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Measurement of Tissue Oxygenation Using Near-Infrared Spectroscopy in Patients Undergoing Hemodialysis
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Copeptin in Hemodialysis Patients with Left Ventricular Dysfunction.

Jae Seok Kim1, Jae Won Yang1, Moon Hee Chai1

  • 1Division of Nephrology, Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea.

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Copeptin levels are elevated in hemodialysis patients and significantly higher in those with left ventricular (LV) dysfunction. This peptide shows diagnostic value for identifying LV dysfunction in this population.

Keywords:
Copeptinhemodialysisventricular dysfunction

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Area of Science:

  • Nephrology
  • Cardiology
  • Biomarker Research

Background:

  • Copeptin is a known marker for heart disease prognosis.
  • Its role in hemodialysis patients, particularly concerning left ventricular dysfunction (LV dysfunction), remains under-investigated.

Purpose of the Study:

  • To investigate the characteristics of copeptin in hemodialysis patients.
  • To assess the utility of copeptin as a diagnostic marker for LV dysfunction in this cohort.

Main Methods:

  • Studied 41 regular hemodialysis patients.
  • Measured copeptin, NT-proBNP, body fluid volume (bioimpedance spectroscopy), and LV function (echocardiography).

Main Results:

  • Copeptin levels averaged 171.4 pg/mL pre-hemodialysis and correlated positively with body fluid volume.
  • Copeptin levels were significantly higher in patients with LV dysfunction (218.7 pg/mL) versus normal LV function (77.6 pg/mL).
  • Receiver operating characteristic analysis indicated copeptin's diagnostic value for LV dysfunction (AUC 0.737, p=0.02) with a cut-off of 125.48 pg/mL.

Conclusions:

  • Copeptin levels increase in hemodialysis patients.
  • Elevated copeptin is associated with LV dysfunction in hemodialysis patients.
  • Copeptin shows promise as a diagnostic marker for LV dysfunction in hemodialysis patients.