16 results
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Medications - Loop ... - Hypokalemia ... Differential #Diagnosis #Low ... Magnesium #Table #Classification ... #Causes #Workup
Causes of Hypomagnesemia - Differential Diagnosis Algorithm
GI LOSS - FeMg < 2-2.5% or 24h Urine Mg
Causes of Hypomagnesemia ... Differential Diagnosis Algorithm ... Urine Mg > 10g • Loop ... DiureticsHypercalcemia-PTH ... #Magnesium #Low
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
Causes of Hypokalemia ... Clinicians should also look ... Renal K loss • Hypomagnesemia-induced ... Post-hypercapnia • Diuretics ... Hyperaldosteronism: malignant
Hypokalemia Differential Diagnosis Algorithm

Low intake 
• poor oral intake 

Renal loss 
• Medication 
• Hypomagnesemia 
•
Diagnosis Algorithm ... Low intake ... Medication • Hypomagnesemia ... • Osmotic diuresis ... #Causes #Classification
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Diagnosis Algorithm ... High Aldosterone: Malignant ... • HTN Absent: Loop ... and thiazide diuretics ... #causes #potassium
Causes of Metabolic Alkalosis - Differential Diagnosis Algorithm
GI Losses - Gastric
 • Vomiting
 • NG suction
GI
Causes of Metabolic ... tubular transport • Diuretics ... (loop/thiazide) ... • Hypomagnesemia ... Aldosterone • Malignant
Treatment algorithm for malignancy-associated hypercalcemia.
Hypercalcemia
 - Renal Failure → Dialysis with low Ca++ bath
Aggressive IV hydration
Treatment algorithm ... Dialysis with low ... Volume Overload → Loop ... diuretic IV Bisphosphonate ... Calcitonin Refractory Cases
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Urinary Losses - Diuretics ... - Polyuria - Hypomagnesemia ... Differential #Diagnosis #Low ... Potassium #Table #Classification ... #Causes
Metabolic Alkalosis - Differential Diagnosis Algorithm - Urinary Chloride
 • Cl- responsive metabolic alkalosis
Differential Diagnosis Algorithm ... Remote use of loop ... - Normal/low ... Gitelman syndrome, Hypomagnesemia ... #causes #urinary
Hypokalemia Differential Diagnosis Algorithm
Hypertensive:
 • High Al, Low R - Primary aldosteronism
 • High Al, High
Hypokalemia Differential ... Diagnosis Algorithm ... Hyperaldosteronism: malignant ... >20 mEq/24 h - Diuretics ... #nephrology #causes