Dr. Gerald Diaz @GeraldMD
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Board Certified Internal Medicine Hospitalist, GrepMed Editor in Chief πŸ‡΅πŸ‡­ πŸ‡ΊπŸ‡Έ - Sign up for an account to like, bookmark and upload images to contribute to our community platform. Follow us on IG: https://www.instagram.com/grepmed/ | Twitter: https://twitter.com/grepmeded/
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Causes of Fat Malabsorption - Differential Diagnosis
Biliary Duct Obstruction
 β€’ Autoimmuneβ€” PBC, PSC
 β€’ Infectionβ€” liver
Causes of Fat Malabsorption ... choledocho/ithiasis Intestinal ... Celiac disease β€’ IBD ... length β€’ Short bowel ... Differential #Diagnosis #Causes
Upper and Lower Causes of GI Bleed
Upper:
 β€’ Esophagus: Tear (Mallory Weiss, Boerhaave syndrome), Variceal, Esophagitis,
Upper and Lower Causes ... fistula Lower: β€’ Bowel ... colitis, UC/Chrons (IBD ... differential #diagnosis #Causes ... #algorithm
Eosinophil Disorders Testing Algorithm
INDICATIONS FOR TESTING:
 β€’ Peripheral blood eosinophilia/hypereosinophilia uncovered incidentally during medical evaluation or
Eosinophil Disorders ... Testing Algorithm ... during medical evaluation ... for secondary causes ... eosinophilia (common causes
TABLE 2. Irritable bowel syndrome (IBS) sub-classifications
lBS-diarrhoea (IBS-D)
 - >25% loose or watery stools; <25% hard
Irritable bowel ... lBS-diarrhoea (IBS-D ... (IBS-C) - >25% ... of incomplete evacuation ... #Classes #Diagnosis
Vitamin B12 (Cobalamin) Deficiency
Etiology:
 β€’ Vit B12 - aka cobalamin. Present in foods derived from animal
β€’ Common Causes ... dysfunction, and/or disorders ... of small intestine ... diarrhea related to IBD ... total body stores Evaluation
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Differential Diagnosis: Causes ... starvation, diabetic) Causes ... Acetazolamide Causes ... Mineralocorticoid excess Causes ... - Salicylates Causes
UCSF COVID-19 Adult Clinical Evaluation Guide - Updated April 10 2020

Clinical Presentation
β€’ Fever: hospitalized pts but
Adult Clinical Evaluation ... Cardiac: multiple case ... Taste or smell disorder ... UCSF COVID-19 ID ... Guide #Diagnosis #Algorithm
Complications after Bariatric Surgery
Post Bariatric Intestinal Failure:
 β€’ Severe protein malnutrition after bariatric surgery
 β€’ More
Post Bariatric Intestinal ... bolus to the small bowel ... (N/V bloating, abd ... after RYGB β€’ Disorder ... Gastric bypass causes
Handlebar Traumatic Injury 
Young girl presents to you after low energy, helmeted bicycle accident. Her vitals
is sent to CT abd ... in over 80% of cases ... Can have intestinal ... injuries to the small bowel ... consultation, evaluation
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