A University of Leicester-led study may have uncovered the reason why Beta-blockers are less effective at preventing stroke in older people with high blood pressure, when compared to other drugs for high blood pressure.
The research, carried out by Bryan Williams, Professor of Medicine at the University of Leicester, and his colleague Dr. Peter Lacy, has been published in the prestigious Journal of the American College of Cardiology and has been cited on the MDLinx.com site as currently the world's number one leading finding in its field.
Professor Williams' research shows that lowering heart rate in older people, as Beta blockers do, can have a potentially detrimental effect on central aortic pressures (pressures in the large arteries close to the heart).
He commented: "Such findings can help define the template for optimal treatment strategies and highlight why new methods to estimate central aortic pressures are providing new insights into the pathogenesis of cardiovascular disease and how new drugs can be tailored to limit the damage.
"Leicester is acknowledged as one of the leading centres in the world in this field of research."
This study used analysis of the pulse wave measured at the wrist to estimate pressures in the large artery near to the heart, in people with high blood pressure. It shows that reducing heart rate in older people with high blood pressure can result in a higher than expected pressure in the large arteries.
This may be the reason why drugs such as Beta-blockers, a widely used drug to treat high blood pressure, have been shown to be less effective than other treatments at preventing stroke. In 2006, NICE recommended that Beta-blockers should no longer be used as a routine treatment for high blood pressure because they appeared somewhat less effective than other types of blood pressure lowering drugs at reducing the risk of stroke, especially in older people.
|Contact: Bryan Williams|
University of Leicester