Gallbladder and Extrahepatic Biliary System Chapter 32 Schwartz’s

download Gallbladder and Extrahepatic Biliary System Chapter 32 Schwartz’s

of 46

  • date post

    15-Dec-2015
  • Category

    Documents

  • view

    262
  • download

    7

Embed Size (px)

Transcript of Gallbladder and Extrahepatic Biliary System Chapter 32 Schwartz’s

  • Slide 1
  • Gallbladder and Extrahepatic Biliary System Chapter 32 Schwartzs
  • Slide 2
  • Why Should You Care? Lap Chole = frequent 2 nd year case Anatomy can be tricky Complications can be very bad! Even if you dont do this type of surgery, your friends and family may have this type of surgery and come to you for info/advice
  • Slide 3
  • Anatomy
  • Slide 4
  • The cystic artery which supplies the gallbladder is usually a branch of what artery?
  • Slide 5
  • Anatomy The cystic artery which supplies the gallbladder is usually a branch of what artery? The Right Hepatic Artery (90% of the time) Course can vary, usually in triangle of Calot Divides into posterior and anterior branches at neck of gallbladder
  • Slide 6
  • Anatomy What are the boundaries of the Triangle of Calot?
  • Slide 7
  • Anatomy What are the boundaries of the Triangle of Calot? Cystic duct, common hepatic duct, liver margin
  • Slide 8
  • Anatomy Name the mucosal folds found in the cystic duct adjacent to the gallbladder neck. Extra credit: do they have any valvular function?
  • Slide 9
  • Anatomy The Spiral Valves of Heister, and no they do not have any valvular function.
  • Slide 10
  • Anatomy The arterial supply to the bile ducts is derived from which 2 major arteries and is oriented in what clock positions???
  • Slide 11
  • Anatomy The arterial supply to the bile ducts is derived from which 2 major arteries and is oriented in what clock positions??? Gastroduodenal and Right Hepatic Arteries, in the 3:00 and 9:00 positions (medial and lateral walls)
  • Slide 12
  • Ruggero Oddi Described the Sphincter of Oddi while a student Francis Glisson identified the sphincter 2 centuries earlier Inflammation of the sphincter of Oddi is called odditis
  • Slide 13
  • Anatomy The classic description of the extrahepatic biliary tree and its arteries applies only in: A. two thirds of patients B. half of patients C. one third of patients
  • Slide 14
  • Anatomy The classic description of the extrahepatic biliary tree and its arteries applies only in: A. two thirds of patients B. half of patients C. one third of patients
  • Slide 15
  • Anatomy Name the small ducts which drain directly from the liver into the body of the gallbladder, and are a potential source of biloma post cholecystectomy
  • Slide 16
  • Anatomy Name the small ducts which drain directly from the liver into the body of the gallbladder, and are a potential source of biloma post cholecystectomy Ducts of Luschka
  • Slide 17
  • Anatomy Replaced Right: Right Hepatic Artery off the SMA; 20% of patients; can course anterior to common duct Cystic Artery can arise from the Left Hepatic, Common Hepatic, GDA, or SMA; 10% of patients
  • Slide 18
  • Physiology Stimulates Gallbladder ContractionStimulates Gallbladder Relaxation CCKAtropine ParasympathomimeticsVIP Vagus NerveSplanchnic Sympathetic Activity Antral distention of stomachSomatostatin
  • Slide 19
  • Physiology Which of the following factors are asscoiated with increased risk of gallstone development? A. Obesity B. Pregnancy C. Crohns disease D. Terminal ileal resection E. Gastric surgery F. Sickle Cell Disease
  • Slide 20
  • Physiology Which of the following factors are asscoiated with increased risk of gallstone development? A. Obesity B. Pregnancy C. Crohns disease D. Terminal ileal resection E. Gastric surgery F. Sickle Cell Disease
  • Slide 21
  • Physiology Which of the following is not a major component of bile? Cholesterol Bile Salts Lecithin Budweiser
  • Slide 22
  • Physiology Which of the following is not a major component of bile? Cholesterol Bile Salts Lecithin Budweiser
  • Slide 23
  • Gallstone Fun Facts In Western countries, Cholesterol stones are the most common type of gallstones Pigment stones are black or brown b/c of Ca bilirubinate; often d/t hemolytic disorders Brown stones usually d/t bacterial infection caused by bile stasis Black/brown stones more common in Asia
  • Slide 24
  • Imaging True or False: Ultrasound will show stones in the gallbladder with a sensitivity and specificity of >90%.
  • Slide 25
  • Imaging True or False: Ultrasound will show stones in the gallbladder with a sensitivity and specificity of >90%. TRUE
  • Slide 26
  • Imaging True or False: MRCP has 95% sensitivity and 89% specificity at detecting choledocholitiasis.
  • Slide 27
  • Imaging True or False: MRCP has 95% sensitivity and 89% specificity at detecting choledocholitiasis. TRUE
  • Slide 28
  • Imaging Your patient, a retired chemist/anatomy teacher, is suspected of having a bile leak following a laparoscopic cholecystectomy. Your team decides to order a HIDA scan, and the patient wants to know what the test is and how it works. Please explain..
  • Slide 29
  • HIDA Scan Biliary Scintigraphy; gives anatomic/fxnal info. 99mTechnetium-labeled derivatives of dimethyl iminodiacetic acid (HIDA) IV, cleared by Kupffer cells,excreted in bile. Liver uptake detected w/in 10min. GB, bile ducts, duodenum seen in 60min in fasted pt.
  • Slide 30
  • HIDA Scan Acute Cholecystitis=non-visualized GB w prompt filling of CBD & duodenum False positives in pts w GB stasis/critically ill/TPN Absent duo filling=obstruction at ampulla
  • Slide 31
  • Surgical Treatment Is prophylactic cholecystectomy routinely indicated in patients with asymptomatic gallstones?
  • Slide 32
  • Surgical Treatment Is prophylactic cholecystectomy routinely indicated in patients with asymptomatic gallstones? NO
  • Slide 33
  • Surgical Treatment Is prophylactic cholecystectomy routinely indicated in patients with asymptomatic gallstones? NO Advisable for elderly diabetics, pts isolated from medical care, pts w increased risk of GB CA Porcelain GB is indication for cholecystectomy
  • Slide 34
  • Surgical Treatment of Gallstones Approx 3% of asxmatic pts become sxmatic per year Complicated gallstone dz develops in 3-5% of sxmatic pts per year Over 20 yr period, two thirds of asxmatic pts w gallstones remain sx free!
  • Slide 35
  • Surgical Tx of Gallstones A 45 yo WF presents to the ED with biliary colic for the second time in 2 weeks, repeat RUQ U/S shows no stones but sludge in the GB. Is cholecystectomy indicated in this pt?
  • Slide 36
  • Surgical Tx of Gallstones A 45 yo WF presents to the ED with biliary colic for the second time in 2 weeks, repeat RUQ U/S shows no stones but sludge in the GB. Is cholecystectomy indicated in this pt? Yes! 2 or more occasions of pain/sludge Cholesterolosis/adenomyomatosis/granulo- matous polyps indication if causing sxs
  • Slide 37
  • PEG What do you call this?
  • Slide 38
  • Emphysematous Gallbladder Persistent obstruction>2ndary bacterial infxn>gas forming organisms involved>see gas in GB lumen/wall of GB GB can perforate, form cholecystoenteric fistula, lead to gallstone ileus, cause intrahepatic abscess, peritonitis, etc.
  • Slide 39
  • Surgical Tx of Gallstones 26 yo G1P0 presents to ED with symptomatic gallstones refractory to medical management, dietary modifications. Is lap chole safe???
  • Slide 40
  • Surgical Tx of Gallstones 26 yo G1P0 presents to ED with symptomatic gallstones refractory to medical management, dietary modifications. Is lap chole safe??? YES
  • Slide 41
  • But does it really work doc? Approx. 90% of pts with typical biliary sxs (epigastric/ruq pain, N/V episodes) and stones are sx free post-cholecystectomy Pts w atypical sxs or dyspepsia (flatulence, belching, bloating, dietary fat intolerance) have less favorable results
  • Slide 42
  • Murphys Sign An inspiratory halt upon deep palpation of the R subcostal area, characteristic of acute cholecystitis
  • Slide 43
  • Mirizzis Syndrome Obstruction of the bile ducts by severe pericholecystic inflammation secondary to impaction of a stone in the infundibulum of the GB that mechanically obstructs the bile duct
  • Slide 44
  • DDx??? 55 yo WF presents with 10 hours of RUQ pain radiating to back, +N/V, similar prior episodes lasted only a few hours and resolved completely. Started suddenly after fatty meal. Temp 101.9, otherwise VSS Guarding in RUQ, +Murphys Sign WBC# 15, LFTs WNL
  • Slide 45
  • DDx Acute Cholecystitis Peptic Ulcer (w or w/o perforation) Pancreatitis Appendicitis Hepatitis Perihepatitis (Fitz-Hugh-Curtis Syndrome) Myocardial Ischemia Intercostal Nerve Herpes Zoster Pneumonia Pleuritis
  • Slide 46
  • Acute Cholecystitis Tx IV fluids, pain meds, Antbx (cover gram neg aerobes and anaerobes, 3 rd gen cephalosporin) Cholecystectomy is definitive tx Earlier the better!