51 results
Hypomagnesemia - Differential Diagnosis
Renal Causes of Hypomagnesemia - Familial:
Bartter syndrome and Gitelman syndrome, Isolated recessive hypomagnesemia,
Renal Causes of ... Renal Causes of ... pentamidine), Hypercalcemia ... , Post renal transplant ... #nephrology #magnesium
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
Causes of Hypokalemia ... gastrointestinal K loss • Renal ... Renal tubular acidosis ... syndrome, Congenital adrenal ... #nephrology #potassium
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 Hypermagnesemia
Increased magnesium load
 - Magnesium-containing laxatives, antacids, or enemas
 - Treatment of pre-edampsia/eclampsia (mothers
Causes of Hypermagnesemia ... Rhabdomyolysis Increased renal ... hypocalciuric hypercalcemia ... Mineralocorticoid deficiency, adrenal ... #differential
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 ... #diagnosis #nephrology ... #Causes #hypomg
Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia: 
 • Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,
Hyporeflexia: • Hypercalcemia ... , Hypermagnesemia ... #differential # ... diagnosis #table ... #neurology
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Hypokalemia - Differential ... Mineralocorticoid excess - Renal ... - Polyuria - Hypomagnesemia ... Low #Potassium #Table ... Classification #Causes
Hypokalemia Differential Diagnosis Algorithm

Low intake 
• poor oral intake 

Renal loss 
• Medication 
• Hypomagnesemia 
•
Hypokalemia Differential ... oral intake Renal ... Medication • Hypomagnesemia ... Nonreabsorbable anions • Renal ... Diagnosis #Algorithm #Causes
Causes of Hypomagnesemia - Differential Diagnosis Algorithm
GI LOSS - FeMg < 2-2.5% or 24h Urine Mg
Causes of Hypomagnesemia ... - Differential ... Malabsorption RENAL ... Diuretics • Hypercalcemia-PTH ... #Differential #
Approach to Hypomagnesemia 

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