Medicine - GI Flashcards
When should AST/ALT be obtained in regards to Statin therapy?
BEFORE starting statins and then PRN
Gilbert’s Syndrome Etx
Dysfunctional conjugation of unconjugated bilirubin to Conjugated by UGT –> [⬆︎UnConjugated Bilirubin] worst w/[stress/virus/illness]
Crigler Najjar = WORST VERSION of this in which UGT is ABSENT!
Most Liver Dz has ALT > AST
What conditions involve [AST > ALT - 2:1 ratio]? -3
only a FEW…
- Fibrosis ADVANCED
- EtOH Hepatitis (Make a ToaSt to drinks)
- Wilson’s Dz
w/u for [Hepatitis / Alcoholic Liver Dz]-7
You’ve already gotten back Aminotransferases
**FIRST…REPEAT LIVER CHEMISTRIES!!!**
- Viral Hepatitis Serology
- [RUQ US]: Evaluates for Cirrhosis and biliary tree dz
- Iron studies: identifies hemochromatosis
- [PT/INR and Albumin]: Is liver making proteins
- HIV: often co-infected with HepC
- Lipid Panel: Eval for NASH/NAFLD
- HbA1C: Eval for NASH/NAFLD
Which bacteria are typically involved with Diverticulitis?-2
E.coli & Bacteroides Fragilis
Abx tx regimens for Diverticulitis-4
4 options
- PO: Augmentin
- [PO: Flagyl + Cipro]
- [PO: Flagyl + Bactrim]
- [IV: Flagyl + CefTriaxone]
What’s an effective way to determine if ascities is 2/2 Portal HTN Cirrhosis
SAAG = Serum to Ascites Albumin Gradient
(Serum Albumin - Ascites Albumin)
≥ 1.1 = Ascites from Portal HTN (Cirrhosis/Budd-Chiari)!
<1.1 = other cause (Ovarian CA,nephrOtic syndrome,TB, R HF)
Normal Range for ALT and AST is _____. What etx’s would cause Aminotransferases to be > 1000! -5
8-20;
Presentation for Autoimmune Hepatitis -3
“Tired w/ a Tan and Doesn’t Eat = Girls Best Dream!”
- Fatigue (most common)
- Jaundice
- Anorexia
What Labs support Autoimmune Hepatitis-5
- Anti-LKM (Liver/Kidney/Muscle)
- ANA
- Antismooth muscle
- ⬆︎ Immunoglobulins
- ⬆︎ [ALT & AST]
Note: The only way to diagnose AH is Biopsy!!
What is a GI Cocktail consist of-3
the LAMe GI Cocktail waitress
- Antacid
- Lidocaine
- Muscarinic R Blocker
- GERD indication
Low platelets may indicate _____(4)
- Cirrhosis
- [DIC on Sepsis]
- [SLE Antiphospholipid Syndrome]
- Hemetologic abnormality (HUS, TTP, ITP)
Platelet range = 150 - 450 K
Mngmnt for UnComplicated Pancreatitis - 3
IVF
Pain Mngmt
NPO
Most common causes of Upper GI Bleed -4
PEEM
PUD > Esophageal Varices > Esophageal Erosion > Mallary-Weis tear
Most common causes of Lower GI Bleed -5
Diverticulosis > [Colitis (Ischemic>IBD>Radiation)]> [Hemorrhoids/Anal Fissure] > Colon CA > [s/p polypectomy]
____ is the most common cause of Upper GI Bleed. Name the risk factors for developing this-9
PUD
The 3 types of Shock are Cardiogenic, Hypovolemic and Distributive
Which 3 sub-types make up Distributive Shock ; what’s unique about this type of shock?
Distributive = SAS
Sepsis / Anaphylaxis / Spinal
Distributive will have WARM extremities (others are cold)
What are causes of Biliary-related elevated ALP -3
- Cholestasis
- Liver infection (TB/CMV/MAC)
- Liver damage (CHF/EtOH cirrhosis)
You see a Jaundiced pt. What must his Total bilirubin at least be?
>2
[Dubin Johnson syndrome] and [Rotor Syndrome] etx
Inability to secrete Conjugated bile into Bile Duct
General Approach to Elevated ALP
[Primary Biliary Cirrhosis] etx
1st and 2nd symptom stages of [Primary Biliary Cirrhosis]
[Primary Biliary Cirrhosis] Dx and tx-2
[Primary Sclerosing Cholangitis] etx
[Primary Sclerosing Cholangitis] dx
ERCP beading pattern
MOD for [HFE mutation 1° Hemochromatosis]
HFE mutation –> Liver & Enterocytes falsely detecting low iron –> [1 and 2] –> [Liver Cirrhosis & HCC] AND BRONZED SKIN
- Liver DEC Hepcidin release —> [INC Ferroportin on Enterocytes basolaterally]–>INC iron absorption
- Enterocytes [INC Apical DMT1] –> ALSO INC iron absorption
Presents after 40 yo
FerriTin > 1000 usually indicates ____. What other lab values is found with this?
HEMOCHROMATOSIS ; [95% Transferrin Saturation]
Presents after 40 yo
Wilson’s Dz Etx
Wilson’s Dz Sx -4
Wilson’s Dz Tx
What is the most common cause of Cirrhosis and how is it diagnosed?
NASH! ; Liver Biopsy
NASH RF: Obesity, DM, Hyperlipidemia
Autoimmune hepatitis dx and tx-2
Dx = Biopsy
- prednisone
- azathioprine
Why is drinking alcohol in a pt with Hep C dangerous?
Hep C ⬆︎⬆︎⬆︎⬆︎ Liver damage from alcohol!!
How do you interpret positive Hep C serology?
Hep C Ab = exposure at some point
Hep C RNA titers = determines status (HIGH = chronically active vs negative = resolved)
A: Early signs of Hepatic Encephalopathy - 2
B: LATE signs of Hepatic Encephalopathy -3
A:
1A. Reversed sleep cycle (can’t sleep @ night, only during day)
2A. Personality changes
1B: Asterixis (flapping hands)
2B: Coma
3B: focal neuro signs
Hepatic Encephalopathy is caused by ⬆︎ NH3
Tx for Hepatic Encephalopathy and their MOA (2)
- Lactulose (converts NH3 –> NH4+ in colon - and ⬆︎peristalsis –> DIARRHEA)
- Rifaximin abx (⬇︎NH3 producing colonic bacteria)
Vaccinations for pts with Chronic Hepatitis -4
- Hep A (acute viral hepatits can –> Fulminant Liver failure!)
- Hep B (acute viral hepatits can –> Fulminant Liver failure!)
- Flu
- Pneumococcal
Why is Octreotide given for active Esophageal Varices Rupture
it vasoconstricts splanchnics –> ⬇︎pressure from splanchnics to the esophagus
Spontaneous Bacterial Peritonitis Etx ; Sx-4
Cirrhotic Immunosuppression –> Infection of ascitic fluid —> Hepatic Encephalpathy or [Type 1 Hepatorenal syndrome]! ;
- Diffuse Abd pain
- Fever
- AMS evidenced by Reitan trail connect the number test
- paralytic iLeus
These pts may NOT have peritoneal signs because it’s blunted by ascitic fluid! Fluid cx will show organisms with neutrophils>250
What are the purposes of Peritoneal fluid analysis in pt with ascities? -2
- Determine Cause
- Determine presence of Infection
Causes = Cirrhosis > [Ovarian CA=TB=nephrOtic syndrome=R HF]
Other than Cirrhosis, what are other causes of ascites? -4
- Ovarian CA
- nephrOtic syndrome
- TB
- R HF
These will have a SAAG < 1.1
You’ve just obtained Ascitic fluid from Cirrhosis pt
What labs should be ordered for this fluid AND why? -3
- Ascitic Albumin: Determine SAAG for cause!
- CBC w/diff: >250 PMN means Spontaneous Bacterial Peritonitis
- Gram stain and Culture:
Spontaneous Bacterial Peritonitis Tx -2
Cipro vs Norfloxacin
Indications for Liver Transplant -6
- Type 1 Hepatorenal syndrome
- Tx refractory Liver failure
- Decompensating Liver failure
- Acute Fulminant Liver Failure
- [Cirrhosis 2/2 HCV with MELD score > 10]
- [Cirrhosis 2/2 HCV s/p major complication of Portal HTN]
D-Lactic Acidosis is seen in pts with _____. Etx? CP-2
Short bowel syndrome; Unabsorbed Carbs are metabolized by intestinal bacterial –> D-lactic acid which is absorbed –> Confusion + Ataxia during carb loading
Wilson’s Dz Dx - 3
- Low Ceruloplasmin ( < 20 mg/dL) -ceruloplasmin binds to ⬆︎ free flaoting copper
- ⬆︎Urinary Copper
- Slit Lamp revealing Kayser Fleischer Rings
What are the most common biomarkers for unhealthy EtOH usage? - 6
- AST: ALT ratio ≥ 2:1
- ⬆︎GGT
- ⬆︎Carbohydrate-deficient Transferrin
- ⬆︎FerriTin
- Macrocytosis
- Pancytopenia
Why is Angiodysplasia also a cause of Upper GI bleed
it can occur anywhere in the GI tract BUT most commonly occurs in R Ascending Colon
RF: Aortic Stenosis, von willebrand disease, renal disease
In adults, what are the risk factors for developing Angiodysplasia - 3
This can occur ANYWHERE in the GI tract but most commonly occurs in R Ascending colon
- Aortic Stenosis (vW multimers are disrupted as they pass through turbulent space –> AVM)
- Von Willebran disease
- Renal disease
If a pediatric pt with hypertrophic pyloric stenosis has electrolyte abnormalitites, do you immediately go to surgery or correct electrolytes/hydration first?
Electrolytes/Hydration FIRST!
Dx = US
Dx for Celiac disease - 4
malabsorption sx + iron deficiency anemia = CELIAC!
Anti-TED (IgA or IgG)
TissueTransGlutaminase/Endomysial/DeaminatedGliadin
—> DUODENAL BX FOR CONFIRMATION (IgA test may result in false negative if concurrent IgA deficiency is present!)
look for wt loss, iron deficiency anemia and dermatitis herpetiformis (elbows, knees, butt, back) in these pts!
Why can’t US be used to diagnose Primary Biliary Cholangitis?
PBC involves Anti-mitochondrial abs attaching intrahepatic biliary duct ONLY. US can only see EXTRAhepatic
Other than complications from cholestasis, what other complications are associated with Primary Biliary Cholangitis? - 3
- HLD with Xanthelasma
- Metabolic bone disease
- Autoimmune thyroid disease
Although CXR in Boerhaave syndrome can show __(3)__, what is the confirmation dx?-2
Boerhaave = violent vomiting –> esophageal rupture
- uL pleural effusion +/- PTX
- pleural fluid high in amylase ( > 2500)
- widened mediastinum with emphysema
Confirmation dx = CT or [contrast esophagography with Gastrografin]
Complications of GERD - 3
- Barrett’s esophagus
- Erosive sophagitis
- Esophageal peptic strictures (circumferential narrowing)
Causes of Esophageal pepetic strictures (circumferential esophageal narrowing –> solid food dysphagia only) - 4
- GERD
- Radiation
- Systemic slcerosis
- Caustic ingestions
Characteristics for Carcinoid Syndrome - 10
Cardiac (Tricuspid Regurgitation)
Do not confuse with VIPoma which presents similarly but affects Pancreas while Carcinoid affects small intestine
[T or F] Screening Ammonia levels should be ordered on pts with cirrhosis with or without encephalopathy
FALSE - only order Ammonia if hepatic encephalopathy is suspected
Pt has cirrhosis with esophageal varices
What is the prophylactic mngmt for this pt? - 2
[General B Blockers (nadalol) OR Variceal ligation] –(if refractory)–> [TIPS-Transjugular intrahepatic portosystemic shunt]