What it means
A potassium-sparing diureticdy-yoo-RET-ikA drug that makes the kidneys pass more water and salt out of the body as urine.dia- throughur/o urine-etic relating toFull entry that blocks aldosterone, the hormone that makes the kidneys hold sodium and water and let go of potassium. It is used for heart failure, high blood pressure, fluid buildup from liver disease and too much aldosterone. Because it keeps potassium in, hyperkalemiahy-per-kuh-LEE-mee-uhA blood potassium level above normal, over 5.0 mEq/L.hyper- abovekal potassium (from its Latin name, kalium)-emia in the bloodFull entry is its main risk. It can also cause breast enlargement in men.
For the nurse
Check the potassium level and kidney function before and during treatment. Teach the client to avoid potassium supplements, salt substitutes and large amounts of high-potassium foods unless the provider says otherwise, and to report muscle weakness or an irregular heartbeat.
At a glance
| Drug class | potassium-sparing diuretic (aldosterone antagonist) |
|---|---|
| Brand names | Aldactone, CaroSpir |
| Spanish | espironolactona |
| Also written | Aldactone, CaroSpir |
Related terms
potassium
A mineral in the blood that nerves and muscles, including the heart, need in order to work.
hyperkalemia
A blood potassium level above normal, over 5.0 mEq/L.
diuretic
A drug that makes the kidneys pass more water and salt out of the body as urine.
heart failure
A long-term condition in which the heart cannot pump enough blood to meet the body's needs.