45 results
Hypomagnesemia - Differential Diagnosis
Renal Causes of Hypomagnesemia - Familial:
Bartter syndrome and Gitelman syndrome, Isolated recessive hypomagnesemia,
Differential Diagnosis Renal ... Renal Causes of ... Hypercalcemia, Post renal ... diagnosis #causes #nephrology ... #magnesium #low
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Hypomagnesemia - ... diarrhea / IBD Renal ... Differential #Diagnosis #Low ... #Magnesium #Table ... Classification #Causes #Workup
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 ... diagnosis #causes #nephrology ... #magnesium #low
Workup of Hypercalcemia - Differential Diagnosis Algorithm
High or Normal PTH:
 • Hyperparathyroidism: Parathyroid adenoma, Parathyroid hyperplasia,
Workup of Hypercalcemia ... Hypercalcemia Low ... PTHrP: - Low ... Diagnosis #Algorithm #Workup ... #nephrology #PTH
Hypocalcemia - Differential Diagnosis Algorithm - Low and High PTH
LOW PTH - Hypoparathyroid
 - Congenital (Pediatric)
and High PTH LOW ... • Infiltrative disease ... polyendocrinopathy • Hypomagnesemia ... bypass • Liver disease ... • Chronic Renal
Causes of Metabolic Alkalosis - Differential Diagnosis Algorithm
GI Losses - Gastric
 • Vomiting
 • NG suction
GI
Chloridorrhea Renal ... • Penicillins Renal ... loop/thiazide) • Hypomagnesemia ... aldosteronism Low ... MetabolicAlkalosis #NonGap #Nephrology
Causes of Hypocalcemia - Differential Diagnosis Algorithm
 • Extravascular: Pancreatitis, surgery, acute phosphate intake and renal
phosphate intake and renal ... Chronic Kidney Disease ... Hyperphosphatemia, Low ... contrast agents • Hypomagnesemia
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Mineralocorticoid excess - Renal ... - Polyuria - Hypomagnesemia ... Differential #Diagnosis #Low ... #Potassium #Table
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
Causes of Hypomagnesemia ... steatorrhea) • Renal ... disease • Drugs ... differential #diagnosis #nephrology ... #magnesium #low
Normal Anion-Gap Acidosis (NAGMA) - Differential Diagnosis Framework and Workup

NAGMA
- Chem, ABG or VBG
- Calculate Anion
Framework and Workup ... • Serum K low ... • Serum K: low ... Differential #Diagnosis #Workup ... #nephrology