High blood pressure, also known as hypertension, is one of the most common health problems in the world.
It often develops without obvious symptoms, but over time it can quietly damage blood vessels and increase the risk of heart attack, stroke, kidney disease, and heart failure.
Although healthy eating, regular exercise, and medicines help many people control their blood pressure, some patients continue to have high readings despite treatment.
For people whose blood pressure remains too high, doctors have been searching for new ways to lower the risk of serious health problems.
One promising option is a procedure called renal denervation, or RDN. Recent research suggests this treatment may provide extra help for people whose blood pressure is difficult to control with medicines alone.
The latest findings come from the Radiance II clinical trial, which was published in the medical journal JAMA.
Researchers wanted to find out whether renal denervation could safely lower blood pressure in people who had not responded well to standard treatment. The results add to growing evidence that this procedure could become an important option for selected patients.
Renal denervation is a minimally invasive procedure that targets nerves surrounding the arteries leading to the kidneys. These nerves play an important role in controlling blood pressure. When they become overactive, they can cause blood pressure to stay higher than normal.
During the procedure, doctors insert a thin tube called a catheter through a small opening in the wrist or groin. The catheter is guided to the kidney arteries, where heat or sound-wave energy is used to reduce the activity of the surrounding nerves. After both kidneys have been treated, the catheter is removed, and most patients recover quickly because no major surgery is required.
The Radiance II study included 224 adults with high blood pressure. After undergoing renal denervation, many participants experienced meaningful reductions in their blood pressure, and the improvement lasted for at least two months. According to study author Dr. Stephen Jenkins from Ochsner Health, the procedure may offer a valuable new treatment choice for patients who have not achieved good blood pressure control in other ways.
This is not the first study to show positive results. Two earlier clinical trials also found that renal denervation lowered blood pressure. Together, the three studies have now included more than 500 participants with mild, moderate, and severe hypertension, strengthening confidence that the treatment can work across different groups of patients.
The procedure offers several possible advantages. Because it is minimally invasive, recovery is generally faster than with traditional surgery. It is also designed to be used alongside blood pressure medicines rather than replace them, giving doctors another tool to help patients reach healthier blood pressure levels.
Researchers say more studies are still needed to understand how well the benefits last over many years and to continue monitoring safety. Even so, the current evidence is encouraging. As high blood pressure remains a leading cause of illness and death worldwide, renal denervation could become an important addition to future treatment options for people whose condition is difficult to control.
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