Changes in total body potassium during long-term thiazide treatment: Effects of potassium supplements on total body and serum potassium in hypertensive patients with thiazide treatment

2011 ◽  
Vol 3 (01) ◽  
pp. 142-147 ◽  
Author(s):  
Yutaka Doi ◽  
Waturu Aoi ◽  
Shin Suzuki ◽  
Shinji Seto ◽  
Koreaki Baba ◽  
...  

1974 ◽  
Vol 19 (1_suppl) ◽  
pp. 40-44 ◽  
Author(s):  
H. J. Dargie ◽  
A. C. Kennedy ◽  
D. M. Ward ◽  
K. Boddy ◽  
Priscilla C. King


2019 ◽  
Vol 34 (Supplement_3) ◽  
pp. iii19-iii25
Author(s):  
Csaba P Kovesdy

Abstract Plasma potassium concentration is maintained in a narrow range to avoid deleterious electrophysiologic consequences of both abnormally low and high levels. This is achieved by redundant physiologic mechanisms, with the kidneys playing a central role in maintaining both short-term plasma potassium stability and long-term total body potassium balance. In patients with end-stage renal disease, the lack of kidney function reduces the body’s ability to maintain normal physiologic potassium balance. Routine thrice-weekly dialysis therapy achieves long-term total body potassium mass balance, but the intermittent nature of dialytic therapy can result in wide fluctuations in plasma potassium concentration and consequently contribute to an increased risk of arrhythmogenicity. Various dialytic and nondialytic interventions can reduce the magnitude of these fluctuations, but the impact of such interventions on clinical outcomes remains unclear.



1983 ◽  
Vol 34 (4) ◽  
pp. 448-453 ◽  
Author(s):  
Ulrik Gerner Svendsen ◽  
Hans Ibsen ◽  
Sten Rasmussen ◽  
Arne Leth ◽  
Meta Damkjær Nielsen ◽  
...  


1983 ◽  
Vol 28 (2) ◽  
pp. 172-175 ◽  
Author(s):  
J. M. B. Gray ◽  
D. H. Lawson ◽  
K. Boddy ◽  
W. East

Measurements of potassium status were reviewed in 23 hypertensive patients receiving metoprolol either alone or in combination with chlorthalidone or chlorthalidone plus potassium over an average period of nine months. There was no statistically significant change in plasma potassium, total blood cell or total body groups developed hypokalaemia (serum potassium <3.0mmol/l) in the absence of significant falls in total blood cell or total body potassium. Thus the use of chlorthalidone plus potassium did not provide adequate prophylaxis against hypokalaemia even in metoprolol recipients. The study confirms that monitoring parameters of potassium handling is still necessary in β-blocker recipients who also receive diuretics alone or in a fixed-dose combination with potassium.



1976 ◽  
Vol 51 (s3) ◽  
pp. 551s-554s
Author(s):  
H. M. Brecht ◽  
E. Werner ◽  
W. Schoeppe

1. The effect of long-term treatment with prindolol on blood pressure, total body potassium (Kt), exchangeable sodium (Nae) and plasma renin activity was investigated in twelve patients with essential hypertension. 2. Systolic and diastolic pressures were significantly reduced from 164/112 to 127/90 mmHg under basal conditions. 3. Before treatment Na. in patients with essential hypertension was significantly higher than in normotensive individuals. After an average of 16 weeks on prindolol Nae in patients with essential hypertension was significantly decreased, despite an average increase in body weight of 2 kg in the patients. 4. In contrast to the decrease in Nae, Kt was found to be significantly increased after long-term treatment with prindolol. Kt values of patients before and after prindolol, however, did not differ significantly from the corresponding sex- and age-dependent normal values. 5. Plasma renin activity was slightly diminished under basal and orthostatic conditions; the stimulatory effect of orthostasis was not abolished but reduced by prindolol. 6. It is suggested that the changes in sodium balance contribute to the anti-hypertensive effect of prindolol in patients with essential hypertension.



1996 ◽  
Vol 17 (3) ◽  
pp. 106-106
Author(s):  
Kenneth B. Roberts

Potassium is the major intracellular cation; only a very small fraction of total body potassium is in the intravascular space. Increased potassium concentration in serum is infrequent in pediatrics, but it can be life-threatening because of its effect on membrane potentials, particularly of heart muscle. The serum potassium concentration is affected primarily by the kidney. Potassium is filtered by the glomerulus, then reabsorbed and secreted by the tubule. Processes that interfere with filtration or secretion (eg, acute on chronic glomerulonephritis, interstitial nephritis) may cause hyperkalemia; processes that interfere with reabsorption may cause hypokalemia. The most common cause of an increased serum potassium is "pseudohyperkalemia" due to hemolysis or to tissue hypoxia distal to the placement of a tourniquet.



BMJ ◽  
1974 ◽  
Vol 4 (5940) ◽  
pp. 316-319 ◽  
Author(s):  
H. J. Dargie ◽  
K. Boddy ◽  
A. C. Kennedy ◽  
P. C. King ◽  
P. R. Read ◽  
...  


2009 ◽  
Vol 200 (1-6) ◽  
pp. 37-45 ◽  
Author(s):  
M. P. Leemhuis ◽  
K. J. Damme ◽  
A. Struyvenberg


Author(s):  
Pauline S. Powers ◽  
Ian B. Tyson ◽  
Beth A. Stevens ◽  
Albert V. Heal


1982 ◽  
Vol 63 (3) ◽  
pp. 257-270 ◽  
Author(s):  
C. Beretta-Piccoli ◽  
D. L. Davies ◽  
K. Boddy ◽  
J. J. Brown ◽  
A. M. M. Cumming ◽  
...  

1. Exchangeable sodium (NaE), plasma electrolytes and arterial pressure were measured in 121 normal subjects and 91 patients with untreated essential hypertension (diastolic >100 mmHg), 21 of whom had low-renin hypertension. Plasma concentrations of renin, angiotensin II and aldosterone were measured in all hypertensive patients, total body sodium, total body potassium and exchangeable potassium (KE) in some patients. 2. Mean NaE was not different in normal and hypertensive subjects provided the two groups were matched for leanness index. In the subgroup of young hypertensive patients aged 35 years or less mean NaE was below normal. NaE was not related to arterial pressure in normal subjects but in hypertensive patients there were positive and significant correlations of arterial pressure with NaE and with total body sodium. 3. NaE and total body sodium increased with age in hypertensive but not in normal subjects. Partial regression analysis suggested that the correlation of NaE with arterial pressure was not explained by an influence of age. 4. Mean NaE was not increased and mean KE was not decreased in patients with low-renin hypertension. 5. Plasma potassium concentration, KE and total body potassium correlated inversely and significantly with blood pressure in hypertensive patients. These correlations were more marked in young than in old patients. 6. Multiple regression analysis showed that the combination of NaE and plasma potassium concentration ‘explained’ more of the variation of systolic blood pressure in hypertensive patients than it did in normal subjects. Plasma potassium concentration ‘explained’ more of the variation in young hypertensives and NaE ‘explained’ more in older patients. 7. Our findings suggest that changes of plasma and body potassium are important in the earlier stages of essential hypertension and that changes of body sodium become important later.



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