PharmacologyLesson 6 of 7 in the course Antihypertensive and Antianginal Drugs

Thiazide and Potassium-Sparing Diuretics: Actions and Safe Use

3 flashcards · 4 quiz questions · 5 match pairs · 5 fill-in sentences · English

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Summary

Diuretics increase sodium loss and urine production. They are commonly used to treat hypertension, heart failure, and states of excess fluid volume. This lesson introduces the diuretic classes emphasized in hypertension care and explains how they work and what risks they can cause.

Diuretics promote sodium excretion by the kidneys; water follows sodium into the urine. The resulting increase in urine flow can reduce excess fluid volume and help lower blood pressure.

All flashcards

Typical adult oral hydrochlorothiazide dose for hypertension
12.5–50 mg daily.
Listed hydrochlorothiazide interaction: lithium
Lithium is listed as a possible interaction to review with a health professional.
Client factors that warrant caution with diuretics
Older age, renal or hepatic impairment, arrhythmias, gout, or orthostatic hypotension risk.

Quiz questions

  1. Where do thiazide and thiazide-like diuretics inhibit sodium and chloride reabsorption?Answer: In the distal renal tubules.
  2. Which effect characterizes potassium-sparing diuretics?Answer: They reduce aldosterone-related sodium and water retention while retaining potassium.
  3. Which potassium imbalance is associated with thiazide and thiazide-like diuretics?Answer: Hypokalemia from increased potassium loss.
  4. Which condition is listed as a contraindication to hydrochlorothiazide?Answer: Anuria.

Based on Pharmacology for Nurses by Tina Barbour-Taylor, Leah Mueller (Sabato), Donna Paris, Dorie Weaver (OpenStax), licensed CC BY 4.0. Adapted into a summary, flashcards and quizzes.

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