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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diagnosis differential gastroenterology causes hepatology algorithm management anemia bowel cirrhosis clinical ibs iron pathophysiology boerhaave criteria disorders egd endoscopy esophagus
Ileal Pouch Disorders - Differential Diagnosis • Surgical/Mechanical: Anastomotic leak, Pelvic sepsis, Sinus, Fistula, Strictures, Efferent
Efferent limb syndrome ... Afferent limb syndrome ... • Functional: Irritable ... pouch syndrome, ... loss, Vit D/B12 deficiency
Irritable Bowel Syndrome (IBS) - Pathophysiology, Diagnosis and Management Algorithm Risk factors: Previous acute enteric infection, Female
Irritable Bowel ... Syndrome (IBS) - ... functional somatic syndromes ... Pregabalin #IBS #Irritable ... #Bowel #Syndrome
Gastrointestinal Causes of Iron Deficiency Anemia • Mass lesions: Carcinoma, Large polyps • Inflammatory: Reflux esophagitis,
Causes of Iron Deficiency ... rubber bleb nevus syndrome ... Gastrointestinal #Iron #Deficiency
Common Etiologies of Cirrhosis Inflammation - Hepatitis B (15 percent) - Hepatitis C (47 percent) - Schistosomiasis
α1-antitrypsin deficiency ... disease (Budd-Chiari syndrome
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 Causes of Low Vitamin B12 Levels Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people Autoimmune
and Sjögren's syndrome ... Transcobalamin II deficiency ... #VitaminB12 #deficiency
Causes of Small Bowel Bleeding - Differential Diagnosis Common Causes: • Under age 40 years: Inflammatory Bowel
rubber bleb nevus syndrome ... Osler-Weber-Rendu syndrome ... Plummer-Vinson syndrome ... Ehlers-Danlos syndrome ... , Inherited syndromes
Gastrointestinal Evaluation of Iron Deficiency Anemia In patients with anemia, diagnose iron deficiency if: • Ferritin <
Evaluation of Iron Deficiency ... diagnose iron deficiency ... management #Iron #Deficiency
Causes of Severe Acute Liver Injury - Ichemic hepatitis - Acute biliary obstruction - Drug-Induced liver
-1 antitrypsin deficiency
Gallstone Diseases 1. Asymptomatic Stones 75% 2. Biliary Pain 20% 3. Acute Cholecystitis 10% 4. Mirizzi's Syndrome < 0.1% 5. Cholangitis/
Mirizzi's Syndrome ... Fistula/Bouveret's Syndrome
Carcinoid Syndrome - Pathophysiology, Signs and Symptoms Symptoms: Flushing, diarrhea, palpitations, bronchospasm Complications: Carcinoid heart, mesenteric fibrosis, pellagra,
Carcinoid Syndrome ... #Carcinoid #Syndrome
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