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Status of Four Trace Elements in Elderly Patients with Online Hemodiafiltration by Misuk Ji, Eunsin Bae, Hae Won Kim, Sang-Hee Lee, Woochang Lee, Sail Chun, Youn Mi Choi, Won-Ki Min

Background: Essential trace elements play key roles in multiple biological systems, and hemodialysis patients are at risk for deficiency of essential trace elements. The aim of the study was to assess the essential element status in end stage renal disease patients undergoing online hemodiafiltration (online HDF) in outpatient dialysis clinic.
Methods: A total of 28 Korean patients with regular online HDF were included. Blood samples were collected before and after one HDF session, and serum concentrations of zinc, copper, selenium, and manganese were simulta-neously measured by inductively coupled plasma mass spectrometry.
Results: Selenium, zinc, copper deficiencies were observed in 71.4%, 35.8%, and 21.4%, compared with the reference range. No patients revealed manganese deficiency. After the HDF, the post-HDF level significantly increased in all trace elements, compared with the pre-HDF (11.2% for selenium, 10.7% for copper, and 6.6% for zinc). However, 50% patients were still deficient for selenium at the post-HDF.
Conclusions: Our data suggest that the patients undergoing online HDF are at an increased risk of trace element deficiency, especially for selenium.

DOI: 10.7754/Clin.Lab.2020.201026