Tracking Treatment Pathways in Adult Patients With Hyperkalemia.

This study is a multinational, observational, prospective, longitudinal, cohort study that will include primary and secondary data collection. Secondary data, collected as per routine clinical practice will be extracted from electronic health records (EHR) and manually entered into the electronic case report form (eCRF). Primary data will be collected directly from patients and Health Care Providers (HCPs). Prospective data collection will be performed for a period of 12 months and will include data collection at baseline, that is, the date of enrollment, and at 3-, 6-, 9-, and 12-months following baseline. The data collection timepoints in this study is irrespective of when the patient's medical visits are scheduled. There are no study specific patient visits mandated by protocol and study may be fully virtual.

Patients meeting all the following inclusion criteria will be eligible for inclusion into the study:

• Age ≥18 years on the date of signing informed consent
• HK with serum potassium (K+) level(s) greater than 5.0 mmol/L, collected during Standard of Care, within 21 days prior to the date of enrollment*
• Provision of signed and dated informed consent

(*enrollment in study is defined as the date of Informed consent and confirmation of study eligibility, whichever occurs later).

Patients will be excluded from the study if they meet any of the following criteria:

• Concurrent participation in any trial that includes the use of K+ binders as an investigational medicinal product (IMP)
• Patients with pseudohyperkalemia
• A life expectancy of less than six months, based on physician judgement
• Acute causes of HK such as infections and/or trauma to be determined by the principal investigator
• Scheduled renal transplant
• Involvement in the planning and/or conduct of the study