23 results
Hyponatremia - Differential Diagnosis by Mechanism
Decr Blood Pressure (“Decr Effective Circulating Volume”) 
 - Volume depletion
- Malignancy (e.g ... CNS pathology (e.g ... hemorrhage) - Pulmonary ... pathology (e.g. ... #Table #Causes
Hypermagnesemia - Etiologies by Mechanism
Renal Failure 
Excessive Mg Administration 
 - Massive PO intake
by Mechanism Renal ... IV Mg infusion (e.g ... #Differential #Diagnosis ... High #Magnesium #Table ... #Causes #Management
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
• Drugs • Pulmonary ... GI losses • Renal ... Uosm < 100 mmol/kg ... #Hyponatremia #Nephrology ... #Algorithm #Causes
Diffuse Acute Abdominal Pain (<72 hours) - Differential Diagnostic Algorithm
Look for surgical abdomen
Upper quadrant: R/O cardiac,
Algorithm Look ... : R/O cardiac, pulmonary ... , renal, musculoskeletal ... Metabolic disease (e.g ... #Algorithm
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
• Drugs • Pulmonary ... GI losses • Renal ... Uosm < 100 mmol/kg ... #Hyponatremia #Nephrology ... #Algorithm #Causes
Causes of Fatigue - Differential Diagnosis Algorithm
Endocrine
 • Hypo/Hyperthyroidism
 • Diabetes
 • Pituitary Insufficiency
 • Adrenal
Causes of Fatigue ... Metabolic • Renal ... Chronic Obstructive Pulmonary ... • Drug Abuse (e.g ... #Algorithm #causes
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Control rate (e.g ... Treat underlying cause ... Control rate (e.g ... Tachycardia #Treatment #management ... #cardiology #algorithm
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
Causes of Polyuria ... concentration (e.g ... Recovery from Acute Renal ... #Polyuria #Nephrology ... #Algorithm #Causes
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Pulmonary Renal ... recent DAN) • EMG ... Goodpasture's cause ... hematuria, RBC casts ... #management #treatment
Erythrocytosis - Polycythemia Differential Diagnosis Algorithm

Elevated Hemoglobin:
 • Males: Hb > 16.5 g/dL/HCT ≥ 49%
 •
Algorithm Elevated ... Polycythemia - Acquired Causes ... Hypoxia-driven: Cardiac/pulmonary ... Hypoxia-independent: Post-renal ... Paraneoplastic (e.g