17 results
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
poor intake, Gl loss ... loss if renal function ... Hypomagnesemia #algorithm ... #differential # ... diagnosis #causes
Anosmia / Smell Dysfunction - Differential Diagnosis Algorithm
Nasal Obstruction/ URTI:
 • Septal Deviation
 • Allergic Rhinitis
Dysfunction - Differential ... Diagnosis Algorithm ... #Dysfunction #Loss ... #Differential # ... #Causes
Hypermagnesemia - Etiologies by Mechanism
Renal Failure 
Excessive Mg Administration 
 - Massive PO intake
intake - Magnesium ... Hypermagnesemia #Differential ... Diagnosis #High #Magnesium ... #Table #Causes ... #Management
Causes of Hypomagnesemia - Differential Diagnosis Algorithm
GI LOSS - FeMg < 2-2.5% or 24h Urine Mg
- Differential ... Diagnosis Algorithm ... GI LOSS - FeMg ... Hypomagnesemia #Magnesium ... #Low #Causes #Differential
Causes of Post-Partum Hemorrhage - Differential Diagnosis Algorithm
Blood Loss: >500mL post vaginal delivery OR >1000 mL
Causes of Post-Partum ... Hemorrhage - Differential ... Diagnosis Algorithm ... Blood Loss: >500mL ... e.g. nifedipine, magnesium
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
/ IBD Renal Loses ... Hypomagnesemia #Differential ... Diagnosis #Low #Magnesium ... #Table #Classification ... #Causes #Workup
Dizziness and Vertigo Algorithm
Presyncope:
 • Feels "faint" or like they are going to "pass out"
 •
Dizziness and Vertigo Algorithm ... Associated with loss ... Associated with nausea ... #dizzy #differential ... diagnosis #neurology #management
Causes of Hypokalemia - Differential Diagnosis Algorithm
Decreased intake (rare cause in isolation)
GI loss - Urine loss
- Differential ... Diagnosis Algorithm ... isolation) GI loss ... - Urine loss <20mmol ... Gittelman's syndrome • Magnesium
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
• Most common cause ... unexplained weight loss ... Lung Abscess Differential ... Abscess #pulmonary #differential ... #causes #management
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
time you have a case ... normal volume-based algorithm ... , Renal Sodium loss ... #Hyponatremia #differential ... #diagnosis #table