13 results
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Excessive GI losses ... renal tubular dysfunction ... syndromes - Gitelman ... Magnesium #Table #Classification ... #Causes #Workup
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Differential Diagnosis Algorithm ... Loop and thiazide diuretics ... Bartter syndrome, Gitelman ... Differential #Diagnosis #Algorithm ... #causes #potassium
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
Hypokalemia Evaluation Algorithm ... treated with IV potassium ... Alkalosis: Emesis, Diuretics ... Bartter syndrome, Gitelman ... #differential #potassium
Hypokalemia Differential Diagnosis Algorithm

Low intake 
• poor oral intake 

Renal loss 
• Medication 
• Hypomagnesemia 
•
Differential Diagnosis Algorithm ... Hypomagnesemia • Osmotic diuresis ... tubular acidosis • Gitelman's ... Differential #Diagnosis #Algorithm ... #Causes #Classification
Hypokalemia Differential Diagnosis Algorithm
Hypertensive:
 • High Al, Low R - Primary aldosteronism
 • High Al, High
Differential Diagnosis Algorithm ... >20 mEq/24 h - Diuretics ... Bartter's syndrome, Gitelman's ... #nephrology #causes ... #low #potassium
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
Differential Diagnosis Algorithm ... Post-hypercapnia • Diuretics ... Bartter's syndrome, Gitelman's ... differential #diagnosis #algorithm ... #potassium
Hyperkalemia Differential Diagnosis Algorithm
R/O Pseudo-hyperkalemia:
 • Possible Lab error! Alwavs Repeat Blood sample!
 • Leukocytosis, Thrombocytosis:
Differential Diagnosis Algorithm ... tourniquet while drawing ... Differential #Diagnosis #Algorithm ... #causes #potassium ... #high #pathophysiology
Gitelman Syndrome Overview

What?
• Inherited (AR) hypokalemic salt-losing tubulopathies affecting the thiazide-sensitive sodium chloride cotransporter
• Gitelman's syndrome
with thiazide diuretic ... abuse • Salt craving ... Surreptitious diuretic ... Supplement: • Potassium ... nephrology #management #pathophysiology
Metabolic Alkalosis - Urinary Chloride Algorithm
Cl- responsive metabolic alkalosis
 • Kidney loss of Cl-
Urinary Chloride Algorithm ... loop or thiazide diuretics ... Bartter syndrome, Gitelman ... the indicated causes ... of sodium and potassium
Hypochloremia - Differential Diagnosis Algorithm

Cause - Decreased Intake:
 • Low salt in diet
 • Exclusive D5W
Differential Diagnosis Algorithm ... RENAL LOSS: - Diuresis ... - Bartter - Gitelman ... gastrointestinal osmotic gradient ... #Pathophysiology