9 results
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
= (urine magnesium ... Hypomagnesemia #algorithm ... #differential # ... diagnosis #causes #nephrology ... #magnesium #low
Causes of Hypomagnesemia - Differential Diagnosis Algorithm
GI LOSS - FeMg < 2-2.5% or 24h Urine Mg
Diagnosis Algorithm ... 2-2.5% or 24h Urine ... Mg < 10g • Diarrhea ... Hypomagnesemia #Magnesium ... #Low #Causes #Differential
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
potassium(K) & magnesium ... Laxative use • Diarrhea ... #differential # ... potassium #nephrology ... #low
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Diagnosis Algorithm ... mannitol, glucosuria Low ... Urine Osmolality ... loss • Watery Diarrhea ... Hypernatremia #Nephrology
Algorithm for patients with hypokalemia on the basis of the potassium-to-creatinine ratio in the urine
Urine K+
Algorithm for patients ... Gastrointestinal loss: Diarrhea ... #potassium #differential ... #algorithm #diagnosis ... #nephrology
Metabolic Alkalosis - Urinary Chloride Algorithm
Cl- responsive metabolic alkalosis
 • Kidney loss of Cl-
Urinary Chloride Algorithm ... Congenital chloride diarrhea ... alkalosis • Normal/low ... #Algorithm #nephrology ... #differential #
Causes of Hypokalemia - Differential Diagnosis Algorithm
Decreased intake (rare cause in isolation)
GI loss - Urine loss
Diagnosis Algorithm ... isolation) GI loss - Urine ... <20mmol/d • Diarrhea ... Gittelman's syndrome • Magnesium ... #Hypokalemia #Nephrology
Causes of Non-Gap Metabolic Acidosis - Differential Diagnosis Algorithm
Normal Anion Gap (<14) (Loss of Bicarbonate) -
Diagnosis Algorithm ... Loss (Negative urine ... net charge) • Diarrhea ... Cell Problem - Low ... MetabolicAcidosis #NonGap #Nephrology
Gitelman Syndrome Overview

What?
• Inherited (AR) hypokalemic salt-losing tubulopathies affecting the thiazide-sensitive sodium chloride cotransporter
• Gitelman's syndrome
alkalosis • Normal or low ... Hypocalciuria (spot urine ... ratio 0.5%) Differential ... Congenital chloride diarrhea ... • Potassium • Magnesium