This observational study will assess the long-term effectiveness of the RDN procedure for lowering blood pressure in Medicare patients with uncontrolled hypertension. This research will be conducted using de-identified electronic health records (EHR) and administrative health insurance claims data. Patients are enrolled through the submission of claims or encounter data to CMS.

The SPYRAL CARE study is an observational, non-interventional study of the Medicare population with uncontrolled hypertension treated with either the Symplicity RDN system plus standard of care (SOC) or with SOC alone. SOC reflects active management of hypertension. The study will evaluate real-world clinical outcomes by examining deidentified, longitudinal data from administrative health insurance claims linked with EHR. The primary objective is to assess the change in office systolic blood pressure at two years for patients treated with Symplicity RDN plus SOC compared to similar patients receiving SOC alone. The secondary objective is to describe major adverse cardiac events over a two-year period in both groups. The study analysis is subject to a central Institutional Review Board (IRB) review. However, individual hospitals are not engaged in research, and local IRB oversight is not necessary.

Inclusion Criteria:

• Enrolled in a Medicare plan
• Diagnosis of uncontrolled hypertension
• On a stable regimen of antihypertensive therapy

Exclusion Criteria:

• A prior RDN procedure
• Diagnosis of secondary hypertension
• Any condition for which RDN is contraindicated

The study population will consist of patients enrolled in Medicare treated with RDN or on stable antihypertension management in any US location.