9 results
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
= (urine magnesium ... )/ [0.7 (serum magnesium ... differential #diagnosis #causes ... #nephrology #magnesium ... #low
Hypomagnesemia - Differential Diagnosis
Renal Causes of Hypomagnesemia - Familial:
Bartter syndrome and Gitelman syndrome, Isolated recessive hypomagnesemia,
Diagnosis Renal Causes ... hypomagnesemia Renal Causes ... differential #diagnosis #causes ... #nephrology #magnesium ... #low
Hyponatremia - Differential Diagnosis Algorithm
ADH Independent:
 • Tea and Toast Syndrome, Beer Potomania - Low solute
Beer Potomania - Low ... • Euvolemic - Hypothyroidism ... Diagnosis #Algorithm #causes ... #nephrology
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
Causes of Hypomagnesemia ... hormone secretion, Hyperthyroidism ... Hypomagnesemia #Causes ... differential #diagnosis #nephrology ... #magnesium #low
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
potassium(K) & magnesium ... wasting from other causes ... consumption • Low ... differential #potassium #nephrology ... #low
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
time you have a case ... can be high or low ... Uosm), Hypothyroidism ... Primary polydipsia), Low ... table #sodium #nephrology
Hypermagnesemia - Diagnosis and Management

Hypermagnesemia is a serum magnesium concentration > 2.6 mg/dL.
Symptoms include hyporeflexia, hypotension,
mortality in ICU Causes ... • Increased magnesium ... hypercalcemia, Hypothyroidism ... helpful in severe cases ... #nephrology
Causes of Hypokalemia - Differential Diagnosis Algorithm
Decreased intake (rare cause in isolation)
GI loss - Urine loss
Causes of Hypokalemia ... Decreased intake (rare cause ... Gittelman's syndrome • Magnesium ... artery stenosis Low ... #Hypokalemia #Nephrology
Hyponatremia - Differential Algorithm
Isotonic Hyponatremia: Hyperlipidemia, Hyperproteinemia, Recent TURP
Hypotonic Hyponatremia: 
 • Hypovolemia: Diuretics/Nephropathies, Vomiting, Diarrhea,
Renal Failure, Hypothyroidism ... Algorithm #diagnosis #causes ... #nephrology #sodium ... #low