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Potassium-sparing diuretics or antikaliuretics [1] refer to drugs that cause diuresis without causing potassium loss in the urine. [2] They are typically used as an adjunct in management of hypertension , cirrhosis , and congestive heart failure . [ 3 ]
Potassium-sparing diuretic; T. Triamterene This page was last edited on 4 April 2013, at 23:04 (UTC). Text is available under the Creative Commons Attribution ...
The thiazides and potassium-sparing diuretics are considered to be calcium-sparing diuretics. [6] The thiazides cause a net decrease in calcium lost in urine. [7] The potassium-sparing diuretics cause a net increase in calcium lost in urine, but the increase is much smaller than the increase associated with other diuretic classes. [7]
ATC code C03 Diuretics is a therapeutic subgroup of the Anatomical Therapeutic Chemical Classification System, a system of alphanumeric codes developed by the World Health Organization (WHO) for the classification of drugs and other medical products.
The same year, 1959, spironolactone was launched as a potassium-sparing diuretic. It became clear years later that aldosterone antagonists inhibit a specific receptor protein. This protein has high affinity for aldosterone but also for cortisol in humans and corticosterone in mice and rats. For this reason, aldosterone antagonists were called ...
The potassium-sparing effects of amiloride offset the low blood potassium (hypokalemia) that is often induced by thiazides or loop diuretics, which is of particular importance in people for whom maintaining a normal level of potassium is critically important. [6]
[medical citation needed] The classification of spironolactone as a "potassium-sparing diuretic" has been described as obsolete. [37] Spironolactone is also used to treat Bartter's syndrome due to its ability to raise potassium levels. [38] Spironolactone has antiandrogenic activity.
Triamterene directly blocks the epithelial sodium channel [4] (ENaC) on the lumen side of the kidney collecting tubule. [5]: 127 Other diuretics cause a decrease in the sodium concentration of the forming urine due to the entry of sodium into the cell via the ENaC, and the concomitant exit of potassium from the principal cell into the forming urine.