Inclusion Criteria:

1. Patients over 18 years old
2. Chronic kidney disease patients with eGFR < 60 mL/min/1.73 m²
3. Patients with hyperkalemia detected in the emergency department
4. Patients willing to participate in the study and who sign the consent form

Exclusion Criteria:

1. Patients under 18 years old
2. Patients who do not wish to participate in the study
3. Patients without chronic kidney damage
4. Patients without detected hyperkalemia
5. Patients needing cardiopulmonary resuscitation due to hyperkalemia