Urinary Excretion of Sodium and Potassium in a Screened Cohort in Okinawa, Japan.
- 1 January 2002
- journal article
- Published by Japanese Society of Hypertension in Hypertension Research
- Vol. 25 (5), 731-736
- https://doi.org/10.1291/hypres.25.731
Abstract
Information regarding daily intake of sodium (Na) is useful for both normotensive and hypertensive subjects. We measured urinary excretion of sodium (U-Na) and urinary excretion of potassium (U-K) to estimate daily salt intake in a cohort of health screening subjects in Okinawa, Japan. Urine samples were obtained from 2,411 subjects (1,554 men and 857 women) who were examined on a half-day dry-doc at the Okinawa General Health Maintenance Association (OGHMA). Four hundred and one subjects were examined twice, once between September and November in 1997, and once between September and November in 1998. The mean U-Na was 182 mEq/day for men and 176 mEq/day for women. The mean U-K was 54 mEq/day for men and 50 mEq/day for women. U-Na was higher in young men, and U-K was lower in young women. In both men and women, smokers had a significantly lower Na excretion compared to nonsmokers. Subjects treated for hypertension had a significantly lower Na excretion (173 mEq/day) compared to subjects not treated for hypertension (192 mEq/day). Our findings suggest that Na excretion in screened subjects in Okinawa is lower than the national average. Sodium excretion, however, was higher in young men than in elderly subjects, and K excretion was lower in young women than in elderly subjects. Both trends are disadvantageous for controlling hypertension.Keywords
This publication has 19 references indexed in Scilit:
- Evidence for high incidence of end-stage renal disease in patients after stroke and acute myocardial infarction at age 60 or youngerAmerican Journal of Kidney Diseases, 2001
- Family History of Hypertension and Blood Pressure in a Screened Cohort.Hypertension Research, 2001
- Multiple risk factor clustering of hypertension in a screened cohortJournal Of Hypertension, 2000
- Comparison of the effect of blood pressure on the development of stroke, acute myocardial infarction, and end-stage renal disease.Hypertension Research, 2000
- Effects of potassium supplementation on office, home, and 24-h blood pressure in patients with essential hypertension☆American Journal of Hypertension, 1998
- Reduction in Blood Pressure with a Sodium-Reduced, Potassium- and Magnesium-Enriched Mineral Salt in Subjects with Mild Essential Hypertension.Hypertension Research, 1998
- Effects of oral potassium on blood pressure. Meta-analysis of randomized controlled clinical trialsJAMA, 1997
- A SIMPLE METHOD FOR ESTIMATING 24 H URINARY SODIUM AND POTASSIUM EXCRETION FROM SECOND MORNING VOIDING URINE SPECIMEN IN ADULTSClinical and Experimental Pharmacology and Physiology, 1993
- Intersalt: an international study of electrolyte excretion and blood pressure. Results for 24 hour urinary sodium and potassium excretion. Intersalt Cooperative Research Group.BMJ, 1988
- Interrelationships between blood pressure, sodium, potassium, serum cholesterol, and protein intake in Japanese.Hypertension, 1984