High blood pressure controlled using deep brain stimulation
27 January 2011
Clinical researchers have discovered what may be a surgical alternative to medication in controlling persistent high blood pressure where patients do not respond to drugs.
Reporting this month in Neurology, the medical journal of the American Academy of Neurology, the team from the University of Bristol and Frenchay Hospital describes the case of a 55-year-old man who had been diagnosed with high blood pressure when he suffered a stroke.
His blood pressure had remained high despite attempts to control it using drugs.
Using a surgical implant similar to a cardiac pacemaker, the team was able to control the man's condition by sending electrical pulses to the brain, in a procedure known as deep brain stimulation.
While the electrical stimulation did not permanently alleviate his pain, researchers did find that it decreased his blood pressure enough for him to be able to stop taking the blood pressure drugs.
''This is an exciting finding as high blood pressure affects millions of people and can lead to heart attack and stroke, but for about one in 10 people, high blood pressure can't be controlled with medication or they cannot tolerate the medication,'' said study author Dr Nikunj K. Patel from the Department of Neurosurgery at Bristol's Frenchay Hospital and Senior Clinical Lecturer at the University of Bristol.
Dr Patel noted that the decrease in blood pressure was a response to the deep brain stimulation, and not a result of changes to the gentleman's other conditions.