19 results
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
Sodium loss (diuretics ... diuresis can be ... diuresis) RAAS ... #table #sodium ... #nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
losses, Diuretic ... and metabolic alkalosis ... Ketonuria, Osmotic diuresis ... , UNa < 20 • Nephrotic ... #nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Algorithm Syndrome ... Euvolemic; no physiologic ... GI losses • Renal ... especially thiazide diuretics ... #Diagnosis #Algorithm
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Algorithm Syndrome ... Euvolemic; no physiologic ... GI losses • Renal ... especially thiazide diuretics ... #Diagnosis #Algorithm
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Workup Algorithm ... • Euvolemic (Low ... • Hypovolemic: Diuretics ... osmotic (solute) diuresis ... #nephrology #sodium
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 ... syndromerenal ... #Algorithm #Nephrology
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting, NGT
Algorithm Volume ... Cl intake, Diuretics ... High Urine Cl-: Diuretics ... hyperaldosteronism • High PRA: Renal ... #Algorithm #nephrology
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
• Metabolic alkalosis ... • Diagnosis of ... syndromeHyponatremia ... #Diuresis #Nephrology ... #Medications #Table
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
syndrome - ... , Medications (diuretics ... Primary polydipsia, Low ... #Algorithm #diagnosis ... #sodium #nephrology
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
Algorithm Volume ... Cl intake, Diuretics ... High Urine Cl-: Diuretics ... hyperaldosteronism • High PRA: Renal ... #Algorithm #Nephrology