19 results
Hypermagnesemia - Etiologies by Mechanism
Renal Failure 
Excessive Mg Administration 
 - Massive PO intake
Hypermagnesemia ... intake - Magnesium ... DrEricStrong #Hypermagnesemia ... #Table #Causes ... #Management
Hypomagnesemia - Differential Diagnosis
Renal Causes of Hypomagnesemia - Familial:
Bartter syndrome and Gitelman syndrome, Isolated recessive hypomagnesemia,
Hypomagnesemia - ... Diagnosis Renal Causes ... Renal Causes of ... differential #diagnosis #causes ... #nephrology #magnesium
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
Approach to Hypomagnesemia ... = (urine magnesium ... @NEPHKIDS1 #Hypomagnesemia ... differential #diagnosis #causes ... #nephrology #magnesium
Magnesium Electrolyte Repletion
Oral - Only do if patient does not tolerate IV
 • Magnesium oxide (can
Magnesium Electrolyte ... oxide (can cause ... diarrhea and cause ... Electrolyte #Repletion #management ... #hypomagnesemia
Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia: 
 • Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,
Reflex Testing - Causes ... Hypercalcemia, Hypermagnesemia ... Hypocalcemia, Hypomagnesemia ... differential #diagnosis #table ... #neurology
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Hypomagnesemia - ... Primary intestinal hypomagnesemia ... Diagnosis #Low #Magnesium ... #Table #Classification ... #Causes #Workup
Symptoms and Signs of Hypomagnesemia
Neuromuscular:
 - Tetany, Muscle weakness, Chvostek and Trousseau signs, Cerebellar (ataxia, nystagmus,
Symptoms and Signs of Hypomagnesemia ... Muscle weakness, Chvostek ... Dysphagia, Anorexia, nausea ... Hypocalcemia, Anemia #Hypomagnesemia ... #magnesium #Symptoms
Potassium Electrolyte Repletion
If patient also has hypomagnesemia, replete magnesium before repleting potassium
Oral:
 • Pills (ask pharmacy
patient also has hypomagnesemia ... , replete magnesium ... Intravenous (can cause ... Electrolyte #Repletion #management
Hypermagnesemia - Diagnosis and Management

Hypermagnesemia is a serum magnesium concentration > 2.6 mg/dL.
Symptoms include hyporeflexia, hypotension,
Diagnosis and Management ... mortality in ICU Causes ... helpful in severe cases ... #Diagnosis #Management ... #magnesium #nephrology
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
Causes of Hypomagnesemia ... aldosteronism #Hypomagnesemia ... #Causes #differential ... #diagnosis #nephrology ... #magnesium #low