27 results
Hypomagnesemia - Differential Diagnosis
Renal Causes of Hypomagnesemia - Familial:
Bartter syndrome and Gitelman syndrome, Isolated recessive hypomagnesemia,
Differential Diagnosis ... Bartter syndrome and Gitelman ... with secondary, hypocalcemia ... #differential #diagnosis ... #causes #nephrology
Gitelman Syndrome Overview

What?
• Inherited (AR) hypokalemic salt-losing tubulopathies affecting the thiazide-sensitive sodium chloride cotransporter
• Gitelman's syndrome
, mild hypomagnesemia ... (renal potassium ... Sjögren syndrome, Renal ... #Syndrome #diagnosis ... #nephrology #management
Hypomagnesemia (Serum level < 1.7 mg/dL)
Neuromuscular manifestations 
 • Tremor, tetany, seizures 
 • Weakness
Hypomagnesemia ( ... dysrhythmias Hypokalemia ... • Renal potassium ... metabolism • Hypocalcemia ... Signs #Symptoms #Diagnosis
Hypokalemia Differential Diagnosis Algorithm

Low intake 
• poor oral intake 

Renal loss 
• Medication 
• Hypomagnesemia 
•
Diagnosis Algorithm ... oral intake Renal ... Medication • Hypomagnesemia ... tubular acidosis • Gitelman's ... #Differential #Diagnosis
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
- Differential Diagnosis ... K loss • Hypomagnesemia-induced ... Bartter's syndrome, Gitelman's ... algorithm #causes #nephrology ... #potassium
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Diagnosis Poor ... Mineralocorticoid excess - Renal ... - Polyuria - Hypomagnesemia ... #Differential #Diagnosis ... #Low #Potassium
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Diagnosis Algorithm ... Extra-renal Losses ... Bartter syndrome, Gitelman ... Algorithm #causes #potassium ... #low #nephrology
Hypokalemia - Differential Diagnosis Algorithm

Transcellular Shift:
 • Alkalosis
 • ↑ beta-2 adrenergic simulation 
 • Erythropoiesis
Diagnosis Algorithm ... Medications Renal ... Losses Non-renal ... #Algorithm #nephrology ... #low #potassium
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Hypomagnesemia - ... diarrhea / IBD Renal ... Hypercalcemia - Hypokalemia ... syndromes - Gitelman ... #Differential #Diagnosis
Hyperkalemia: Diagnostic algorithm
Decreased renal potassium excretion
 • Acute renal failure
 • Chronic renal failure
 • Drugs
Increased
Hyperkalemia: Diagnostic ... • Acute renal ... • Type 1 #Hyperkalemia ... #Diagnosis #algorithm ... #nephrology #potassium