Abstract
Purpose of Review
To explore the prevalence, treatment particularities, and research agenda in the management of resistant hypertension among patients with chronic kidney disease (CKD).
Recent Findings
The prevalence of resistant hypertension is reported to be 2–3 times higher in patients with CKD than in the general hypertensive population. Based in part on the results of the PATHWAY-2 trial showing add-on spironolactone to be superior to placebo or active treatment with an α- or β-blocker in reducing BP, international guidelines recommend the use of spironolactone as fourth-line agent in pharmacotherapy of resistant hypertension. Despite the several-fold higher burden of resistant hypertension among patients with stage 3b–4 CKD, the use of spironolactone in this population has been restricted, mainly due to the risk of hyperkalemia. The recently reported AMBER trial showed that among patients with uncontrolled resistant hypertension and an estimated glomerular filtration rate of 25–45 ml/min/1.73m2, the newer potassium-binder patiromer prevented the development of hyperkalemia and increased the proportion of participants who remained on add-on spironolactone over 12 weeks of follow-up. Administration of spironolactone was associated with a clinically meaningful reduction of 11–12 mmHg in unattended automated office systolic blood pressure (BP) over the course of the AMBER trial.
Summary
Newer potassium-binding therapies overcome the barrier of hyperkalemia and facilitate the persistent use of spironolactone, which is an effective add-on therapy to control BP in patients with resistant hypertension and advanced CKD. Future trials are now warranted to explore whether this strategy confers benefits on “hard” clinical outcomes in this high-risk population.
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RA is supported by NIH 5 R01 HL126903-02 and a grant from VA Merit Review 5I01CX000829-04.
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Review concept and design: both authors.
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Drafting of the initial version of the manuscript: PIG.
Critical revision of the manuscript for important intellectual content: RA.
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RA has the following disclosures outside the focus of this article: Member data safety monitoring committees: Astra Zeneca, Ironwood Pharmaceuticals. Member steering committees of randomized trials: Akebia, Bayer, Janssen, Glaxo Smith Cline, Relypsa, Sanofi and Genzyme US Companies; Member adjudication committees: Bayer, Boehringer Ingelheim, Janssen; Member scientific advisory board or consultant: Celgene, Daiichi Sankyo, Inc., Eli Lilly, Relypsa, Reata, Takeda Pharmaceuticals, USA, ZS Pharma.
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Georgianos, P.I., Agarwal, R. Resistant Hypertension in Chronic Kidney Disease (CKD): Prevalence, Treatment Particularities, and Research Agenda. Curr Hypertens Rep 22, 84 (2020). https://doi.org/10.1007/s11906-020-01081-x
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DOI: https://doi.org/10.1007/s11906-020-01081-x