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Gastroenterology > Fire Facts > Flashcards

Fire Facts Flashcards

1
Q

In cholestasis (biliary obstruction), infiltrative disorders, and bone disease, what serum market is elevated?

A

Alkaline phosphatase

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2
Q

What is the major artery that supplies the foregut?

A

Celiac trunk

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3
Q

What is the major artery that supplies the Hindgut?

A

Inferior mesenteric artery

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4
Q

What is the major artery that supplies the midgut?

A

Superior mesenteric artery

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5
Q 
Structures and corresponding anatomy: 
-Celiac trunk
-Inferior phrenic
-Superior suprarrenal 
-Middle suprarrenal 
Where is it located (vertebrae landmark)?
A

T12

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6
Q 
Structures and corresponding anatomy: 
-Superior mesenteric artery
-Inferior suprarrenal 
-renal 
Where is it located (vertebrae landmark)?
A

L1

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7
Q

Structures and corresponding anatomy:
-Gonadal artery
Where is it located (vertebrae landmark)?

A

L2

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8
Q

Structures and corresponding anatomy:
-Inferior mesenteric artery
Where is it located (vertebrae landmark)?

A

L3

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9
Q

Structures and corresponding anatomy:
-Bifurcation of iliac arteries
Where is it located (vertebrae landmark)?

A

L4

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10
Q

Structures and corresponding anatomy:
-Medial sacral artery
Where is it located (vertebrae landmark)?

A

L5

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11
Q

What cells are responsible for hepatic fibrosis??

A

Hepatic Stellate (Ito) cells

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12
Q

Where in the liver are Kupffer cells located?

A

In the sinusoids that drain to the central vein!!!

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13
Q

How does bile flow… flow???

A

Opposite of the direction of hepatic artery and portal vein flow! (Opposite of blood flow)

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14
Q

Px presents with a bulge/protrusion inferior to epigastric vessels, but lateral to the rectus abdominis. What is being described??

A

Direct inguinal hernia

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15
Q

Px presents with a bulge/protrusion lateral to epigastric vessels, and covered by all 3 layers of spermatic fascia. What is being described??

A

Indirect inguinal hernia

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16
Q

Px presents with a bulge/protrusion below inguinal ligament through femoral canal below and lateral to pubic tubercle. What is being described??

A

Femoral hernia

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17
Q

Where is B12 absorbed??

A

Terminal ilium with bile salts, and requires intrinsic factor.

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18
Q

What is the origin of 2* Achalasia? AKA-Pseudoachalasia? Or Extraesophageal malignancies (mass effect, or paraneoplastic)

A

Chagas’ disease- T. cruzi

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19
Q 
Structures and corresponding anatomy: 
-Inferior phrenic
-Superior suprarrenal 
-Middle suprarrenal 
Where is it located (vertebrae landmark)?
A

T12

20
Q

Loss of NO secretion in the GI tract results in what??

A

Increased LES tone, thus Acalasia

21
Q

What is the triad of Plummer-Vinson Sd, and what are they at increased risk for?

A

Dysphagia, Iron deficiency, and esophageal webs.

Increased risk for esophageal squamous cell carcinoma

22
Q

First thing that should come to mind when you read failure to pass meconium within 48hrs of birth… associated with mutation in what?

A

Hirschsprung disease

RET mutation

23
Q

This serum marker is elevated in various liver and biliary diseases, but not in bone disease; associated with alcohol use.

A

Gamma-glutamyl transpeptidase

24
Q

This marker is key in bio synthetic function, and is decreased in advanced liver disease. What is it?

A

Albumin

25
Q

Prothrombin time is increased in what GI pathology?

A 
Advanced liver disease
Portal hypertension (splenomegaly/splenic sequestration).
26
Q 
Rate fatal childhood hepatic encephalopathy. Findings: mitochondrial abnormalities, fatty liver, hypoglycemia, vomiting, hepatomegaly, and coma. Associated with viral infection (VZV and influenza) that has been treated with ASA. 
-Steatosis of the liver/hepatocytes
-Hypoglycemia/hepatomegaly
-Viral infection
-Coma
-Encephalopathy 
What disease is at hand?
A

Reye Syndrome

27
Q

Histology shows fatty infiltration of hepatocytes —> cellular ballooning. May cause cirrhosis and HCC independently of alcohol use. What do ALT and AST look like? What disease is at hand?

A

Nonalcoholic fatty liver disease

ALT > AST

28
Q

What is the cause of hepatic encephalopathy??

A

Cirrhosis—>portosystemic shunts—> decreased NH3 metabolism—> neuropsychiatric dysfunction.

29
Q

Px presents with mildly decreased UDP-Glucuronosyltransferase conjugation and impaired bilirubin uptake. The patient is usually asymptomatic or mild jaundice usually with stress, illness, or fasting. Increased unconjugated bilirubin without overt hemolysis. What pathology is at hand?

A

Gilbert Syndrome

Relatively common, benign condition.

30
Q

Px presents with absent UDP-Glucuronosyltransferase. The patient usually dies within the first years of life. CF: kernicterus, increased unconjugated bilirubin. What pathology is at hand? What is the treatment?

A

Crigler-Najar Syndrome type I.
Tx-Liver transplant

Type II is less severe and treatment responds to phenobarbital (which increases liver enzyme synthesis).

31
Q

Px presents with conjugated hyperbilirubinemia fue to defective liver excretion. CF: grossly black (dark) liver. What pathology is at hand?

A

Dubin-Johnson Syndrome

32
Q

Px presents with conjugated hyperbilirubinemia due to defective liver excretion. CF: normal looking liver (not black). What pathology is at hand?

A

Rotor syndrome

—>Milder form of Dubin-Johnson Sd.

33
Q

What is the gene and inheritance pattern in hemochromatosis??

A

Autosomal recessive and C282Y>H63D mutation on HFE gene (chromosome 6).

Associated with HLA-A3

34
Q

Pleomorphic adenoma, mucoepidermoid carcinoma, and Warthin tumors are all part of what pathology?

A

Salivary gland tumors

35
Q

What is the MC Benign liver tumor? What is the typical age it’s found, and why is biopsy contraindicated?

A
  • Cavernous hemangioma
  • Age: 30-50 years
  • contraindicated because risk of hemorrhage
36
Q

Most common infection risk for Px with cirrhosis and ascites. Often asymptomatic but can cause fever, chills, abdominal pain, ileus, or worsening encephalopathy. What is the disease, the causative agent, and what is the treatment?

A

-spontaneous bacterial peritonitis
-agent: E.coli, Klebsiella, or less commonly, a G(+) Streptococcus.
TX: Empiric Antibiotic - 3rd gen. Cephalosporin (cefotaxime)

37
Q

What artery supplies the distal 1/3 of the transverse colon, to the upper portion of the rectum? What level is it located? What is the parasympathetic innervation?

A

Inferior mesenteric artery

L3

Pelvic nerve

38
Q

What artery supplies the distal duodenum to the proximal 2/3rds of the Transverse colon? What level is it located? What is the parasympathetic innervation?

A

Superior mesenteric artery

L1

Vagus

39
Q

What artery supplies the pharynx, lower esophagus to proximal duodenum? What level is it located? What is the parasympathetic innervation?

A

Celiac artery

T12/L1

Vagus nerve

40
Q

50 y/o patient presents with painless jaundice and no other symptoms. What is the most likely diagnosis??

A

Pancreatic cancer in head of pancreas

41
Q

What artery supplies the rectum and distal third of the colon?

A

Inferior mesenteric artery

42
Q

What characteristic finding would you see on electron microscopy of a dendritic cell with Langerhan cell histiocytosis?

A

Burbeck granules (give the appearance of tennis rackets)

43
Q

What medications inhibit cytochrome p450?

A 
Crack amigos:
Ciprofloxacin
Ritonavir 
Amiodarone 
Cimetidine 
Ketocinazole
Acute alcohol use
Macrolides
Isoniazid 
Grapefruit juice
Omeprazole
Sulfinamides
44
Q

What GI malignancy is associated with signet ring cells??

A

Gastric adenocarcinoma

45
Q

What pathologies are associated with nutmeg liver?

A

Right sided heart failure

Budd-Chiari Syndrome

46
Q

A patient presents with dark connective tissue and organs, has a musty body odor and describes darker calores urine. What is the pathology at hand and what is the deficiency enzyme??

A

Alkaptonuria

Deficiency is of homogentisic acid oxidase

Gastroenterology (6 decks)

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