Dr. Michael Chew @mchew85
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GrepMed Gastroenterology-Hepatology Editor, Academic Hospitalist UC Davis Medical Center Internal Medicine, Yale Gastroenterology Fellow '22
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Gastrointestinal Causes of Iron Deficiency Anemia
 • Mass lesions: Carcinoma, Large polyps
 • Inflammatory: Reflux esophagitis,
Gastrointestinal Causes of Iron ... Deficiency Anemia ... Gastrointestinal #Iron ... #Deficiency #Anemia ... #Causes #differential
Gastrointestinal Evaluation of Iron Deficiency Anemia
In patients with anemia, diagnose iron deficiency if:
 • Ferritin <
Evaluation of Iron ... Deficiency Anemia ... anemia, diagnose iron ... deficiency if: ... #Deficiency #Anemia
Causes of Severe Acute Liver Injury
 - Ichemic hepatitis
 - Acute biliary obstruction
 - Drug-Induced liver
-1 antitrypsin deficiency ... Acute #Causes #Differential
Common Etiologies of Cirrhosis

Inflammation

 - Hepatitis B (15 percent)

 - Hepatitis C (47 percent)

 - Schistosomiasis
α1-antitrypsin deficiency ... #Diagnosis #Differential
Causes of Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
Transcobalamin II deficiency ... #VitaminB12 #deficiency ... low #cobalamin #differential
Algorithm regarding the diagnosis and treatment of Hereditary Hemochromatosis HH. 

Step 1: In the patient with
causes of elevated iron ... other causes of iron ... ; HIC, hepatic iron ... TS, transferrin-iron
5 D's Mnemonic for Causes of Iron Deficiency Anemia (IDA)
Diet - lacking iron, vitamin C, too
for Causes of Iron ... Deficiency Anemia ... Diet - lacking iron ... much tea blocking iron ... #Deficiency #Anemia
Portal Hypertension Differential

#Diagnosis #Hepatology #Differential #PortalHypertension #PortalHTN #Prehepatic #Posthepatic #Intrahepatic
Portal Hypertension Differential ... Diagnosis #Hepatology #Differential
An Approach to Jaundice - Differential Diagnosis

- Increased Production (Prehepatic)
- Decreased Clearance (Intrahepatic + Posthepatic)

Dr. Eric
to Jaundice - Differential ... #Jaundice #Differential
Non-invasive biomarkers for excessive alcohol use
Acute Alcohol Use Biomarkers:
 - Ethanol
 - Ethyl Glucuronide (EtG) and
- Carbohydrate deficient