Risk factors for cardio-cerebrovascular events among patients undergoing continuous ambulatory peritoneal dialysis

Penglei Li1,2, Tiegang Lv1,2, Liping Xu1,2

  • 1Department of Medicine, Division of Nephrology, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China.

Renal Failure
|May 24, 2024
PubMed

Insights

Low serum magnesium levels are a significant predictor of cardio-cerebrovascular events in patients undergoing continuous ambulatory peritoneal dialysis (CAPD). Maintaining adequate serum magnesium is crucial for reducing event risk in this population.

Area of Science:

  • Nephrology
  • Cardiology
  • Biochemistry

Background:

  • Chronic kidney disease (CKD) is associated with altered mineral metabolism.
  • Patients with CKD, particularly those on dialysis, face elevated risks of cardiovascular and cerebrovascular events.
  • Serum magnesium levels are implicated in CKD patient outcomes, with levels >0.9 mmol/L linked to better survival.

Purpose of the Study:

  • To identify risk factors for cardio-cerebrovascular events in patients on continuous ambulatory peritoneal dialysis (CAPD).
  • To investigate the correlation between serum magnesium levels and these cardio-cerebrovascular events.

Main Methods:

  • Retrospective analysis of data from 189 CAPD patients.
  • Collection of sociodemographic, clinical, physiological, and biochemical data.
  • Univariate and multivariate logistic regression analyses to identify risk factors and independent predictors.
  • Correlation analysis to assess relationships between serum magnesium and other biochemical markers.

Main Results:

  • Univariate analysis identified age, CRP, RDW-SD, RDW-CV, serum albumin, potassium, sodium, chlorine, magnesium, and uric acid as risk factors.
  • Serum magnesium ≤0.8 mmol/L demonstrated the highest odds ratio (3.996) for events.
  • Multivariate analysis confirmed serum magnesium as an independent risk factor and serum uric acid (<440 μmol/L) as an independent protective factor.
  • A significant difference in event incidence was observed across serum magnesium grades (p=0.002), highest in the <0.8 mmol/L group.
  • High serum magnesium positively correlated with albumin, potassium, and uric acid, and negatively with CRP.

Conclusions:

  • Low serum magnesium levels are a significant independent predictor of cardio-cerebrovascular events in CAPD patients.
  • Serum magnesium levels below 0.8 mmol/L are associated with a substantially increased risk.
  • Maintaining optimal serum magnesium levels may be a key strategy for preventing cardio-cerebrovascular events in CAPD patients.

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