(More)
The artery of Percheron is an uncommon anatomic variant in which a solitary trunk originates from either posterior cerebral artery and provides arterial supply to bilateral paramedian thalami and the rostral midbrain (Fig. 1). Recognition of this anatomical variant is essential in establishing the stroke mechanism in bilateral paramedian thalamic infarcts.(More)
OBJECTIVE We compared intracranial collaterals on pretreatment and day 2 brain CT angiograms (CTA) to assess their evolution and relationship with functional outcomes in acute ischemic stroke (AIS) patients treated with IV tissue plasminogen activator (tPA). METHODS Consecutive AIS patients who underwent pretreatment and day 2 CTA and received IV tPA(More)
OBJECT Both the older and the recent extracranial-intracranial (EC-IC) bypass trials for symptomatic carotid occlusion failed to demonstrate a reduction in stroke recurrence. However, the role of superficial temporal artery (STA)-middle cerebral artery (MCA) bypass in patients with symptomatic intracranial stenoocclusive disease has been rarely evaluated.(More)