Methods for catheter-based renal neuromodulation
First Claim
1. In a resistant hypertensive human patient having a baseline office blood pressure of at least 160 mm Hg and on an aldosterone antagonist, a method of treating hypertension, comprising:
- intravascularly placing an energy delivery element in a renal artery of the patient; and
modulating a renal nerve along the renal artery by delivering energy from the energy delivery element to a plurality of treatment locations along a wall of the renal artery;
whereby the patient achieves a decrease in office blood pressure of (a) not less than 14 mm Hg and (b) at least 7 mm Hg more than a resistant hypertensive control group patient,wherein the control group patient has an average baseline office blood pressure of at least 160 mm Hg, is younger than 68 years of age, takes at least two or more anti-hypertensive medications at maximally tolerated doses in addition to an aldosterone antagonist, and underwent a sham procedure instead of the modulation treatment.
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Abstract
Methods for treating preventing or decreasing the likelihood of a human patient developing hypertension and associated systems and methods are disclosed herein. One aspect of the present technology, for example, is directed to methods for therapeutic renal neuromodulation that partially inhibit sympathetic neural activity in renal nerves proximate a renal blood vessel of a human patient. This reduction in sympathetic neural activity is expected to therapeutically treat one or more conditions associated with hypertension or prehypertension of the patient. Renal sympathetic nerve activity can be modulated, for example, using an intravascularly positioned catheter carrying a neuromodulation assembly, e.g., a neuromodulation assembly configured to use electrically-induced, thermally-induced, and/or chemically-induced approaches to modulate the renal nerves.
557 Citations
20 Claims
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1. In a resistant hypertensive human patient having a baseline office blood pressure of at least 160 mm Hg and on an aldosterone antagonist, a method of treating hypertension, comprising:
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intravascularly placing an energy delivery element in a renal artery of the patient; and modulating a renal nerve along the renal artery by delivering energy from the energy delivery element to a plurality of treatment locations along a wall of the renal artery; whereby the patient achieves a decrease in office blood pressure of (a) not less than 14 mm Hg and (b) at least 7 mm Hg more than a resistant hypertensive control group patient, wherein the control group patient has an average baseline office blood pressure of at least 160 mm Hg, is younger than 68 years of age, takes at least two or more anti-hypertensive medications at maximally tolerated doses in addition to an aldosterone antagonist, and underwent a sham procedure instead of the modulation treatment. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In a resistant hypertensive human patient having a baseline office blood pressure of at least 160 mm Hg and on a maximum tolerable dosage of a plurality of antihypertensive medications, one of which is an aldosterone antagonist, a method of treating hypertension, comprising:
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intravascularly placing an energy delivery element in a renal artery and adjacent to renal nerves of the patient; and ablating the renal nerves via energy from the energy delivery element at a plurality of treatment locations along the renal artery, wherein the treatment locations are spaced apart from each other by not less than 5 mm and arranged in a helical pattern around a wall of the renal artery at 45°
intervals from neighboring treatment locations,whereby ablating the renal nerves at the plurality of treatment locations causes a drop in office blood pressure of (a) not less than 14 mm Hg and (b) at least 7 mm Hg more than a resistant hypertensive control group patient, wherein the control group patient has an average baseline office blood pressure of at least 160 mm Hg, is younger than 68 years of age, takes at least two or more anti-hypertensive medications at maximally tolerated doses in addition to an aldosterone antagonist, and underwent a sham procedure instead of the ablation treatment. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. In a resistant hypertensive human patient having a baseline office blood pressure of at least 160 mm Hg, a method of reducing a nocturnal systolic blood pressure comprising:
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intravascularly placing an energy delivery element within a renal artery and adjacent to renal nerves of the patient; and ablating the renal nerves via energy from the energy delivery element at a plurality of treatment locations along the renal artery, wherein the treatment locations are spaced apart from each other by not less than 5 mm and arranged in a helical pattern around a wall of the renal artery at 45°
intervals from neighboring treatment locations,whereby ablating the renal nerves causes a decrease in ambulatory nocturnal blood pressure of at least 4 mm Hg more than a resistant hypertensive control group patient, wherein the control group patient has an average baseline office blood pressure of at least about 160 mm Hg, is younger than 68 years of age, takes at least two or more anti-hypertensive medications at maximally tolerated doses in addition to an aldosterone antagonist, and underwent a sham procedure instead of the ablation treatment. - View Dependent Claims (19, 20)
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Specification