HCTZ teaching priorities
Hydrochlorothiazide is a thiazide diuretic that inhibits the Na/Cl symporter in the distal convoluted tubule and is first-line for HTN. Important teaching: take in the morning to prevent nocturia and sleep disruption; report electrolyte symptoms — hypokalemia (cramps, weakness, palpitations, arrhythmia), hyponatremia (HA, confusion, falls in elderly), and hypomagnesemia; expect hypercalcemia (clinically used in osteoporosis) but report bone pain, kidney stones; report hyperuricemia/gout flare; expect mild hyperglycemia (matters in DM); use sunscreen for photosensitivity; check sulfonamide allergy. Evening dosing is wrong because of nocturia. Therapeutic effect on BP takes 2-4 weeks.
In-depth explanation
Clinical reasoning summary
HCTZ teaching priorities
Hydrochlorothiazide is a thiazide diuretic that inhibits the Na/Cl symporter in the distal convoluted tubule and is first-line for HTN. Important teaching: take in the morning to prevent nocturia and sleep disruption; report electrolyte symptoms — hypokalemia (cramps, weakness, palpitations, arrhythmia), hyponatremia (HA, confusion, falls in elderly), and hypomagnesemia; expect hypercalcemia (clinically used in osteoporosis) but report bone pain, kidney stones; report hyperuricemia/gout flare; expect mild hyperglycemia (matters in DM); use sunscreen for photosensitivity; check sulfonamide allergy. Evening dosing is wrong because of nocturia. Therapeutic effect on BP takes 2-4 weeks.
For study reference only. Always follow current clinical guidelines and your institution’s protocols.