Background: Patiromer (PAT) is a sodium-free, non-absorbed potassium (K+) binder (KB) approved for the treatment of hyperkalemia (HK). HK is common in older pts with cardiorenal comorbidities and often leads to increased Healthcare Resource Utilization (HRU). Here we aim to describe electrolyte-related HRU in Veterans with HK who initiated PAT or discontinued RAAS inhibitor (RAASi DC) therapy and were not receiving a KB (1/1/2016−8/30/2018).

Methods: Using retrospective, observational data, pts utilizing the hospital or ED during the 6 months (mos) prior to the index date were assessed at 1, 3, and 6 mos post-index. The index date was the date of PAT initiation or the date of RAASi DC in pts not receiving a KB (RAASi DC/no KB). All pts had a baseline serum K+ ≥5.1mEq/L and HF, DM, or non-dialysis CKD. Pts with continuous exposure (CE) to PAT and those who did not restart RAASi were analyzed.

Results: 288 and 26,543 pts were included in the PAT and RAASi DC/no KB groups, respectively. Following CE to PAT at 1, 3, and 6 mos post-index, no electrolyte related ED or hospital utilization was observed. In the RAASi DC group, 2-5% of pts reutilized the ED or hospital within 6 mos (Figure).

Conclusion: Of the pts who experienced an electrolyte-related hospitalization or ED visit within the 6 mos prior to PAT dispensing, no pts reutilized these services in the following 6 mos. Given the limited number of PAT users, additional investigation is warranted.


C.P. Kovesdy: Consultant; Self; Amgen, AstraZeneca, Bayer AG, Cara Therapeutics, Reata, Takeda Pharmaceutical Company Limited, Tricida. E. Gosmanova: None. S.D. Woods: Employee; Self; Relypsa, Inc. Stock/Shareholder; Self; Vifor Pharma Group. J.J. Fogli: Employee; Self; Relypsa, Inc. Stock/Shareholder; Self; Vifor Pharma Group. C.G. Rowan: Consultant; Self; AbbVie Inc., Covidia, Halozyme, Keryx, Relypsa, Inc., Vifor Pharma Group. Other Relationship; Self; COHRDATA. J.L. Hansen: Research Support; Self; COHRDATA. B.C. Sauer: Research Support; Self; COHRDATA.


Relypsa, Inc.

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