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Serum potassium concentrations in trauma patients
V W Vanek1, R M Seballos, D Chong
1Department of Surgery, St. Elizabeth Hospital Medical Center, Youngstown, Ohio 44501.
Southern Medical Journal
|January 1, 1994
Summary
Hypokalemia, low serum potassium, is common in trauma patients. Potassium levels typically drop within an hour and normalize within 24 hours, influenced by age, blood pressure, cardiac injury, and epinephrine levels.
Area of Science:
- Trauma critical care
- Clinical biochemistry
- Emergency medicine
Background:
- Hypokalemia is a frequent complication in trauma patients, affecting 50% to 68%.
- Understanding the dynamics of serum potassium is crucial for effective patient management.
Purpose of the Study:
- To investigate the pathophysiology of serum potassium changes in trauma patients.
- To identify factors associated with hypokalemia in this population.
Main Methods:
- Prospective study of 133 trauma patients.
- Analysis of serum potassium levels over time.
- Bivariate and multiple regression analysis to identify associated variables.
Main Results:
- Serum potassium typically decreased within 1 hour and normalized within 24 hours in hypokalemic patients.
- Admission serum potassium was associated with age, systolic blood pressure, cardiac injury, and epinephrine levels.
- Multiple regression identified age, arterial pH, and serum epinephrine as significant independent predictors.
Conclusions:
- Hypokalemia in trauma patients exhibits a rapid onset and resolution pattern.
- Age, arterial pH, and serum epinephrine are key determinants of initial serum potassium levels in trauma.