The document discusses the mechanisms and effects of different classes of diuretic drugs, including thiazide and loop diuretics. It explains that thiazides act in the distal tubule to inhibit sodium reabsorption, causing a modest diuresis. Loop diuretics act in the ascending loop of Henle and cause a greater natriuresis than thiazides. Both can cause hypokalemia and other electrolyte abnormalities as side effects. The document outlines the clinical uses of these diuretics to treat conditions like edema, hypertension, and hypocalciuria. It also discusses factors that can contribute to diuretic resistance.
Diuretics enhances the urine output. It is mainly used in treatment of hypertension, hypervolumia, edema, congestive cardiac failure, electrolyte imbalances etc. They have some adverse reactions like hypotension, dehydration, hypovolumia, etc.
Diuretics enhances the urine output. It is mainly used in treatment of hypertension, hypervolumia, edema, congestive cardiac failure, electrolyte imbalances etc. They have some adverse reactions like hypotension, dehydration, hypovolumia, etc.
Mechanism of urine formation
Definition and classification of diuretics
MOA and SAR of each class
Their dose and adverse effects
Pharmacologicaol uses
all about diuretics
Mechanisms of diuretic drugs. Diuretic drugs increase urine output by the kidney (i.e., promote diuresis). This is accomplished by altering how the kidney handles sodium. If the kidney excretes more sodium, then water excretion will also increase.
in this presentation i have tried to briefly discuss about diuretics (water pills), their classification, mechanism of action, pharmacokinetics and pharmacodynamics of these drugs
Mechanism of urine formation
Definition and classification of diuretics
MOA and SAR of each class
Their dose and adverse effects
Pharmacologicaol uses
all about diuretics
Mechanisms of diuretic drugs. Diuretic drugs increase urine output by the kidney (i.e., promote diuresis). This is accomplished by altering how the kidney handles sodium. If the kidney excretes more sodium, then water excretion will also increase.
in this presentation i have tried to briefly discuss about diuretics (water pills), their classification, mechanism of action, pharmacokinetics and pharmacodynamics of these drugs
Diuretics and antidiuretics detail STUDYNittalVekaria
diuretics and antidiuretics detail study
-diuretic are the drug which increase the urine formation and excretion.
- antidiuretic work by decrease the urine formation.
classification, mechanism of action, use ,pharmacokinetic, pharmacodynamic,adverse effect
-newer drug
-banned diuretic and antidiuretic drug
WHAT IS DIURETIC RESISTANCE?How to Tackle Congestion in Heart Failure?Renal handling of sodium and water.Adverse effects of major diuretics.There are two forms diuretic tolerance
Pathophysiology and mechanisms of loop diuretic resistance.Combination Diuretic Therapy. IV Diuretic .
Isolated ultrafiltration
Diuretics
Pharmacology
Katzung
Abnormalities in fluid volume and electrolyte composition are common and important clinical disorders. Drugs that block specific transport functions of the renal tubules are valuable clinical tools in the treatment of these disorders. Although various agents that increase urine volume (diuretics) have been described since antiquity, it was not until 1937 that carbonic anhydrase inhibitors were first described and not until 1957 that a much more useful and powerful diuretic agent (chlorothiazide) became available. Technically, a “diuretic” is an agent that increases urine volume, whereas a “natriuretic” causes an increase in renal sodium excretion and an “aquaretic” increases excretion of solute-free water. Because natriuretics almost always also increase water excretion, they are usually called diuretics. Osmotic diuretics and antidiuretic hormone antagonists (see Agents That Alter Water Excretion) are aquaretics that are not directly natriuretic.
Diuretics are substances that increase the rate and flow of urine. Here we look at the various classes of diuretics, their actions and other pharmacological effects,
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Diuretics
1. From Knauf & Mutschler Klin. Wochenschr. 1991 69:239-250 70% 20% 5% 4.5% 0.5% Volume 1.5 L/day Urine Na 100 mEq/L Na Excretion 155 mEq/day 100% GFR 180 L/day Plasma Na 145 mEq/L Filtered Load 26,100 mEq/day CA Inhibitors Proximal tubule Loop Diuretics Loop of Henle Thiazides Distal tubule Antikaliuretics Collecting duct Thick Ascending Limb
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4. N N SO 2 NH 2 SO 2 NH 2 NH 2 NH 2 NH 2 SO 2 NH 2 Cl Cl SO 2 NH 2 SO 2 NH 2 Cl SO 2 NH 2 N C N SO 2 Prontosil Sulfanilamide p-chlorobenzene sulfonamide 1,3 disulfonamide 6 cholrobenzene Cholrothiazide
7. Inhibition of high-affinity 3 H-metolazone binding by ions Data from Beaumont et. Al.: Thiazide diuretic drug receptors in rat kidney: identification with 3H]metolazone. Proc. Natl. Acad. Sci. USA 1988, 85:2311-2314. 112±5 Trisodium citrate 118±12 Dipotassium sulfate 152±22 Disodium sulfate 95±5 K acetate 82±5 Na acetate 12±2 KI 25±1 NaI 24±2 NaBr 36±7 Choline chloride 44±2 KCl 20±0.5 NaCl 4±1 LiCl 143±9 NaF % Control Ion
8. Correlation of the daily clinical doses of thiazide diuretics with their affinity for high-affinity 3 H-metolazone binding sites in rat kidney. Correlation coefficient r=0.7513. From Beaumont et al.: Thiazide diuretic drug receptors in rat kidney: identification with [ 3 H]metolazone. Proc. Natl. Acad. Sci. USA 1988, 85:2311-2314.
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11. From Birkenhäger, WH: Diuretics and blood pressure reduction: physiological aspects. J. Hyperten. 1990, 8 (Suppl 2) S3-S7. Schematic drawing of temporal changes in mean arterial pressure (MAP), total peripheral vascular resistance (TPR), cardiac output (CO) and plasma volume (PV) during thiazide treatment of a hypertensive subject
12. From Birkenhäger, WH: Diuretics and blood pressure reduction: physiological aspects. J. Hyperten. 1990, 8 (Suppl 2) S3-S7.
13. From Birkenhäger, WH: Diuretics and blood pressure reduction: physiological aspects. J. Hyperten. 1990, 8 (Suppl 2) S3-S7.
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19. From Martinez-Maldonado, M, and Cordova, HR: Cellular and molecular aspects of the renal effects of diuretic agents. Kidney Int. 1990, 38:632-641.
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21. From Brater, DC. Pharmacodynamic considerations in the use of diuretics. Ann. Rev. Pharmacol. Toxicol 1983, 23:45-62.
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23. From Brater, DC. Pharmacodynamic considerations in the use of diuretics. Ann. Rev. Pharmacol. Toxicol 1983, 23:45-62.
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27. From Brater, DC. Pharmacology of Diuretics. Am. J. Med. Sci. 2000, 319:38-50. FE Na (%)
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30. Maximum Doses of Loop Diuretics Data from Brater, DC. Pharmacology of Diuretics. Am. J. Med. Sci. 2000, 319:38-50. Oral intravenous Dose of furosemide (mg) Clinical Condition 160 80 Renal Insufficiency 0 < Cl Cr < 50 400 200 Renal Insufficiency Cl Cr < 20 240 120 Nephrotic Syndrome 80 40 Cirrhosis 80-160 40-80 Congestive Heart Failure