Chapter 53: Biliary Tract Flashcards

1
Q

what are the small ducts that drain bile directly into the galbladder from the liver

A

Ducts of Luschka

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2
Q

what aretery is susceptible to injury during cholecystectomy

A

RIght hepatic artery because of its proximity to the cystic artery and calot’s triangle

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3
Q

where is the infundibulum of the gallbladder

A

near the cystic duct

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4
Q

where is the fundus of the gallbladder

A

at the end of the gallbladder

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5
Q

what are the boundaries of the triangle of calot

A
  1. common hepatic duct
  2. liver
  3. cystic duct
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6
Q

what is the source of ALP

A

bile duct epithelium therefore expected to be elevated in bile duct obstruction

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7
Q

what is in bile

A

cholesterol, lecthin(phospholipid), bile acids, bilrubin

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8
Q

what does bile do

A

emulsifies fat

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9
Q

what is the enterohepatic circulation

A

circulation of bile acids from the liver to the gut and back to the liver

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10
Q

where are most of the bile acids absorbed

A

terminal ileum

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11
Q

what stimulates gallbladder emptying

A
  1. CCK
  2. vagal imput
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12
Q

what is the source of cck

A

duodenal mucosal cells

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13
Q

cck actions

A
  1. gallbladder emptying
  2. opening of ampula of vater
  3. slowing of gastric emptying
  4. pancreatic acinar cell growth and release of exocrine products
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14
Q

at what level of serum bilrubin does one start to get jaundiced

A

2.5

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15
Q

where does one first find evidence of jaundice

A

under the tongue because UV breaks down bilrubin at other sites

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16
Q

what are the signs and symptoms of obstructive jaundice

A
  1. jaundice
  2. dark urine
  3. clay colored stool
  4. pruritus
  5. loss of apetite
  6. nausea
17
Q

what causes the itching in obstructive jaundice

A

BILE SALTS in dermis

18
Q

cholangitis

A

infection of the biliary tract

19
Q

klatskins tumor

A

cholangiocarcinoma of bile duct at the junction of the right and left hepatic ducts

20
Q

what is a biloma

A

intraperitoneal bile fluid collection

21
Q

what is a choledochojejunostomy

A

anastamosis between cbd and jejenum

22
Q

what is a hepaticojejunostomy

A

anastamosis of hepatic o common hepatic ducts to jejenum

23
Q

what is the intial diagnostic study of choice for evaluation of bening gallbladder

A

US

24
Q

what is ERCP

A

Endoscopic Retrograde CholangioPancreatography

25
Q

what is PTC

A

Percutaneous Transhepatic Cholangiogram

26
Q

what is IOC

A

Intraoperative cholangiogram

  • done laproscopically or open
  • rule out choledocholithiasis
27
Q

what is HIDA/PRIDA scan

A
  • radioisotope study
  • the isotope is concentrated in the liver and secreted into bile
  • demonstrates:
    • cholecystitis
      • nonopacification of the galbladder from obstruction of the cystic duct
    • bile leak
    • CBD obstruction
  • bile flows into hepatic ducts to the cb ,d thru the cyustic duct into gallbladder
28
Q

what is a cholecystectomy

A

removal of galbladder laproscopically or through a standard kocher incision

29
Q

what is a sphincterotomy

A

Cut through sphincter of Oddi to allow passage of gallstones from the commonbile duct; most often done at ERCP; a.k.a. “papillotomy

30
Q

How should postoperative biloma be treated after a lap chole?

A
  • Percutaneous drain bile collection
  • ERCP with placement of biliary stent past leak (usually cystic duct remnantleak)
31
Q

What is the treatment of major CBD injury after a lap chole?

A

Choledochojejunostomy