17 results
Hypokalemia Differential Diagnosis Algorithm

Low intake 
• poor oral intake 

Renal loss 
• Medication 
• Hypomagnesemia 
•
Diagnosis Algorithm Low ... Medication • Hypomagnesemia ... Renal tubular acidosis ... Diagnosis #Algorithm #Causes ... #Classification
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Renal tubular acidosis ... - Polyuria - Hypomagnesemia ... #Potassium #Table ... #Classification ... #Causes
Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia: 
 • Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,
Guillain-Barré syndrome ... Hyperreflexia: • Hypocalcemia ... , Hypomagnesemia ... differential #diagnosis #table ... #neurology
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Hypercalcemia - Hypokalemia ... Differential #Diagnosis #Low ... #Magnesium #Table ... #Classification ... #Causes #Workup
Hypomagnesemia - Differential Diagnosis
Renal Causes of Hypomagnesemia - Familial:
Bartter syndrome and Gitelman syndrome, Isolated recessive hypomagnesemia,
Familial: Bartter syndrome ... and Gitelman syndrome ... with secondary, hypocalcemia ... #nephrology #magnesium ... #low
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Hypokalemia - Differential ... • Metabolic acidosis ... • Metabolic acidosis ... Diagnosis #Algorithm #causes ... #nephrology
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
Causes of Hypokalemia ... Defining the cause ... Renal K loss • Hypomagnesemia-induced ... Renal tubular acidosis ... #nephrology #potassium
Causes of Hypokalemia
Transcellular Shifts:
 - Alkalosis, Increased plasma insulin (treatment of diabetic ketoacidosis), ß-Adrenergic agonists, Hypokalemic
Causes of Hypokalemia ... Alcoholism (worsened by hypomagnesemia ... Renal tubular acidosis ... #Causes #differential ... #diagnosis #nephrology
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
wasting from other causes ... suggests extra-renal causes ... consumption • Low ... - Metabolic acidosis ... #low
Gitelman Syndrome Overview

What?
• Inherited (AR) hypokalemic salt-losing tubulopathies affecting the thiazide-sensitive sodium chloride cotransporter
• Gitelman's syndrome
, mild hypomagnesemia ... alkalosis • Normal or low ... potassium wasting) • Hypomagnesemia ... Renal tubular acidosis ... #diagnosis #nephrology