Gastrointestinal Exam 2 Flashcards
Sphincter of Odi
Between pancreas and duodenum
3 exoxrin pancreatic enzymes
Protease (trypsin and chymotrypsin)
Lipase
Amylase
Pancreatic delta cells
Secrete somatostatin
Endocrine cells more in the tail
Parts of pancreas damaged more with chronic versus acute pancreatitis
Acute - exocrine
Chronic - endocrine
MCC of acute pancreatitis
Gallstones, Alcohol, Idiopathic 20%
Alcoholic pancreatitis
May be due to acinar cell injury or stimulated contraction of sphincter of Oti
Presentation of acute pancreatitis
Epigastric pain radiating to the back
Improves leaning forward, worse lying down
N/V, sweating
PE findings for acute pancreatitis- 4
May have absent bowel sounds, epigastric tenderness, Jaundice, Mass
Cullen’s sign
Bruising around the umbilicus d/t acute pancreatitis
Gray Turner sign
Flank bruising d/t pancreatitis
Acute interstitial edematous pancreatitis
More common acute pancreatitis - intact blood flow
Necrotizing acute pancreatitis
Blood flow not intact - more severe
Labs for acute pancreatitis
Amylase and Lipase (more sensitive) 3x upper limit is diagnostic
Leukocytosis on CBC
Imaging for acute pancreatitis
Sentinel loop or colon cutoff sign on plain X-ray
US not useful
CT may show enlarged pancreas
Ranson’s Criteria- 5 At Admission and 6 after 48 Hours
Pancreatitis Prognosis
Admission:
Age >55
BG > 200mg/dL
Serum LDH >350
AST >250
WBC >16,000
Within 48 hours
HCT decrease >10%
BUN increase >5mg/dL
Serum calcium <8mg/dL
PaO2 <60mmHg
Base deficit >4mEq/L
Estimated fluid sequestration >6L
3+ predict a severe course
Mortality rate for Ranson’s Criteria
0-2 - 1%
3-4 - 16%
5-6 - 40%
7-8 - 100%
BISAP criteria for acute pancreatitis
BUN >25mg/dL
Impaired Mental Status
Systemic inflammatory response
Age >60
Pleural effusion
Treatment for acute pancreatitis
Admit
Rest Pancreas - NPO
IV fluids - early and aggressive
NO MORPHINE, Demerol for pain
Bed rest
Mild acute pancreatitis treatment as symptoms improve
Clear liquids and low fat first
Cholecystectomy if gallstone
Monitor for return of bowel sounds
Tx for severe acute pancreatitis
ICU, Treat complication, ABX if abcess - imepenem, Fluid resicitation, CT if not improving
Acute pancreatic fluid collection
Resolves spontaneously in 7 days
Chronic pancreatitis presentation
Slow irreversible loss
MCC = Alcoholism, smoking, autoimmune
Steady pain, worse after eating, DM and steatorrhea d/t enzyme loss
Can have an acute attack
Labs for chronic pancreatitis
Slightly elevated lipase and amylase could be normal
Check of autoimmune cause
Imaging for chronic pancreatitis
Calcifications on X-ray
CT is preferred
Ultrasound - honeycombing of the pancreas
Management of chronic pancreatitis
Low fat, stop smoking, alcohol
Pain management - careful with opioids
Treat complications
Puestow procedure
Pain relief for dilated duct - attach intestines to pancreas
Whipple procedure
Resection of part of the pancreas
Part of pancreas easier to resect
Head of the pancreas
Risk factors for pancreatic cancers (4)
Over 45
Late onset diabetes
Smoking
BRACA gene
Clinical presentation of pancreatic cancer
Gnawing insidious pain like gastritis
Painless jaundice with nontender palpable gallbladder = Courvasier’s sign
Sister Mary Joseph Nodule
Tumor marker for pancreas
CA-19-9
Imaging for pancreatic cancer
CT = First line
ERCP if uncertain CT
Pancrease staging
T1 and T2 confined to pancreas, others not
Surgery for pancreatic cancer
Exploratory laparoscopy followed by whipple procedure is suitable
Screening for pancreatic cancer
If 1st degree relative - get a CT 10 years before onset in the relative
ERCP
More invasive with sedation
Diagnostic AND therapeutic
MRCP
Like an MRI, less invasive
Only diagnostic
Triangle of Calot
Medial common hepatic duct
Inferior cystic duct
Superior-inferior surface of the liver
Landmark in cholecystectomy allowing for ligation of cystic duct and artery - need to protect common bile duct
CCK
Cholecystokinin - Stimulates gall bladder contraction and sphincter of Oti relaxation
Causes of gallstone formation
High cholesterol
High Billirubin
Sedentary Gall Bladder
Lifestyle changes to prevent cholelithiasis
Low carb or mediterranean diet
Caffeinated coffee
Asymptomatic cholelithiasis
Stones stay in the bottom of gall bladder and do not cause pain by blocking the duct
Presentation of cholelithiasis- Pain, Timing, Appearance
RUQ pain to right shoulder blade
After fatty meals
Dull with nausea and sweating
Not ill-appearing
Lab results for cholelithiasis
WNL
Abd exam with cholelithiasis
No peritoneal sx, no rebounds tenderness
Pretty benign
Imaging for cholelithiasis
Abd US is procedure of choice - RUQ
Could also use CT or XR
Treatment for cholelithiasis
NSAIDS for pain
Laparoscopic cholecystectomy
Don’t need to treat if asymptomatic
3 reasons for a prophylactic cholecystectomy
Calcified gall bladder
3cm or greater stones
Native American
Pregnancy and cholecystectomy
Try to wait until 2nd trimester
Need labor and delivery and NICU there
Intraoperative choleangiogram
Xray with catheter in bile duct to help with surgeon visualization - used to check for nicking of common bile duct
Treatment for cholelithiasys in those not candidates for surgery- 2 Pharm options
Urosodiol - Ursodeoxycholic acid
Bile salt PO
3 types of cholecystitis
Acute Calculus - due to gallstones and MC
Acute acalculous - Gallbladder stasis ischemia - major surgeries
Chronic cholecystitis - Episodic billiary cholic
Presentation of cholecystitis
Appear Ill - Unlike cholic
Pain with fatty meal lasting over 6 hours!!!
Peritoneal signs
Murphys sign
Cholecystitis - Inspiration stops with pressing down in RUQ
Lab findings in cholecystitis
Leukocytosis w/ Left shift
No elevation of liver enzymes
Imaging for acute cholecystitis
Thickening of gallbladder wall
Stones
Use an US
HIDA scan if inconclusive
HIDA scan
IV contrast that travels into bile ducts - look for transit time
Non-visualized gallbladder = Cholecystitis
Other diagnostic test for cholecystitis
CCK injection
Ejection fraction of gallbladder under 35
Complications of acute cholecystitis
Gangrene of gallbladder
Gallbladder perforation
Hydrops of gallbladder - distended
Mirizzi syndrome - Jaundice from common hepatic duct compression
Percelain gallbladder - calcified
Management of acute cholecystitis- 4
Abx for E coli - Pip and Taz or 2nd or 3rd gen chep or cipro and metro
NPO w/ NG tube
Demerol or NSAID for pain
Cholecystectomy w/in 24-48 hours
New treatment for acute cholecystitis
Cholecystotomy for drainage
Alternative if they can’t handle a cholecystecomy
-choledo-
Common bile duct
Choledocholithiasis presentation and cause
Gallstone in common bile duct - uncomplicated
RUQ pain up to scapula
Jaundice
Epigastric tenderness
Diagnosis for choledocholithiasis
Elevated liver enzymes with bilirubinemia
Treatment for choledocholithiasis
ERCP with spincterotomy and stent placement
with Cholecystectomy after
MRCP used first for low risk - just cholecytectomy if no stone
Cholangitis
Bacterial infection with stone in common bile duct
Triad of acute cholangitis
Charcot triad
RUQ pain
Fever
Jaundice
Reynolds Pentad
Add - Hypotension and Mental status changes
Labs and imaging for acute cholangitis
CBC leukocytosis
Liver enzymes
Prolonged PT
ERCP is the most accurate imaging - Diagnostic procedure of choice, will likely do an US first
Treatment for cholangitis
NPO, prep for surgery, IV fluids, Pain control
ERCP for stone extraction
ABX for cholangitis
Mild/Mod - Cipro and flagyl
Severe - Zosyn(Pip and Taz) and Flagyl
First line imaging for most billiary diseases
US
Primary sclerosing cholangitis
Related to UC and IBD
No cure
Leads to obstructive symptoms - fibrosis
Presentation of PSC
Jaundice
Pruritis
Hepatosplenomegaly
Lab finding for PSCA
Elevated LFTs
Increased P-ANCA antibodies (specific to injuries of billiary tree)
Imaging for PSCA
MRCP - ERCP if inconclusive
Beads on a string seen is indicative - Segmental fibrosis
Liver biopsy with “onion skinning” if those are inconclusive
Treatment for PSCA
No cure
Cipro for episodes
Immune suppressants and Ursodeoxycholic acid are being studied
ERCP with stent
Liver transplant
Resection of carcinoma - complication
Most deadly gallbladder cancer
Choleangiocarcinoma
3 common coexisting conditions with gallbladder carcinoma
Chronic infection - Salmonella
Gallbladder polyp
Calcification of gallbladder
Often invades liver
MC location of choleangiocarcinoma
Confluence of R/L hepatic ducts
PE findings of biliary tract cancer
RUQ tenderness
Courvoisier sign
Ascites
Diagnostic for Carcinoma of biliary tract
ERCP w/ biopsy or US guided biopsy
Tx for biliary tree cancer
Resect
Roux en Y if non-resectable to bypass bile duct -bile drains fromthe liver to the duodenum
Porta hepatis
Hepatic artery, Portal vein, and hepatic duct - between the four lobes
Unconjugated billirubin
Indirect bilirubin that has NOT been processed by the liver. made from protoporphyrin
Binds to albumin, lipid soluble
Conjugated bilirubin
Made by uridine glucuronyl transferase
Water soluble - has been processed by the liver
Goes to bile ducts
Fates of conjugated bilirubin
Goes to SI, urobilinogen sent to urine, cobilin sent to feces