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When used this way, "thiazide" refers to a drug which acts at the thiazide receptor. [7] The thiazide receptor is a sodium-chloride transporter that pulls NaCl from the lumen in the distal convoluted tubule. Thiazide diuretics inhibit this receptor, causing the body to release NaCl and water into the lumen, thereby increasing the amount of ...
Hydrochlorothiazide, sold under the brand name Hydrodiuril among others, is a diuretic medication used to treat hypertension and swelling due to fluid build-up. [4] Other uses include treating diabetes insipidus and renal tubular acidosis and to decrease the risk of kidney stones in those with a high calcium level in the urine. [4]
The first line of treatment is hydrochlorothiazide and amiloride. [10] Patients may also consider a low-salt and low-protein diet. Thiazide diuretics cause a mild decrease in extracellular fluid volume through natriuresis and diuresis which in turn increases the proximal absorption of sodium and water, lowering urine output. [11]
Thiazide diuretics are sometimes combined with amiloride to prevent hypokalemia caused by the thiazides. It seems paradoxical to treat an extreme diuresis with a diuretic, and the exact mechanism of action is unknown but the thiazide diuretics will decrease distal convoluted tubule reabsorption of sodium and water, thereby causing diuresis.
The thiazide diuretics also deplete circulating potassium unless combined with a potassium-sparing diuretic or supplemental potassium. Some authors have challenged thiazides as first line treatment. [55] [56] [57] However, as the Merck Manual of Geriatrics notes, "thiazide-type diuretics are especially safe and effective in the elderly." [58]
Chlortalidone (or other thiazide medication) is a key component of treatment of nephrogenic diabetes insipidus. Nephrogenic diabetes insipidus occurs when the kidney is unable to concentrate urine because it has an inadequate response to vasopressin-dependent removal of free water from the renal tubular filtrate.
Some diuretics, such as acetazolamide, help to make the urine more alkaline, and are helpful in increasing excretion of substances such as aspirin in cases of overdose or poisoning. Diuretics are sometimes abused by people with an eating disorder, especially people with bulimia nervosa, with the goal of losing weight. [citation needed]
Thiazide diuretics are used to treat patients with heart failure. Their goal is to decrease the amount of salt (sodium chloride) in the body by decreasing the amount that the kidney reabsorbs . This excess sodium in the kidneys that is destined for excretion via urination can cause hyponatremia (low sodium level) and can lead to kaliuresis by ...