31 results
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid 
ADH promotes Urea/uric acid excretion along with water
water retention 1) Serum ... 4) Serum Uric Acid ... Acid → renal salt wasting ... By Rachel Stern ... Diagnosis #Algorithm #nephrology
Fractional Excretion of Sodium - FENa
Fractional Excretion of Sodium (FENa) = (Urine Na+ x Serum Cr)
Fractional Excretion of Sodium ... Fractional Excretion of Sodium ... = (Urine Na+ x Serum ... Cr) / (Serum Na ... #nephrology #calculation
True Hyponatremia Differential Algorithm

Instead (or in addition) of volume status examination, check urine sodium and serum
examination, check urine sodium ... and serum uric ... acid: - Urine sodium ... hyponatremia - Urine sodium ... Algorithm #Diagnosis #Nephrology
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Cerebral salt wasting ... Euvolemic, Serum ... Hypervolemic, Serum ... algorithm #diagnosis #sodium ... #low #nephrology
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
Hematuria Workup ... mimics, repeat testing ... → Refer to Nephrology ... cystoscopy • Refer to Nephrology ... Diagnosis #Algorithm #Workup
Hyponatremia Differential Diagnosis Table

 • Step 1: Correct for hyperglycemia. Corrected Na = [(glucose - 100)/
repeat BMP • Serum ... Diagnosis #Table #nephrology ... #sodium
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Diabetes Insipidus Workup ... Management #Algorithm #Sodium ... #nephrology #insipidus
Acute Kidney Injury - AKI Workup Algorithm and Differential Diagnosis
Baseline Investigations: full blood count with differential,
Kidney Injury - AKI Workup ... ultrasonography, serum ... myoglobin • Myeloma: serum ... #Injury #AKI #Workup ... Differential #Diagnosis #nephrology
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Diagnosis and Workup ... Repeat the sodium ... Hypernatremia #Diagnosis #Workup ... #Algorithm #Nephrology
Cerebral Salt Wasting vs SIADH - Pathophysiology 
1) Neurological event
2) Sodium loss from tubules
3) Naturiesis →
Cerebral Salt Wasting ... Neurological event 2) Sodium ... Pathophysiology #diagnosis #nephrology