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Improved Home Blood Pressure Control by CT-guided Ozone-mediated Renal Denervation for Patients with Resistant Hypertension
Published on: June 6, 2025
[When blood pressure control is a problem. Refractory hypertension is rare]
1Med. Klinik, Krankenanstalten Gilead, Akadem. Lehrkrankenhaus der Westfälischen Wilhelms-Univ. Münster, Bielefeld. Offers@medklinik.gilead.de
Insights
Refractory hypertension is diagnosed when three different medications fail to control blood pressure. Differentiating true refractory cases from pseudo-refractory hypertension is crucial for effective treatment.
Area of Science:
- Cardiology
- Pharmacology
Context:
- Hypertension management presents challenges, particularly with treatment-resistant cases.
- Refractory hypertension affects an estimated 2-5% of hypertensive patients.
- Distinguishing true refractory hypertension from pseudo-refractory forms is essential for appropriate patient care.
Purpose:
- To define refractory hypertension and outline diagnostic and therapeutic considerations.
- To differentiate true refractory hypertension from pseudo-refractory hypertension.
- To guide management strategies for patients with difficult-to-control high blood pressure.
Summary:
- Refractory hypertension is defined as blood pressure remaining above 140/90 mmHg despite maximal doses of three different antihypertensive agents, including a diuretic, sympathetic blocker, and vasodilator.
- Pseudo-refractory hypertension can result from various factors, including inadequate therapy, drug interactions, or secondary causes.
- Management involves optimizing diuretic therapy, maximizing antihypertensive doses, and considering additional agents like minoxidil in combination therapy.
Impact:
- Improved diagnostic accuracy for refractory hypertension.
- Enhanced therapeutic strategies for patients with resistant high blood pressure.
- Reduced cardiovascular risk in a challenging patient population.
Abstract:
Hypertension is considered refractory when the use of three pharmacologically different antihypertensives (included a diuretic, a sympathetic blocker and a vasodilator) given at maximum dose fails to lower the blood pressure to below 140/90 mmHg. In the event of isolated systolic hypertension, the value should be reduced to below 140 mmHg. A truly refractory form may be assumed in some 2-5% of all hypertensives, and must be differentiated from a pseudo form in which such factors as counter-regulatory mechanisms, inadequate use of general measures, inadequate antihypertensive therapy, interactions with other drugs, or secondary hypertension may play a role. Refractory patients in whom the underlying cause cannot be identified should be referred to an appropriate specialist. Diuretic treatment should first be optimized and antihypertensive doses maximized (with consideration being given to side effects). Further substances such as minoxidil in combination with a beta-blocker and a diuretic may be used.
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