When instructing a client diagnosed with hypertension on the purpose of a diuretic, the nurse should explain the mechanism of action to be:
1. promoting sodium and water loss.
2. retention of sodium and water.
3. working on the heart vessels.
4. decreasing heart rate.
1
Diuretics are used to decrease hypertension and to reduce edema. The antihypertensive effect occurs by promoting sodium and water loss by blocking sodium and chloride reabsorption. This causes a decrease in fluid volume and a lowering of blood pressure. Diuretics do not aid in the retention of sodium and water. Diuretics do not work on the heart vessels and do not decrease the heart rate.
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