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Ranolazine improves autonomic balance in heart failure when added to guideline-driven therapy

Published Online: August 16th 2018 Heart International. 2014;9(2):59-65
Authors: Gary L. Murray, Joseph Colombo
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Overview

Background. The effect of ranolazine (RAN) on cardiac autonomic balance in congestive heart failure (CHF) was studied. Methods. Fifty-four CHF patients were randomized to (1) open-label RAN (RANCHF) added to usual therapy vs. (2) usual therapy (NORANCHF). Parasympathetic and sympathetic (P&S) measurements were taken at baseline and at 12 months. Results. A total of 16/27 (59%) patients in both groups had initially abnormal P&S measures, including high sympathovagal balance (SB), cardiovascular autonomic neuropathy (CAN) or both. High SB normalized in 10/12 (83%) RANCHF patients vs. 2/11 (18%) NORANCHF patients. SB became high in 5/11 (45%) NORANCHF vs. 1/11 (9%) RANCHF patients. CAN improved in 4/6 (67%) RANCHF patients vs. 5/7 (45%) NORANCHF patients. CAN developed in 1/11 (9%) RANCHF vs. 4/11 (36%) NORANCHF patients. Since improved P&S in RANCHF patients seemed independent of improved brain natriuretic peptide and impedance cardiography (BioZ) measurements, 5 day RAN was given to 30 subjects without CHF but with high SB or CAN. P&S improved in 90% of these subjects. Conclusions. RAN improves unfavorable P&S activity in CHF possibly by a direct effect upon autonomic sodium channels.

Keywords

Cardiovascular autonomic neuropathy, Congestive heart failure, Major adverse cardiac events, Parasympathetic function, Patient outcomes, Ranolazine, Sympathetic function

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Disclosure

Financial support: No grants or funding have been received for this
study.

Correspondence

Gary L. Murray Director, The Heart and Vascular Institute 7205 Wolf River Blvd Germantown TN, 38138, USA drglmurray@hotmail.com

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