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Dive into the research topics where Bernard P Chan is active.

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Featured researches published by Bernard P Chan.


Journal of Clinical Neuroscience | 2007

Vasospasm followed by diastolic flow reversal in the intracranial arteries after subarachnoid haemorrhage

Vijay K. Sharma; Ashok W. Pereira; Bernard P Chan

Vasospasm and raised intracranial pressure (ICP) are common complications in subarachnoid haemorrhage (SAH) due to ruptured intracranial aneurysm. Vasospasm can be reliably monitored by repeated transcranial Doppler (TCD) examinations. The changes in flow velocities due to vasospasm are useful for early diagnosis, monitoring effectiveness of treatment and determining prognosis. Intracranial pressure can also increase to dangerous levels and affect blood flow in the intracranial circulation. These changes in ICP may be evaluated by the spectral waveform patterns obtained during TCD examination. We describe the dynamic TCD spectral changes in a patient with SAH that progressed from vasospasm to diastolic flow reversal. These temporal changes observed during serial TCD examinations were well correlated with the ICP. Transcranial Doppler is a reliable, beat-to-beat, non-invasive and reproducible bedside test that can be used to monitor vasospasm and ICP in SAH. The use of TCD can be extended to other intracranial diseases that can potentially lead to an abnormally high ICP.


Neurology | 2017

Early Decompressive Hemicraniectomy for Malignant Middle Cerebral Artery Infarction: A single centre retrospective study (P4.290)

Chandra Bharatendu; Yao Feng Victor Chong; Prakash Paliwal; Hock Luen Teoh; Leonard Yeo; Raymond C Seet; Bernard P Chan; Tseng Tsai Yeo; Sein Lwin; Chou Ning; Vijay Sharma


Stroke | 2015

Abstract W P36: Timing Of Collateral Circulation In Acute Stroke And Its Effect On Predicting Outcomes

Leonard Yeo; Prakash Paliwal; Hockluen Teoh; Bernard P Chan; Raymond C Seet; Vijay Sharma


Stroke | 2015

Abstract 74: Improvement in Cerebral Hemodynamic Parameters and Outcome after Superficial Temporal Artery- Middle Cerebral Artery Bypass in Patients with Severe Steno-occlusive Disease of Intracranial Carotid and Middle Cerebral Artery

Leonard Yeo; Prakash Paliwas; Aftab Ahmad; Arvind K Sindha; Hockluen Teoh; lily Y wong; Vincent F Chong; Raymond C Seet; Bernard P Chan; Tsengtsai Yeo; Ning Chou; Vijay Sharma


Stroke | 2015

Abstract T P39: Serial Alberta Stroke Program Early Ct Score (aspects) Is A Superior Predictor Of Outcomes With Iv Rtpa

Leonard Yeo; Prakash Paliwal; Hockluen Teoh; Bernard P Chan; Raymond C Seet; Vijay Sharma


Stroke | 2014

Abstract T MP26: Role of 99tc-hmpao Spect in the Assessment of Cerebral Hemodynamic Parameters After Superficial Temporal Artery- Middle Cerebral Artery Bypass in Patients With Severe Steno-Occlusive Disease of Intracranial Carotid and Middle Cerebral Artery

Amit Batra; arvind sinha; Leonard Yeo; Rahul Rathakrishnan; Prakash Paliwal; Ning Chou; Tseng Tsai; Hock Luen Teoh; Bernard P Chan; Vincent F Chong; Vijay Sharma


Stroke | 2014

Abstract W P39: Internal Cerebral Vein Asymmetry on Follow-Up Brain CT after Intravenous Thrombolysis in Acute Anterior Circulation Ischemic Stroke is Associated With Poor Outcome

Prakash Paliwal; Leonard Yeo; Bernard P Chan; Hock Luen Teoh; Raymond C Seet; Vijay Sharma


Stroke | 2014

Abstract T P61: Patients With Acute Stroke Involving More Than One-Third Middle Cerebral Artery Territory Should Not be Excluded From Intravenous Thrombolysis

Leonard Yeo; Prakash Paliwal; Bernard P Chan; Hock Luen Teoh; Venetit H Ong; Vijay Sharma


Stroke | 2014

Abstract T MP29: Impaired Vasodilatory Reserve on Acetazolamide-Challenged 99tc-hmpao-Spect is a Strong Predictor of Stroke Recurrence in Patients With Severe Steno-Occlusive Disease of Intracranial Carotid or Middle Cerebral Artery

Prakash Paliwal; Leonard Yeo; arvind sinha; Amit Batra; Rahul Rathakrishnan; Chou Ning; Tseng Tsai; Hock Luen Teoh; Bernard P Chan; Vincent F Chong; Vijay Sharma


Stroke | 2014

Abstract W P228: Delayed Decompression Hemicraniectomy in Massive Hemispheric Infarction Reduces Mortality but Does Not Improve Functional Outcome

Amit Batra; Nivdeh dinesh; Leonard Yeo; Nabin Sakar; Ghulam Kawnayn; Tseng Tsai; Ning Chou; Liang Sai; Prakash Paliwal; Aftab Ahmad; Raymond C Seet; Bernard P Chan; Vijay Sharma; Hock Luen Teoh

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Leonard Yeo

National University of Health Sciences

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Vijay Sharma

National University of Health Sciences

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Prakash Paliwal

National University of Health Sciences

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Raymond C Seet

National University of Health Sciences

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Hock Luen Teoh

National University of Health Sciences

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Aftab Ahmad

National University of Health Sciences

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Rahul Rathakrishnan

National University of Health Sciences

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Amit Batra

National University of Health Sciences

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Jonathan Ong

National University of Health Sciences

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Vincent F Chong

National University of Health Sciences

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