16 results
Diuretics sites of action on the nephron
1) Acetazolamide (carbonic anhydrase inhibitor)
2) Osmotic diuretics (e.g. mannitol)
3) Loop
action on the nephron ... Metolazone) 5) Potassium-sparing ... triamterene) #nephron ... #diuretics #pharmacology ... #nephrology #medications
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting, NGT
Primary Metabolic Alkalosis ... intake, Diuretics ... -: Diuretics, Bartter ... Syndrome, Gitelman ... Diagnosis #Algorithm #nephrology
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
Primary Metabolic Alkalosis ... intake, Diuretics ... -: Diuretics, Bartter ... Syndrome, Gitelman ... Diagnosis #Algorithm #Nephrology
Diuretics - Pharmacology

Thiazides diuretics:
 • Inhibit Na+ Cl- cotransporter in distal tubule
 • Chlorothiazide, Chlorthalidone, Indapamide,
Diuretics - Pharmacology ... • Inhibit Na+ Cl ... Piretanide Potassium ... loss through the nephron ... nephrology #conversion
Gitelman Syndrome Pathophysiology
Gitelman Syndrome is a rare autosomal recessive salt-losing tubulopathy with a prevalence of 1-
Gitelman Syndrome ... distal tubule. ↑ Nacl ... delivery to distal nephron ... Hypokalemia Metabolic alkalosis ... Pathophysiology #nephrology
Metabolic Alkalosis - Urinary Chloride Algorithm
Cl- responsive metabolic alkalosis
 • Kidney loss of Cl-
loop or thiazide diuretics ... pressure: Active diuretic ... Bartter syndrome, Gitelman ... of sodium and potassium ... urine #Algorithm #nephrology
Hypokalemia Differential Diagnosis Algorithm
Hypertensive:
 • High Al, Low R - Primary aldosteronism
 • High Al, High
Hypertensive: • High Al ... >20 mEq/24 h - Diuretics ... Bartter's syndrome, Gitelman's ... Diagnosis #Algorithm #nephrology ... #causes #low #potassium
Causes of Metabolic Alkalosis: Differential Diagnosis
ECF volume contracted: urine chloride concentration <20 meq/L
 • Gastric alkalosis:
Thiazide or loop diuretics ... after renal tubule diuretic ... furosemide-like lesion) • Gitelman ... other • Severe potassium ... Diagnosis #Causes #nephrology
Gitelman Syndrome Overview

What?
• Inherited (AR) hypokalemic salt-losing tubulopathies affecting the thiazide-sensitive sodium chloride cotransporter
• Gitelman's syndrome
with thiazide diuretic ... Hypokalemia (renal potassium ... Surreptitious diuretic ... Supplement: • Potassium ... Syndrome #diagnosis #nephrology
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
treated with IV potassium ... - Metabolic Alkalosis ... : Emesis, Diuretics ... Bartter syndrome, Gitelman ... #nephrology #low