Analysis of correlation between 24-hour urinary sodium and the degree of blood pressure control in patients with chronic kidney disease and non-chronic kidney disease

Ho Seok Koo, Yong Chul Kim, Shin Young Ahn, Se Won Oh, Suhnggwon Kim, Ho Jun Chin

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We investigated the association between 24-hr urinary sodium (24UNA) and adequacy of blood pressure (BP) control in patients with chronic kidney disease (CKD) and nonCKD. All data were collected retrospectively by accessing the electrical medical records in patients with 24-hr urine collection and serum creatinine. Enrolled 400 subjects were subgrouped by the amount of 24UNA, or CKD stage. The appropriate BP was defined as BP < 130/80 mmHg for subjects with proteinuria, and BP < 140/90 mmHg for subjects without proteinuria. The mean level of 24UNA was 166±76 mEq/day. The 24UNA group was an independently related factor to diastolic BP as a continuous variable. The rate of appropriate BP control in patients with proteinuria was highest in 24UNA < 100 mEq/L (P=0.012). The odds to fail achievement of BP target in subjects with 24UNA ≥90 mEq/day was 2.441 (1.249-4.772, P=0.009) higher than that of 24UNA < 90 mEq/day among participants with proteinuria. There was difference in the amount of 24UNA between CKD and non-CKD except each stage of CKD group. In conclusion, salt intake estimated by 24-hr urine sodium excretion is a risk factor to achieve appropriate BP control.

Original languageEnglish
Pages (from-to)S117-S122
JournalJournal of Korean Medical Science
Publication statusPublished - 2014 Jan 1
Externally publishedYes



  • Blood pressure
  • Hypertension
  • Renal insufficiency
  • Salt

ASJC Scopus subject areas

  • Medicine(all)

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