CVRx, Inc., a privately held medical device company, today announced findings from a health-economic analysis published in the Journal of Hypertension that indicates Barostim Therapy is a cost-effective treatment option for patients with drug resistant hypertension. Based on blood pressure reductions attained with Barostim therapy, the Markov model used for this analysis projected that Barostim is a cost-effective treatment for this group of patients, with an anticipated incremental cost-effectiveness ratio (ICER) of 7,797 EUR per quality adjusted life year (QALY) gained from a payer perspective in a European setting. This is significantly below the recognized European cost-effectiveness threshold of 35,000 EUR.
The Barostim System is a programmable, minimally invasive device that consists of an implantable pulse generator (IPG), a 2mm electrode, and an external programmer. Barostim Therapy is designed to trigger the natural blood pressure regulation system by electrically activating the carotid baroreceptors. Barostim neo™ is the second generation system that is commercially available in Europe. The therapy is included in the joint European Society of Hypertension and European Society of Cardiology guidelines for the treatment of resistant hypertension published in June, 2013. Barostim Therapy is also under evaluation in a pivotal clinical trial in the U.S. intended to achieve U.S. market approval.
The reduction in blood pressure with Barostim Therapy was based on the double-blinded, randomized clinical trial published in the Journal of the American College of Cardiology² and long term follow up data3,4. The study analyzed the impact of Barostim Therapy on a cohort of drug resistant hypertension patients with a systolic blood pressure > 170mmHg. Patient characteristics were based on the actual patients treated with Barostim Therapy in the randomized Barostim trial, as well as patient data from a large German epidemiological study5.
The health economic model in this study uses risk equations and cost data from the published literature to project the economic and clinical impact of Barostim Therapy for patients with drug resistant hypertension. The model in the study is a combination of a decision tree and a Markov model, and it uses established multivariate risk equations from the Framingham heart study and the SCORE project to enable a robust projection of the impact of Barostim Therapy on cardiovascular events and mortality.
The model shows that Barostim Therapy may substantially reduce debilitating and costly cardiovascular events such as stroke, end stage renal disease (ESRD), myocardial infarction (MI), coronary heart disease (CHD) and heart failure. Over a lifetime, Barostim is estimated to reduce the rate of stroke by 35%, ESRD by 23%, MI by 19%, and heart failure by 12%. Barostim was estimated to provide 1.66 additional life years and 2.17 additional quality-adjusted life years when compared with optimal medical management.
"This study provides an important perspective on the value of lowering the blood pressure for this group of drug resistant patients, clinically as well as from a health economic standpoint," said Joachim Beige, M.D, PhD, study co-author, Head KfH Renal Unit / Department of Nephrology, Hospital St. Georg, Leipzig, Germany. "Moreover the estimated reductions in end-stage events such as stroke and end stage renal disease are substantial. This illustrates the impact which the blood pressure reduction of Barostim Therapy can have."
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