9 results
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
if renal function ... Hypomagnesemia #algorithm ... #differential #diagnosis ... #causes #nephrology ... #magnesium #low
Hypokalemia - Differential Diagnosis Algorithm

Transcellular Shift:
 • Alkalosis
 • ↑ beta-2 adrenergic simulation 
 • Erythropoiesis
- Differential Diagnosis ... Losses Non-renal ... vomiting) • Low ... #Algorithm #nephrology ... #low #potassium
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
- Differential Diagnosis ... Algorithm Extra-renal ... loss (Diarrhea) Renal ... #potassium #low ... #nephrology
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
(K) & magnesium( ... suggests extra-renal ... #Hypokalemia #diagnosis ... #potassium #nephrology ... #low
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
steatorrhea) • Renal ... osmotic diuresis, Potassium ... #differential #diagnosis ... #nephrology #magnesium ... #low
Hypokalemia Diagnostic Algorithm
To assess potassium excretion: perform 24-hour urine collection or alternatively obtain potassium-to-creatinine ratio on
Hypokalemia Diagnostic ... Algorithm To assess ... values suggest renal ... #Algorithm #TTKG ... #nephrology #low
Causes of Hypokalemia - Differential Diagnosis Algorithm
Decreased intake (rare cause in isolation)
GI loss - Urine loss
- Differential Diagnosis ... Algorithm Decreased ... Gittelman's syndrome • Magnesium ... aldosterone • Renal ... #Hypokalemia #Nephrology
Causes of Hypokalemia
I. Decreased intake
   A. Starvation
   B. Clay ingestion
II. Redistribution into
Renal 1. ... Magnesium deficiency ... #Differential #Diagnosis ... #Low #Potassium ... #Classification
Gitelman Syndrome Overview

What?
• Inherited (AR) hypokalemic salt-losing tubulopathies affecting the thiazide-sensitive sodium chloride cotransporter
• Gitelman's syndrome
alkalosis • Normal or low ... potassium wasting ... • Magnesium ... Gitelman #Syndrome #diagnosis ... #nephrology #management