Search
What are you looking for?
Start main content

Press Releases

Press Releases

https://www.med.cuhk.edu.hk/press-releases/cuhk-proves-external-counterpulsation-helps-augment-cerebral-blood-flow-among-ischemic-stroke-patients
https://www.med.cuhk.edu.hk/press-releases/cuhk-proves-external-counterpulsation-helps-augment-cerebral-blood-flow-among-ischemic-stroke-patients

CUHK Proves External Counterpulsation Helps Augment Cerebral Blood Flow among Ischemic Stroke Patients

In Hong Kong, there are about 25,000 new stroke cases with over 3,000 deaths per year. Eighty percent of stroke is caused by blockages in blood vessels which diminish cerebral blood flow and leads to death of brain cells. The S.H. Ho Cardiovascular Disease and Stroke Centre at The Chinese University of Hong Kong (CUHK) pioneers in using three types of non-invasive equipment simultaneously, including transcranial blood flow monitor, continuous heart function monitor and external counterpulsation machine, to prove that external counterpulsation (ECP) is able to elevate blood pressure, enhance cardiac output and augment cerebral blood flow, thereby speeding up the recovery of stroke patients.

 

After a stroke incident, auto-regulation of one's cerebral blood flow will fail. ECP is a non-invasive treatment with six air cuffs wrapped around the patient's hip, thighs and calves. The cuffs are timed to inflate and deflate based on the individual's electrocardiogram. While the heart is relaxing, the cuffs inflate to compress the blood vessels in the lower limbs and aorta so as to increase blood flow to the heart. When the heart pumps again, the cuffs deflate and pressure is released instantaneously which enables blood flow into the coronary arteries and vital organs like brain and kidneys, as well as improving the heart function.

 

(From Left): Professor Thomas Wai Hong LEUNG, Associate Professor, Division of Neurology, Department of Medicine and Therapeutics; and Professor Lawrence Ka Sing WONG, Mok Hing Yiu Professor of Medicine, Head of Division, Division of Neurology, Department of Medicine and Therapeutics, CUHK, jointly present their recent research on how external counterpulsation helps improving cerebral blood flow among ischemic stroke patients

(From Left): Professor Thomas Wai Hong LEUNG, Associate Professor, Division of Neurology, Department of Medicine and Therapeutics; and Professor Lawrence Ka Sing WONG, Mok Hing Yiu Professor of Medicine, Head of Division, Division of Neurology, Department of Medicine and Therapeutics, CUHK, jointly present their recent research on how external counterpulsation helps improving cerebral blood flow among ischemic stroke patients.

A research team led by Professor Lawrence Ka Sing WONG, Mok Hing Yiu Professor of Medicine, Head of Division, Division of Neurology, Department of Medicine and Therapeutics at CUHK, conducted a study from September 2009 to December 2010 to measure the effect of ECP on cerebral flow. Thirty-two stroke patients (mean age is 68 years old) with moderate disability were recruited in this study and the mean interval of stroke onset to examination was 6 days. The patients were given nine minutes of cerebral blood flow check and underwent 35 one-hour daily ECP treatment sessions. The study revealed that ECP has raised the blood pressure by 13%; heart function has been increased by 74%; peripheral resistance has been reduced by 39%; and blood flow to the affected side of the brain has been enhanced by 9%. On the unaffected side of the brain, the blood flow was also enhanced by 9%. In the control group of 20 healthy subjects, the effects on blood pressure was raised by 9% and heart function was increased by 67%. The peripheral resistance among these elderly people was reduced by 30% with no enhancement of blood flow to the brain.

 

CUHK's study confirmed that external counterpulsation improves blood flow to brain and collateral circulation, thereby speeding up recovery of stroke patients. The results of this study have been published in the September issue of the American journal STROKE.

More Press Releases

CUHK Sees Atrial Fibrillation-related Stroke Cases 3 Times Higher Over 15 Years

CUHK Sees Atrial Fibrillation-related Stroke Cases 3 Times Higher Over 15 Years

Research
CUHK Professor Receives World Honour For Stroke Services Pioneering an Innovative 3-in-1 Multi-Target Therapy to Repair Damaged Brain After Stroke and Enhance Functional Recovery

CUHK Professor Receives World Honour For Stroke Services Pioneering an Innovative 3-in-1 Multi-Target Therapy to Repair Damaged Brain After Stroke and Enhance Functional Recovery

Awards and honors
CUHK Jointly Discovers New Therapeutic Solution for Minor Stroke in Global Study with over 30 Countries

CUHK Jointly Discovers New Therapeutic Solution for Minor Stroke in Global Study with over 30 Countries

Research
CUHK Sees Early Evaluation of TIA Patients Reduce Rate of Stroke by 70% in a Global Study of 21 Countries

CUHK Sees Early Evaluation of TIA Patients Reduce Rate of Stroke by 70% in a Global Study of 21 Countries

Research
CUHK Screening Reveals 1 in 3 Older Adults in Community Suffer Brain Small Vessel Disease, Early Prevention Recommended

CUHK Screening Reveals 1 in 3 Older Adults in Community Suffer Brain Small Vessel Disease, Early Prevention Recommended

Clinical service
CUHK Advocates Stringent Control of Cardiovascular Risks for Reopening of Narrowed Brain Arteries - A New Paradigm to Prevent Recurrent Stroke (Available in Chinese only)

CUHK Advocates Stringent Control of Cardiovascular Risks for Reopening of Narrowed Brain Arteries - A New Paradigm to Prevent Recurrent Stroke (Available in Chinese only)

Research
CUHK and PolyU Jointly Introduce TeleStroke for 24-hour Thrombolysis Service at Prince of Wales Hospital

CUHK and PolyU Jointly Introduce TeleStroke for 24-hour Thrombolysis Service at Prince of Wales Hospital

Clinical service
Good News for Asian Patients First Local Clinical Study Shows High Success Rate and Effectiveness of Stenting for Intracranial Stenosis in Preventing Ischaemic Stroke

Good News for Asian Patients First Local Clinical Study Shows High Success Rate and Effectiveness of Stenting for Intracranial Stenosis in Preventing Ischaemic Stroke

Research
CUHK Launches a Population-based Programme to Evaluate and Track Brain Health Status  of 5,000 Hong Kong Residents for Free

CUHK Launches a Population-based Programme to Evaluate and Track Brain Health Status of 5,000 Hong Kong Residents for Free

Research
Radiotherapy to Head and Neck Raises Risk for Stroke CUHK Proved Effectiveness of Carotid Angioplasty and Stenting

Radiotherapy to Head and Neck Raises Risk for Stroke CUHK Proved Effectiveness of Carotid Angioplasty and Stenting

Research
CUHK Research Reveals that Stroke Triggers Alzheimer’s Dementia Risk of Alzheimer’s Dementia Can be Reduced by Enhancing Vascular Health

CUHK Research Reveals that Stroke Triggers Alzheimer’s Dementia Risk of Alzheimer’s Dementia Can be Reduced by Enhancing Vascular Health

Research
CUHK New Research Reveals Better Efficacy of New Oral Anticoagulant for Stroke Prevention in Asian Patients with Atrial Fibrillation

CUHK New Research Reveals Better Efficacy of New Oral Anticoagulant for Stroke Prevention in Asian Patients with Atrial Fibrillation

Research
CUHK Announces Latest Medical Treatment for Minor Stroke

CUHK Announces Latest Medical Treatment for Minor Stroke

Research
CUHK Proves the Potent Efficacy of Stenting for Carotid Artery Narrowing and Cardiac Contractility Modulation for Heart Failure

CUHK Proves the Potent Efficacy of Stenting for Carotid Artery Narrowing and Cardiac Contractility Modulation for Heart Failure

Research
Most Deaths from COVID-19 in Hong Kong are of 60 Years Old or Above CUHK Initiated International Effort in Devising Strategies to Protect Older People with Dementia amid COVID-19 Pandemic

Most Deaths from COVID-19 in Hong Kong are of 60 Years Old or Above CUHK Initiated International Effort in Devising Strategies to Protect Older People with Dementia amid COVID-19 Pandemic

Research
CUHK Establishes Margaret K.L. Cheung Research Centre for Management of Parkinsonism  To Develop Innovative Solutions to Slow Disease Progression

CUHK Establishes Margaret K.L. Cheung Research Centre for Management of Parkinsonism To Develop Innovative Solutions to Slow Disease Progression

Research
CUHK Conducts World’s First Family Study on Rapid Eye Movement Sleep Behaviour Disorder to Investigate Familial Link with Parkinson’s Disease

CUHK Conducts World’s First Family Study on Rapid Eye Movement Sleep Behaviour Disorder to Investigate Familial Link with Parkinson’s Disease

Research
CUHK Pioneers in Developing Standardised Tests for Screening Cognitive Impairment in the Ageing Population in Hong Kong

CUHK Pioneers in Developing Standardised Tests for Screening Cognitive Impairment in the Ageing Population in Hong Kong

Clinical service
Two CUHK Research Projects Receive State Science and Technology Awards

Two CUHK Research Projects Receive State Science and Technology Awards

Awards and honors
CUHK Launches World’s First Study Utilizing Retinal Imaging for Alzheimer’s Disease Screening in Chinese Population

CUHK Launches World’s First Study Utilizing Retinal Imaging for Alzheimer’s Disease Screening in Chinese Population

Research
CUHK’s Gerald Choa Neuroscience Centre Unveils Mystery of How Brain Learns Motor Skills

CUHK’s Gerald Choa Neuroscience Centre Unveils Mystery of How Brain Learns Motor Skills

Research
CUHK Opens Therese Pei Fong Chow Research Centre for Prevention of Dementia and Establishes a One-stop Online Platform to Provide Information on Dementia

CUHK Opens Therese Pei Fong Chow Research Centre for Prevention of Dementia and Establishes a One-stop Online Platform to Provide Information on Dementia

Research
CUHK Sets up the Global First Research Registry on Early Onset Dementia in Chinese Population

CUHK Sets up the Global First Research Registry on Early Onset Dementia in Chinese Population

Research
CUHK Introduces High Frequency Oscillations to Determine Resection Margin Increases the Effectiveness of Complex Epilepsy Surgery by around 30%

CUHK Introduces High Frequency Oscillations to Determine Resection Margin Increases the Effectiveness of Complex Epilepsy Surgery by around 30%

Surgical advancement
Joint Study by CUHK and HKSH Reveals Patients with Comorbid REM Sleep Behavior Disorder and Depression may Suffer from Early-stage Neurodegeneration

Joint Study by CUHK and HKSH Reveals Patients with Comorbid REM Sleep Behavior Disorder and Depression may Suffer from Early-stage Neurodegeneration

Research
CUHK Advocates Atrial Fibrillation Screening and Drug Education to Reduce Risk of Stroke among Elderly

CUHK Advocates Atrial Fibrillation Screening and Drug Education to Reduce Risk of Stroke among Elderly

Clinical service
Hong Kong’s First Scientist Awarded Runner-up for the 2014 Eppendorf and Science Prize for Neurobiology CUHK Medical Student Dedicated to Unraveling Mystery of Neuronal Circuits

Hong Kong’s First Scientist Awarded Runner-up for the 2014 Eppendorf and Science Prize for Neurobiology CUHK Medical Student Dedicated to Unraveling Mystery of Neuronal Circuits

Awards and honors
Dr. Lui Che Woo Distinguished Professor Public Lecture by Prof. Steven C. Cramer on Brain Repair after Stroke

Dr. Lui Che Woo Distinguished Professor Public Lecture by Prof. Steven C. Cramer on Brain Repair after Stroke

Education
CUHK Develops an Automatic Retinal Image Analysis System to Help Diabetes Patients and Elderly Prevent Stroke

CUHK Develops an Automatic Retinal Image Analysis System to Help Diabetes Patients and Elderly Prevent Stroke

Research
Three CUHK Scholars Named Croucher Senior Research Fellow 2011-12

Three CUHK Scholars Named Croucher Senior Research Fellow 2011-12

Awards and honors

Our Expert List

Many experts under the Faculty of Medicine are available for media interview.
Please click here for the expert list or contact us.