16 results
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Loop and thiazide diuretics ... - Osmotic diuresis ... Post-obstructive diuresis ... - Gitelman ... #Magnesium #Table
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis ... Workup Algorithm ... • Hypovolemic: Diuretics ... Diagnosis #Workup ... #Algorithm #nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
- Differential ... Diagnosis Algorithm ... losses, Diuretic ... Ketonuria, Osmotic diuresis ... Diagnosis #Algorithm
Gitelman Syndrome Overview

What?
• Inherited (AR) hypokalemic salt-losing tubulopathies affecting the thiazide-sensitive sodium chloride cotransporter
• Gitelman's syndrome
Gitelman Syndrome ... with thiazide diuretic ... Surreptitious diuretic ... #Gitelman #Syndrome ... #diagnosis #nephrology
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Hypokalemia - Differential ... Diagnosis Algorithm ... Loop and thiazide diuretics ... , Gitelman syndrom ... Diagnosis #Algorithm
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
Sodium loss (diuretics ... deficiency, Post-AKI diuresis ... (AKI, Post-AKI diuresis ... diagnosis #table ... #sodium #nephrology
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Hypernatremia Diagnosis ... Repeat the sodium ... volume loss - diuretics ... #Diagnosis #Workup ... #Algorithm #Nephrology
Hypomagnesemia - Differential Diagnosis
Renal Causes of Hypomagnesemia - Familial:
Bartter syndrome and Gitelman syndrome, Isolated recessive hypomagnesemia,
Diagnosis Renal ... and Gitelman syndrome ... with secondary, hypocalcemia ... transplant, Diuretic ... #nephrology #magnesium
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Diagnosis Algorithm ... GI losses • Renal ... especially thiazide diuretics ... #Nephrology #Differential ... #Diagnosis #Algorithm
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Diagnosis Algorithm ... GI losses • Renal ... especially thiazide diuretics ... #Nephrology #Differential ... #Diagnosis #Algorithm