11 results
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
- Differential Diagnosis ... Algorithm Hypernatremia ... diuresis (see Polyuria ... mannitol, glucosuria Low ... #Diagnosis #Algorithm
Algorithmic Approach to Acute Interstitial Nephritis
When to suspect AIN? (not sensitive)
 • AKI, AKD, rapidly progressive
Algorithmic Approach ... rapidly progressive CKD ... • UA: sterile pyuria ... #Algorithm #nephrology ... #diagnosis
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis ... Workup Algorithm ... • Euvolemic (Low ... #Workup #Algorithm ... #nephrology #sodium
True Hyponatremia Differential Algorithm

Instead (or in addition) of volume status examination, check urine sodium and serum
Differential Algorithm ... - Urine sodium low ... and uric acid low ... in euvolemic hyponatremia ... #Diagnosis #Nephrology
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
- Differential Diagnosis ... Algorithm Polyuria ... Urine Volume (>2ml/min ... Kidney • Nephrogenic ... #Diagnosis #Algorithm
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
- Differential Diagnosis ... Mannitol Defect in ... • Central Dl (Low ... injury, Tumor • Nephrogenic ... #Causes #nephrology
Causes of Chronic Kidney Disease - Differential Diagnosis Algorithm
Decreased kidney function (eGFR < 60 ml/min/1.73 m2)
- Differential Diagnosis ... Algorithm Decreased ... (eGFR < 60 ml/min ... hydronephrosis on U/S) • Reflux ... Hyperphosphatemia #CKD
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Diagnosis Algorithm ... Pain. ... always exclude: CKD ... #Algorithm #diagnosis ... #nephrology #sodium
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
and Myotomes Reflexes ... Equina Syndrome - Low ... , neurogenic claudication ... Dermatomes #Myotomes #diagnosis ... #neurology #sensory
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... restriction alone in ... can be high or low ... #differential #diagnosis ... table #sodium #nephrology