27 results
Hypomagnesemia - Differential Diagnosis
Renal Causes of Hypomagnesemia - Familial:
Bartter syndrome and Gitelman syndrome, Isolated recessive hypomagnesemia,
Familial: Bartter syndrome ... and Gitelman syndrome ... Renal Causes of ... diagnosis #causes #nephrology ... #magnesium #low
Approach to Hypomagnesemia 

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

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Hypomagnesemia - ... diarrhea / IBD Renal ... - Familial renal ... Differential #Diagnosis #Low ... #Magnesium #Table
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
Causes of Hypomagnesemia ... after starvation, Acute ... steatorrhea) • Renal ... differential #diagnosis #nephrology ... #magnesium #low
Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia: 
 • Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,
Polyneuropathy, Acute ... stroke, Acute spinal ... Guillain-Barré syndrome ... differential #diagnosis #table ... #neurology
Drugs associated with hypokalemia and hypomagnesemia

Hypokalemia
- Shift from extracellular fluid to intracellular fluid compartment
  -
hypokalemia and hypomagnesemia ... overdose) - Sodium ... pump inhibitor - Renal ... Fanconi syndrome ... differential #diagnosis #nephrology
Hypocalcemia Workup - Differential Diagnosis Algorithm
 • Low Magnesium, High Magnesium - Functional Hypoparathyroidism
 • High
Magnesium, High ... Magnesium - Functional ... Hyperphosphatemia, Acute ... metastases, Hungry bone syndrome ... Diagnosis #Algorithm #nephrology
Mechanisms of nephron damage in cardiorenal syndrome
 • Increased renal interstitial pressure
 • Hypoperfusion
 • Reduced
in cardiorenal syndrome ... • Increased renal ... blood flow • ... hypertrophy • Sodium ... pathophysiology #nephrology
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Na <20: Extra-renal ... Hypothyroidism, Low ... Cirrhosis, Nephrotic syndrome ... algorithm #diagnosis #sodium ... #low #nephrology
Causes of Metabolic Alkalosis - Differential Diagnosis Algorithm
GI Losses - Gastric
 • Vomiting
 • NG suction
GI
Chloridorrhea Renal ... • Penicillins Renal ... loop/thiazide) • Hypomagnesemia ... Licorice • Liddle's Syndrome ... MetabolicAlkalosis #NonGap #Nephrology