10 results
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis ... Workup Algorithm ... 1) Check Urine ... #Differential # ... Algorithm #nephrology #sodium
Oncologic Emergencies - Differential Diagnosis Framework

HEMATOLOGIC ONCOLOGIC EMERGENCIES:
Hyperviscosity Syndrome:
 • Spontaneous bleeding
 • Shortness of breath
- Differential ... renal failure • Hypocalcemia ... Vomiting, decreased urine ... coma SIADH: • Hyponatremia ... #differential #
Etiologies of Hypernatremia - Differential Diagnosis
GI losses / Insensible losses
Sodium Overload
Transcellular Movement of Water
Central Diabetes Insipidus
Etiologies of Hypernatremia ... - Differential ... Insensible losses Sodium ... in kidneys) - Medications ... hypercalcemia - Chronic hypokalemia
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
volume-based algorithm Urine ... : SIADH, Renal Sodium ... Present (Uosm ≥100): Hypovolemia ... #differential # ... diagnosis #table #sodium
Hyponatremia (<135 mEq/L) is a common electrolyte abnormality caused by an excess of total body water
Hyponatremia (<135 ... and urine osmolality ... helps to differentiate ... Measured urine sodium ... #RAAS #Hypovolemia
Hyponatremia - Diagnosis and Treatment
Hyponatremia is usually caused by the inability to excrete water normally.
3 questions to work ... approach to the differential ... Measure urine osmolality ... #Differential # ... management #nephrology #sodium
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
Medications that ... Drug Tests Urine ... Motrin) • Naproxen sodium ... #drug #tests #differential ... #diagnosis #toxicology
Primary Polydipsia
Definition: Excessive volitional water intake
Epidemiology:
 • 6-20% of patients with psychiatric disorders - Most commonly
• Symptomatic hyponatremia ... diabetes insipidus Differential ... intoxication Initial Workup ... Osm, Serum Sodium ... , Urine Sodium
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
Hypertension - Differential ... (correction of hypokalemia ... Oral sodium loading ... test (with 24-h urine ... Causes #Screening #Workup
Hyponatremia Differential Diagnosis Algorithm in Cancer
UOsm ≥ 100 mOsm/kg = Urine is inappropriately concentrated for hypotonic
Hyponatremia Differential ... 100 mOsm/kg = Urine ... appropriate • Hypovolemia ... #Differential # ... algorithm #nephrology #oncology