Data from: The impact of serum potassium ion variability on 28-day mortality in ICU patients

Objective: Potassium ion disorders are prevalent among patients in
Intensive Care Units (ICUs), yet there is a notable deficiency in
established protocols and supplemental plans for potassium management.
This retrospective study conducted at a single center aims to explore the
relationship between potassium levels, their variability, and the 28-day
mortality rate in ICU patients. Methods: This study analyzed patients
admitted to the ICU within one year. We assessed serum potassium
variability using the coefficient of variation and categorized it into
four quartile groups (Q1, Q2, Q3, Q4). Additionally, patients were
classified into six groups based on serum potassium concentrations. The
associations between these categories and the 28-day mortality rate were
evaluated using binary logistic regression, adjusting for potential
confounders.