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Factors associated with Hypokalemia in Continuous Ambulatory Peritoneal Dialysis Patients

Hyun-Wook Kim1, Jae Hyun Chang1, Sun Young Park1

  • 1Department of Internal Medicine, Yonsei University College of Medicine, The Institute of Kidney Disease, Yonsei University, Seoul, Korea.

Electrolyte & Blood Pressure : E & BP
|January 25, 2014
PubMed

Insights

Hypokalemia (low potassium) is common in continuous ambulatory peritoneal dialysis (CAPD) patients. Lower serum albumin and ultrafiltration volume independently predict hypokalemia, suggesting potassium is a nutritional marker in CAPD.

Area of Science:

  • Nephrology
  • Internal Medicine
  • Clinical Nutrition

Background:

  • Hypokalemia is a common complication in patients undergoing continuous ambulatory peritoneal dialysis (CAPD).
  • Multiple factors can influence potassium levels in CAPD patients, necessitating investigation into associated variables.

Purpose of the Study:

  • To identify factors associated with hypokalemia in patients on maintenance CAPD treatment.
  • To explore the relationship between serum potassium levels and nutritional markers in CAPD patients.

Main Methods:

  • A study was conducted on 68 patients undergoing maintenance CAPD for at least six months.
  • Univariate and multivariate stepwise linear regression analyses were employed to evaluate associations with hypokalemia.

Main Results:

  • Hypokalemia was associated with older age and diabetes mellitus in univariate analysis.
  • Lower serum albumin, triglyceride, body mass index, and lean body mass, along with higher C-reactive protein, were observed in hypokalemic patients.
  • Serum albumin level and ultrafiltration volume during the peritoneal equilibration test were identified as independent predictors of hypokalemia.

Conclusions:

  • Serum albumin and ultrafiltration volume are significant independent factors associated with hypokalemia in CAPD patients.
  • Serum potassium levels may serve as a crucial nutritional marker in this patient population.
  • Further longitudinal studies are warranted to elucidate the precise relationship between serum potassium and nutritional status in CAPD.

Keywords:
Continuous ambulatory peritoneal dialysisHypokalemiaNutritional statusPotassium

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