21 results
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Diagnosis and Workup ... Repeat the sodium ... liver failure • nephrotic ... syndrome • renal ... #Algorithm #Nephrology
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
failure, Cirrhosis, Nephrotic ... syndrome - ... > 30): SIADH, Medications ... #diagnosis #sodium ... #nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Syndrome of Inappropriate ... Pain/Post-op • Neurologic ... trauma • Drugs ... Cirrhosis • Nephrotic ... #Hyponatremia #Nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Syndrome of Inappropriate ... Pain/Post-op • Neurologic ... trauma • Drugs ... Cirrhosis • Nephrotic ... #Hyponatremia #Nephrology
Workup of Hypercalcemia - Differential Diagnosis Algorithm
High or Normal PTH:
 • Hyperparathyroidism: Parathyroid adenoma, Parathyroid hyperplasia,
Workup of Hypercalcemia ... Differential Diagnosis Algorithm ... Immobilization, Drugs ... disease, Viral Syndromes ... #Workup #nephrology
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis Workup ... Algorithm 1) ... , Cushing syndrome ... #Algorithm #nephrology ... #sodium
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Differential Diagnosis Algorithm ... CHF, cirrhosis, nephrotic ... syndrome) Euvolemic ... #diagnosis #nephrology ... #sodium
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
Differential Diagnosis Algorithm ... Hypothyroidism, Stress, Drugs ... , UNa < 20 • Nephrotic ... Differential #Diagnosis #Algorithm ... #Causes #nephrology
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
failure, Cirrhosis, Nephrotic ... syndrome • Urine ... #Hyponatremia #algorithm ... #diagnosis #sodium ... #low #nephrology
Drugs associated with hypokalemia and hypomagnesemia

Hypokalemia
- Shift from extracellular fluid to intracellular fluid compartment
  -
Drugs associated ... overdose) - Sodium ... renal Fanconi syndrome ... hypomagnesemia #Medications ... differential #diagnosis #nephrology