A simple method for measuring 24-hour urinary excretions of salt and potassium.

Takemori, Koichi; Nihira, Susumu; Mikami, Seiji; Sasaki, Naosuke

doi:10.1265/jjh.43.1036

Cited by 2 publications

(5 citation statements)

References 5 publications

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“…The simple method is based on the data as follows : the ratios of sodium/ creatinine and potassium/creatinine in any five fractions in a discharge significantly correlated with the ratio of combined urine of the fractions (r= 0.983-0.999, p <0.01) ) ; the ratios of sodium/creatinine and potassium/creatinine in the solution extracted from a day's filter paper strips absorbed in each strip a suitable, non-fixed volume of urine significantly correlated with the ratios of the 24-hr control (r=0.955 for sodium/creatinine and r= 0.938 for potassium/creatinine) (Takemori et al 1988) ; Kawasaki et al (1986) reported the equations to predict 24-hr urinary creatinine excretion from sex, age, height and weight as quoted in the methods, and the correlation coefficient between the predicted creatinine and 24-hr control creatinine obtained from 17 subjects (7 males and 10 females, between 28 and 65 years of age) for 15 through 24 days was 0.955 (p <0.0001, Y = 0.99X + 1.43) ; the correlation coefficients between the simple method described in the methods (obtained by multiplying the ratios of sodium/creatinine and potassium/creatinine in the solution extracted from a day's filter paper strips by 24-hr creatinine excretion predicted from the equations of Kawasaki et al) and the 24-hr control ranged from 0.872 (p <0.05) to 0.951 (p <0.01) for sodium, from 0.557 (p >0.05). to 0.898 (p <0.01) for potassium (further improvement was necessary for the determination of potassium) (Takemori et al 1988).…”

Section: Discussionmentioning

confidence: 93%

“…to 0.898 (p <0.01) for potassium (further improvement was necessary for the determination of potassium) (Takemori et al 1988).…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, we devised a simple method (Takemori et al 1988) using a filter paper method (Takemori 1980a). …”

Section: Discussionmentioning

confidence: 99%

“…The simple method has been fully described elsewhere (Takemori et al 1988). In brief, the subjects carried eight pieces of filter paper strip per man-day for collecting urine samples in field survey.…”

Section: Methodsmentioning

confidence: 99%

“…A single 24-hr measurement of urinary sodium excretion was of no value in assessing mean sodium intake accurately (Liu et al 1979 ;Joossens et al 1980 ; Luft et al 1982) ; instead, six (Langford and Watson 1975), seven (Cooper et al 1980), seven to fourteen (Liu et al 1979), nine (Luft et al 1982) or twenty (Takemori and Mikami 1989) 24-hr collections are necessary. Previously, we reported a simple method for measuring 24-hr urinary excretions of salt and potassium in field surveys (Takemori et al 1988). In this report, by using the simple method, we evaluated changes in individual salt excretion as a result of the health education program.…”

Section: Research Council Dietary Salt Study Management Committee 198mentioning

confidence: 99%

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Evaluation of the individual effects of a health education program for sodium restriction by a simple method for measuring 24-hour urinary sodium excretion.

Takemori

Nihira

Mikami

et al. 1990

Tohoku J. Exp. Med.

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A simple method for measuring 24-hr urinary sodium excretion was applied to the evaluation of the individual effects of a health education program for sodium restriction in a rural community in Japan. Eighteen subjects (6 males and 12 females) between 35 and 72 years of age were advised to reduce their sodium intake. Twentyfour-hour urinary sodium, potassium excretion, and sodium/potassium ratio were measured using the simple method for seven consecutive days in three periods which were before the sodium restriction, 6 months after the sodium restriction, and 6 months after the end of the program. Mean sodium excretion of 18 subjects significantly decreased (p <0.05) after the end of the program. The reduced level was maintained until six months after the end of the program. Within individual cases, sodium excretion decreased significantly in subjects who had levels higher than 170 mmol at the initial stage. The reduced levels of sodium excretion were maintained until six months after the end of the program except for one subject. The subjects who had an initial level lower than 170 mmol of sodium, which is the upper limit of present recommendation for Japanese adults, did not change their levels, sodium ; potassium ; urinary excretion ; intervention ; epidemiologic methods Epidemiological (Kesteloot et al. 1987; Intersalt Cooperative Research Group 1988;) and experimental studies (Dahl et al. 1972) have suggested that excessive sodium intake is associated with elevated blood pressure. Recent studies suggest that dietary intervention trials in individuals are effective in lowering blood pressure in hypertensive patients (Beard et al.

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Section: Discussionmentioning

confidence: 93%

“…to 0.898 (p <0.01) for potassium (further improvement was necessary for the determination of potassium) (Takemori et al 1988).…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, we devised a simple method (Takemori et al 1988) using a filter paper method (Takemori 1980a). …”

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Research Council Dietary Salt Study Management Committee 198mentioning

confidence: 99%

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Evaluation of the individual effects of a health education program for sodium restriction by a simple method for measuring 24-hour urinary sodium excretion.

Takemori

Nihira

Mikami

et al. 1990

Tohoku J. Exp. Med.

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Estimated excretion and clearance of uric acid as optimal surrogate indices for daily urinary uric acid excretion

Tsutani

Otsuki

Mitsuke

et al. 2022

Modern Rheumatology

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Objectives Daily uric acid excretion is an essential index for patients with gout/hyperuricemias. We identified alternative indices most correlated with 24-hour uric acid clearance (Cua 24h) and 24-hour uric acid excretion (Eua 24h) using data from the reference interval of urinary clearance and excretion of urate study. Methods The subjects were indoor workers aged 20 to 65 who met the Clinical and Laboratory Standards Institute Guidelines C28-A3c. Alternative indices using spot urine were urine uric acid creatinine ratio, uric acid clearance - creatinine clearance ratio (Cua/Ccr), uric acid excretion - creatinine clearance ratio (Eua/Ccr), estimated uric acid clearance (eCua), and estimated uric acid excretion (eEua). eCua and eEua are the values obtained by multiplying Cua/Ccr and Eua/Ccr by the estimated glomerular filtration rate. Results The final number of subjects analyzed was 739. Among the indices using spot urine, eCua and eEua showed the highest correlation with Cua 24h and Eua 24h, respectively. Compared with Cua 60min and Eua 60min obtained from 60-minute urine collection, eCua and eEua showed lower root means squared error, lower bias, and significantly higher accuracy of within 30% and within 15%. Conclusions The newly proposed eCua and eEua may be appropriate from a practical perspective.

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A simple method for measuring 24-hour urinary excretions of salt and potassium.

Cited by 2 publications

References 5 publications

Evaluation of the individual effects of a health education program for sodium restriction by a simple method for measuring 24-hour urinary sodium excretion.

Evaluation of the individual effects of a health education program for sodium restriction by a simple method for measuring 24-hour urinary sodium excretion.

Estimated excretion and clearance of uric acid as optimal surrogate indices for daily urinary uric acid excretion

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