Day and Night Urine during complete rest, Laboratory Routine, Light Muscular Work and Oxygen Administration

Campbell, J. Argyll; Webster, T. A.

doi:10.1042/bj0150660

Cited by 43 publications

(12 citation statements)

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“…40,43,[47][48][49]52 Diurnal variations in excretion of sodium, chloride, potassium, and water have been observed in many studies. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Creatinine excretion has generally been reported to be fairly constant over 24 h, 2,7,11,26,28 and on average this was the case for the men in this study. Water and electrolyte excretion in healthy individuals generally reaches a maximum sometime around midday and a minimum toward the end of sleep.…”

Section: Discussionmentioning

confidence: 94%

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] A reversal of the usual diurnal cycle of sodium, chloride, and water excretion (ie, higher excretion at night) has been reported for persons with a number of diseases. 10,[17][18][19][20][21][22] Investigators have also reported a reversal or flattening of the usual cycle of sodium and chloride excretion in hypertensives.…”

Section: Introductionmentioning

confidence: 99%

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Blood pressure and diurnal variation in sodium, potassium, and water excretion

et al. 1998

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The objective of this study was to examine associations of blood pressure (BP) with ratios of overnight to 24-h urinary excretion of sodium, potassium, and water. Each of 125 men 27-64 years of age, not taking diuretics, had BP measured during the day on a Monday. Beginning Monday evening, each participant provided three carefully timed 24-h urine collections, divided into daytime and overnight (bedtime to awakening) specimens. Proportion of total 24-h excretion of sodium, potassium, and water in the overnight specimen, standardised for creatinine excretion, was determined for each 24-h period. Associations of systolic and diastolic BP (SBP/DBP) with these proportions were examined with control for age, body mass index, alcohol intake, and heart rate. Mean BP was 116/71 mm Hg; 15 men were on non-diuretic anti-hypertensive therapy. Mean 24-h urinary excretion was 168 mmol for sodium, 68 mmol for potassium, and 16 mmol for creatinine. Mean overnight

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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Blood pressure and diurnal variation in sodium, potassium, and water excretion

et al. 1998

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“…While the subjects were on the low salt diet during periods in which similar night and day sodium excretion was achieved, definite but slight inhibition of nocturnal water diuresis was demonstrated. 3. When the subjects were on the diet of higher salt content, sodium excretion during the water diuresis was much less at night than during the day.…”

Section: Discussionmentioning

confidence: 99%

Diurnal Variation in the Diuretic Response to Ingested Water

Papper¹,

Rosenbaum²

1952

J. Clin. Invest.

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“…1 " 16 A reversal of the usual diurnal cycle of sodium, chloride, and water excretion (i.e., higher excretion at night) has been reported for persons with such diseases as cirrhosis of the liver, congestive heart failure, nephrosis, glomerulonephritis, Cushing's disease, and primary hyperaldosteronism. 10 ' "~u Some investigators have also reported a reversal of the usual cycle of sodium and chloride excretion in hypertensive persons.…”

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confidence: 99%

Do hypertensive patients have a different diurnal pattern of electrolyte excretion?

et al. 1987

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SUMMARY Studies generally indicate that excretion of sodium, potassium, and water is greater during the day than during the night. To determine whether hypertensive patients exhibit this same pattern of excretion, diurnal variations in excretion of sodium, potassium, creatinine, and water were examined in 107 hypertensive men and women from a clinical trial on control of hypertension by nonpharmacological means -the Hypertension Control Program. Each participant provided two carefully timed 24-hour urine collections divided into daytime and overnight specimens. The median ratios of 24-hour to 8-hour overnight excretion were 2.84,3.95,2.99, and 2.77 for sodium, potassium, creatinine, and water, respectively. Thus, more than half of this hypertensive group exhibited a greater rate of sodium and water excretion during sleep than during daytime hours, a reversal of the usual pattern. When the group was subdivided based on age, sex, race, trial randomization group, use of diuretics, and hypertension severity, women had significantly lower ratios of 24-hour to overnight excretion for sodium and water than men and blacks had significantly lower 24-hour to overnight ratios for water and potassium than whites. When the 24-hour to overnight ratios for these hypertensive patients were compared with those for a group of 30 men and women with high-normal blood pressure, those with high-normal blood pressure had significantly larger ratios for sodium and water excretion than the hypertensive group. The results of this study suggest that hypertensive patients may have a different diurnal pattern of sodium and water excretion than normotensive subjects and that further research is needed to clarify this issue. (Hypertension 10: 417-424, 1987) KEY WORDS • hypertension • electrolytes • diurnal patterns D IURNAL variations in urinary excretion of sodium, chloride, potassium, and water have long been recognized, with excretion of water and electrolytes generally reaching a maximum some-

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Day and Night Urine during complete rest, Laboratory Routine, Light Muscular Work and Oxygen Administration

Cited by 43 publications

References 1 publication

Blood pressure and diurnal variation in sodium, potassium, and water excretion

Blood pressure and diurnal variation in sodium, potassium, and water excretion

Diurnal Variation in the Diuretic Response to Ingested Water

Do hypertensive patients have a different diurnal pattern of electrolyte excretion?

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