19 results
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
cells FEMg >4% = renal ... if renal function ... Hypomagnesemia #algorithm #differential ... #diagnosis #causes ... #low
Hypermagnesemia - Etiologies by Mechanism
Renal Failure 
Excessive Mg Administration 
 - Massive PO intake
by Mechanism Renal ... intake - Magnesium ... Hypermagnesemia #Differential ... #Diagnosis #High ... #Magnesium #Table
Hypomagnesemia - Differential Diagnosis
Renal Causes of Hypomagnesemia - Familial:
Bartter syndrome and Gitelman syndrome, Isolated recessive hypomagnesemia,
Hypomagnesemia - Differential ... Diagnosis Renal ... #diagnosis #causes ... #nephrology #magnesium ... #low
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting, NGT
Metabolic Alkalosis - Differential ... Diagnosis Algorithm ... hyperaldosteronism • High PRA: Renal ... Metabolic #Alkalosis #Differential ... #Diagnosis #Algorithm
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
Metabolic Alkalosis - Differential ... Diagnosis Algorithm ... hyperaldosteronism • High PRA: Renal ... Metabolic #Alkalosis #Differential ... #Diagnosis #Algorithm
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
diarrhea / IBD Renal ... - Familial renal ... Hypomagnesemia #Differential ... #Diagnosis #Low ... #Magnesium #Table
Inherited Defects in Kidney Tubule Epithelial Cells

Renal glucosuria - Na+-dependent glucose cotransporter
Cystinuria - Amino acid transporter
Bartter
Epithelial Cells Renal ... receptor Distal renal ... Kidney #Nephrology #Diagnosis ... #Differential # ... Table
Types of Renal Calculi

Calcium oxalate
 - Interstitial apatite plaque, Low urine volume, Increased urinary calcium excretion,
apatite plaque, Low ... Struvite - Magnesium ... , High dietary magnesium ... #stones #differential ... #diagnosis #causes
Causes of Hypomagnesemia - Differential Diagnosis Algorithm
GI LOSS - FeMg < 2-2.5% or 24h Urine Mg
Hypomagnesemia - Differential ... Diagnosis Algorithm ... Malabsorption RENAL ... Hypomagnesemia #Magnesium ... #Low #Causes #Differential
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Hypokalemia - Differential ... Diagnosis Poor ... Mineralocorticoid excess - Renal ... #Diagnosis #Low ... #Potassium #Table