High blood pressure &
renal denervation

What is resistant hypertension?

Resistant hypertension means that blood pressure remains above target despite treatment with an appropriate combination of medicines. Some people also find it difficult to tolerate blood-pressure medication.

A specialist review considers how blood pressure is being measured, the medication being taken, lifestyle factors and possible underlying causes. Further blood tests, blood-pressure monitoring and scans may be needed.

What is renal denervation?

Renal denervation is a catheter procedure that treats nerves around the arteries supplying the kidneys. These nerves can contribute to high blood pressure. Treating them can lower blood pressure in selected patients, although the response varies.

It is one possible part of a treatment plan. It does not replace the need for follow-up, and blood-pressure medicines may still be required.

What does the procedure involve?

A catheter is passed through an artery in the groin to the arteries supplying the kidneys. X-rays guide the procedure, which is usually performed with local anaesthetic and sedation. Energy is delivered to affect the surrounding nerves.

Beforehand, tests check kidney function, look for other causes of high blood pressure and assess whether the kidney arteries are suitable.

Deciding whether it is suitable

The decision is made after a specialist assessment. We would discuss the likely benefit, alternatives, procedural risks and the follow-up you would need. Availability and funding should be confirmed with the clinical team.

Further reading: NICE guidance on renal denervation.

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