129 results
Hypomagnesemia - Differential Diagnosis
Renal Causes of Hypomagnesemia - Familial:
Bartter syndrome and Gitelman syndrome, Isolated recessive hypomagnesemia,
Differential Diagnosis ... Renal Causes of ... Renal Causes of ... Hypercalcemia, Post renal ... diagnosis #causes #nephrology
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
Approach to Hypomagnesemia ... cells FEMg >4% = renal ... magnesium loss if renal ... #algorithm #differential ... diagnosis #causes #nephrology
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
diarrhea / IBD Renal ... - Transient renal ... - Familial renal ... #Differential # ... Low #Magnesium #Table
Causes of Metabolic Alkalosis - Differential Diagnosis Algorithm
GI Losses - Gastric
 • Vomiting
 • NG suction
GI
Chloridorrhea Renal ... • Penicillins Renal ... loop/thiazide) • Hypomagnesemia ... Aldosterone-secreting mass • Adrenal ... MetabolicAlkalosis #NonGap #Nephrology
Drugs associated with hypokalemia and hypomagnesemia

Hypokalemia
- Shift from extracellular fluid to intracellular fluid compartment
  -
Extrarenal Laxatives - Renal ... pump inhibitor - Renal ... Antimicrobials Drug-induced renal ... #Medications #differential ... #diagnosis #nephrology
Causes of Hypermagnesemia
Increased magnesium load
 - Magnesium-containing laxatives, antacids, or enemas
 - Treatment of pre-edampsia/eclampsia (mothers
Causes of Hypermagnesemia ... Rhabdomyolysis Increased renal ... Mineralocorticoid deficiency, adrenal ... Addison's disease) #Hypermagnesemia ... Causes #diagnosis #differential
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
gastrointestinal K loss • Renal ... K loss • Hypomagnesemia-induced ... hypokalemia • Renal ... syndrome, Congenital adrenal ... algorithm #causes #nephrology
Hypermagnesemia - Etiologies by Mechanism
Renal Failure 
Excessive Mg Administration 
 - Massive PO intake
Hypermagnesemia ... by Mechanism Renal ... DrEricStrong #Hypermagnesemia ... #Differential # ... High #Magnesium #Table
Hyperkalemia: Diagnostic algorithm
Decreased renal potassium excretion
 • Acute renal failure
 • Chronic renal failure
 • Drugs
Increased
algorithm Decreased renal ... excretion • Acute renal ... failure • Chronic renal ... high: • Post-renal ... #potassium #differential
Hypomagnesemia (Serum level < 1.7 mg/dL)
Neuromuscular manifestations 
 • Tremor, tetany, seizures 
 • Weakness
Hypomagnesemia ( ... Hypokalemia • Renal ... calcitriol #Hypomagnesemia ... #Signs #Symptoms