SPYRAL DYSTAL Renal Denervation Global Clinical Study

Not Recruiting

Trial ID: NCT04311086


The objective of this single arm interventional study is to determine if renal denervation performed in the distal main and first order branch renal arteries is as effective in reducing blood pressure as the procedural approach used in the SPYRAL HTN-OFF MED clinical study.

Official Title

Global Clinical Study of Renal Denervation in the Distal Main and First Order Branch Renal Arteries Using the Symplicity Spyral™ Multi-electrode Renal Denervation System (SPYRAL DYSTAL)

Stanford Investigator(s)

David Lee, MD
David Lee, MD

Professor of Medicine (Cardiovascular Medicine)


Inclusion Criteria:

- Individual has office systolic blood pressure (SBP) ≥ 150 mmHg and <180 mmHg and a
diastolic blood pressure (DBP) ≥ 90 mmHg after being off medications.

   - Individual has 24-hour Ambulatory Blood Pressure Monitoring (ABPM) average SBP ≥ 140
   mmHg and < 170 mmHg.

   - Individual is willing to discontinue current antihypertensive medications

Exclusion Criteria:

   - Individual has estimated glomerular filtration rate (eGFR) of <45.

   - Individual has type 1 diabetes mellitus or poorly-controlled type 2 diabetes mellitus.

   - Individual has one or more episodes of orthostatic hypotension.

   - Individual requires chronic oxygen support or mechanical ventilation other than
   nocturnal respiratory support for sleep apnea.

   - Individual has primary pulmonary hypertension.

   - Individual is pregnant, nursing or planning to become pregnant.

   - Individual has frequent intermittent or chronic pain that results in treatment with
   nonsteroidal anti-inflammatory drugs (NSAIDs) for two or more days per week over the
   month prior to enrollment.

   - Individual has stable or unstable angina within 3 months of enrollment, myocardial
   infarction within 3 months of enrollment; heart failure, cerebrovascular accident or
   transient ischemic attack, or atrial fibrillation at any time.

   - Individual works night shifts.


device: Renal Denervation (Symplicity Spyral™)

Not Recruiting

Contact Information

Stanford University
School of Medicine
300 Pasteur Drive
Stanford, CA 94305
David P Lee, MD