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Algorithm for the Evaluation of Chronic Diarrhea (< 7 days)
Exclude:
1. Causes of acute diarrhea
2. Lactose intolerance
3.
Causes of acute ... diarrhea 2. ... Medications 7. ... Systemic disease ... workup #diagnosis #differential
Classification, Differential Diagnosis, and Features of Hyponatremia According to Volume Status 

Hypervolemic hypernatremia 
 - CHF
Classification, Differential ... syndrome - Acute ... chronic kidney disease ... Vomiting - Diarrhea ... Classification #Differential
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
Hyponatremia - Differential ... losses, Vomiting, Diarrhea ... UNa > 20: • Acute ... #Hyponatremia #Differential ... Algorithm #Causes #nephrology
Causes of Acute Kidney Injury ( AKI ) - Prerenal, Renal, and Postrenal

PRE-RENAL 
Impaired perfusion: 
•
Causes of Acute ... • Inflammatory disease ... #Diagnosis #Acute ... Postrenal #Failure #Differential ... #Nephrology
Causes of Hypomagnesemia
Redistribution:
 - IV glucose
 - Correction of diabetic ketoacidosis
 - IV hyperalimentation
 - Refeeding
starvation - Acute ... biliary fistula - Diarrhea ... Tubulointerstitial renal disease ... Causes #diagnosis #differential ... #medications #drugs
Muscarinic Receptor Agonists and Antagonists 
Muscarinic Receptor Agonists
Methacholine
 • Diagnosis of bronchial airway
Carbachol
 • Glaucorna (topical
Atropine • Acute ... • Peptic ulcer disease ... hyoscyamine • Diarrhea-predominant ... • Parkinson disease ... #Antagonists #Medications
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
after starvation, Acute ... biliary fistula, Diarrhea ... Tubulointerstitial renal disease ... Hypomagnesemia #Causes #differential ... #diagnosis #nephrology
Causes of Peripheral and Central Vertigo
PERIPHERAL VERTIGO
1. Benign paroxysmal positional vertigo (BPPV) - Short-lived (typically less
Méniére's disease ... course of the disease ... Disease onset usually ... Vertigo #Causes #differential ... #diagnosis #neurology
Diagnostic Algorithm for Dizziness and Vertigo
Peripheral Vertigo:
 • Attacks: Sudden, severe, can last anywhere from seconds
No auditory symptoms ... test Méniére's disease ... Long symptom-free ... Vertigo #Algorithm #differential ... #diagnosis #neurology
Causes of High-anion Gap and Non-anion Gap Metabolic Acidosis
Causes of High-anion Gap Acidosis:
 • Lactic acidosis
Renal failure (acute ... Diarrhea B. ... progressive kidney disease ... Metabolic #Acidosis #differential ... diagnosis #causes #nephrology