Clinical Flashcards
Most potent acid inhibitor for GERD?
PPIs
-heals erosive esophagitis
Does the grade of esophagitis correlate with the degree of symptoms?
No
What is the main reason for GERD?
LES dysfunction
Causes of GERD?
- Defective esophageal clearance (dysmotility)
- Hiatal Hernia
- LES dysfxn (decreased pressure)
- Delayed gastric emptying
- Increased intrabdominal pressure (GPEG)
- Increased transient relaxation of LES
Typical GERD symptoms?
- heartburn
- regurgitation
- difficulty swallowing
- water brash: hyper salivation
Atypical GERD?
- chronic cough
- cavities
- chest pain
- hoarse
- asthma
Complications of GERD?
- bleeding
- stricture
- ulcers
- Barrett’s
- Cancer
Barrett’s esophagus?
metaplastic columnar epithelium replaces stratified squamous
Factors that Increase risk of GERD?
- nocturnal acid
- age
- white
- male
- obesity
- tobacco
- family history
Factors that decrease risk of GERD?
CagA+ H. pylori
Middle aged white obese male with reflux for 20 years.
- Diagnosis?
- Treatment?
- GERD
2. PPI for 3 weeks then endoscopy
Factors that increase risk of esophageal squamous cell ca?
- smoking
- alcohol
- low veggie intake
- hot liquids
- achalasia
- lye ingestion
- Tylosis (hyperkeratosis of palms and feet)
- Bisphosphonates
Treatment of esophageal squamous cell ca?
- Endoscopy with biopsy
- CT/MRI for metastases
- Endoscopic ultrasound if negative
- chemo/radiation
- Palliation
Most common esophageal cancer?
Adenocarcinoma of lower 1/3
- arise from BE
- nocturnal heartburn is risk factor
Clinical EoE in adults?
- Dysphagia
- Food impaction
- Heartburn
- Regurgitation
- Chest pain
- Odynophagia
Clinical EoE in children?
- abdominal pain
- Heartburn
- Regurgitation
- N/V
- Dysphagia
- Failure to thrive
Linear furrows, exudates, and concentric rings in esophagus?
Eosinophilic Esophagitis
Eoe complications?
- longitudinal rent
- perforation
Histo diagnosis of EoE?
> 15 eosinophils per HPF on biopsy
Treatment of EoE?
- elimination diet
- PPI
- Swallow steroids for adults (Fluticasone)
Pathophys of achalasia?
- degeneration of neurons in esophageal wall leads to lack of inhibition of LES so LES cannot relax and loss of peristalsis in distal esophagus
- caused by Chagas (trypanosome cruz)
Dysphagia to solids and liquids with regurgitation onto pillow at night?
achalasia
How to diagnose achalasia?
- barium swallow shows dilated esophagus and beak like narrowing
- manometry shows elevated LES resting pressures
Treatment for achalasia?
- nitrates
- ca blockers
- botulinum
- pneumatic balloon
- myotomy
Boerhaave syndrome?
- sudden increase in esophageal pressure with negative intrathoracic pressure causes perforation
- severe retching
- severe retrosternal chest pain
How to diagnose esophageal perforation?
- CXR shows free air
- CT
- gastrograffin swallow
- EGD if surgery
HIV+ patient with odynophagia, who inhales corticosteroids. EGD shows white mucosal plaques down esophagus.
- Diagnosis?
- Treatment?
- Candidiasis
2. Fluconazole
Prophylaxis of esophageal varices?
- nonselective beta blockers
- EVL
Treatment of esophageal varices hemorrhage?
- EVL
- blood with clotting factors
- Octreotide (somatostatin) to decrease portal pressures
- Quinolones or Ceftriaxone
- balloon
- surgery
- TIPS
Nutcracker esophagus?
> 220 mmHg distal esophageal peristaltic pressures
-hypercholinergic
Complicated symptoms of GERD?
- dysphagia
- odynophagia
- bleeding
How should GERD be diagnosed?
clinically, no tests
Management of GERD?
- weight loss
- elevate bed
- eliminate food triggers
- PPI
Factors that predict poor response to medical therapy of GERD?
- nocturnal reflux
- LES dysfxn
- mixed gastric and duodenal reflux
- mucosal injury
Hiatal hernia causes?
- Phrenesophageal ligament degeneration
- aging
- smoking - Increased intra-abdominal pressure
- obesity (BMI > 30 increases risk 4.2)
- straining
Types of hiatal hernias?
- GE junction above diaphragm = most common
- Fundus herniates above diaphragm
- GE and Fundus herniate
- GE, Fundus, and other organs herniate
Gold standard treatment of Hiatal hernias?
- Nissen fundoplication
- 360 degree wrap - Toupet
- 270 degree - Dor
- wrap anterior to esophagus
ADR of Nissen?
- flatulence
- adbominal distention
Old female with chronic DM presents with early satiety, epigastric pain, and vomiting of undigested food.
Diagnosis?
- Diabetic gastroparesis
- pyloric stenosis
- achalasia
If you suspect gastroparesis, what’s your next step?
- Rule out mechanical obstruction first
2. Gastric Scintigraphy
Gastroparesis pathophys?
MMC and phasic antral motility are impaired
Most common cause of gastroparesis?
idiopathic
Protective factors of the stomach? causes of disruption?
- mucous (acid)
- hydrophobicity (h. pylori)
- bicarbonate (NSAIDS)
- blood flow (ischemia)
- prostaglandins (NSAIDS)
Noninvasive tests for H. pylori?
- Urea breath test
- Stool antigen
- serology
When to test for H. pylori?
- active ulcer
- history of ulcers
- MALT
- if going to be treated
Highest risk of PUD?
NSAIDS users with H. pylori
ZE?
- gastrinoma secreting hyper gastrin in duodenum (70%) or pancreas
- PUD develops in duodenum (90%)
How to diagnose ZE?
- Fasting serum Gastrin levels (>1000 pg/mL)
- gastric pH < 2
- Secretin test
- screen for MEN1 (PTH, Ca, prolactin)
Causes of gastritis?
- infections
- drugs
- autoimmune hypersensitivity
Causes of gastropathy?
- drugs
- bile reflux
- stress
- hypovolemia
- chronic vascular congestion
Enlarged gastric folds Ddx?
- Chronic gastritis (lymphoid hyperplasia/h. pylori)
- tumors
- ZE
- Menetrier’s
Menetrier’s?
- enlarged rugal folds (foveolar hyperplasia)
- decreased acid (parietal atrophy)
- protein losing gastropathy
- hypoalbumin
- associated with CMV and H. pylori
Most common benign tumor of stomach?
leiomyoma
Highest incidence of gastric cancer?
Japan
Volvulus?
- stomach rotates
- organoaxial: greater curve swings up
- mesenteroaxial: antrum rotates to the left
Cholesterol stones?
- monohydrate crystals
- mucin
- unconjugated Br
Black pigment stones?
- cirrhosis, hemolysis, TPN
- unconjugated Br
- calcium
- mucin
Brown pigment stones?
- stasis, infection (radiolucent)
- unconjugated
- anaerobes
- mcuin
- ca salts
Gallstone pathophys?
- Increased cholesterol and decreased bile salts causes supersaturation
- central calcium nidus
- GB stasis
Is a CT a good test for gallstones?
no unless calcified
MRCP for gallstones?
highly sensitive if stones > 1cm
-doesnt detect small stones
Best test for imaging gallstones?
- EUS
2. ERCP
Biliary colic from chronic cholecystitis?
- stone is in neck of cystic duct, intermittent obstruction
- fibrosis and inflammation
- shrunken GB and RA sinuses if recurrent
- epigastric pain radiating to right shoulder
Ultrasound results for chronic cholecystitis?
hyper echoic foci with shadowing
Most common complication of gallstone disease?
Acute cholecystitis
- 90% from chronically obstructed stone
- young females
Pathophys of acute cholecystitis?
cystic duct is obstructed by gallstone which damages GB mucosa stimulating prostaglandin synthetase
-secretions and inflammation with bacteria (50%)
40 year old female with RUQ pain, elevated Br (<4), and inspiratory arrest (murphys).
- Diagnosis?
- if Br >4?
- Acute cholecystitis
2. Choledocholithiasis
Ddx of acute cholecystitis?
- Appendicitis
- Pancreatitis
Choledocholithiasis?
stone in CBD
Patient with RUQ pain, fever, jaundice, hypotension, and confusion. ALT > 150. Elevated direct bilirubin.
Diagnosis?
Choledocholithiasis with ascending cholangitis
Acalculous cholecystitis?
- GB inflammation without stones
- elderly, HIV, vasculitis, infection, BMT
- treat with antibiotics and cholecystectomy
Causes of acalculous cholecystitis?
- prolonged fasting
- immobility (no CCK)
- hemodynamic instability (ischemia)
Cholesterolosis?
accumulation of lipid in GB mucosa
Patient with epigastric pain that radiates to the back, N/V, and diarrhea. Labs show elevated lipase.
Diagnosis?
Acute pancreatitis
Key histories for acute pancreatitis?
- Biliary disease
- Chronic alcohol abuse
- Binge drinking
- HyperTG
- Post-op
- Cystic fibrosis
Xray of acute pancreatitis?
- Colon cut off sign
- edema of pancreas compressing on splenic flexure with distention and sympathetic ileus - Sentinel loop
- due to ileus
Purtscher retinopathy?
thrombi in eye indicating acute pancreatitis
What enzyme is always elevated in acute pancreatitis?
Lipase
-amylase but not as specific
Why use abdominal ultrasound?
suspected biliary disease
-not used for pancreatitis
Why use MRCP?
noninvasive image of biliary and pancreatic ducts
-use if choledocholithiasis is suspected
Test done if acute pancreatitis is severe?
Abdominal CT
What is severe acute pancreatitis?
- severe inflammatory infiltrate
- necrosis
- gland dysfunction
- multi organ failure
- admitted to ICU
Ranson criteria for pancreatitis on admission?
- age 55
- WBC > 16,000
- Glucose > 200
- LDH > 350
- AST > 250
Ranson criteria within 48 hours?
- Hct drops >10%
- BUN increases by 5
- Calcium < 8
- pO2 < 60
- Base deficit > 4
- Fluid sequestration > 6 L
Patient with epigastric pain, weight loss, steatorrhea, and DM. Low trypsinogen and high glucose.
Diagnosis?
Chronic pancreatitis
Pathognomic test for chronic pancreatitis?
KUB and CT shows calcium deposits on pancreas and pseudocysts
-ERCP is gold standard to diagnose but less invasive option is done first
Patient is having worsening symptoms after 4 weeks from bout of acute pancreatitis
Necrotizing pancreatitis
CT/MRI results of necrotizing pancreatitis?
Dead tissue will not take up IV contrast and appear black
-air indicates infection
Signs of necrotizing pancreatitis, hemorrhagic?
Cullen sign
-bluish discoloration around umbilicus secondary to hemoperitoneum
Grey Turner sign
-red brown purple flank secondary to retroperitoneal blood
Treatment of acute pancreatitis?
- NPO
- IVF (D5W)
- Analgesics
- Imipenem Abx
- TPN if Ranson >3
AST normal value? Where synthesized?
8-45
Liver, heart, muscles
-found in mitochondria
ALT normal value? Where synthesized?
7-55
- 20-25 females
- 30-35 males
Liver cells
-more specific to liver disease than AST
AST:ALT in a 2:1 ratio?
Alcoholic hepatitis
Patient with ALT/AST 10x higher than normal, asterixis, confusion, and prolonged PT.
Acute liver failure with encephalopathy
ALP normal value? Where made?
45-115
Made in liver and bones
ALP >4x normal and high GGT. Mild elevation of AST/ALT. Diagnosis?
cholestasis
High ALP and normal GGT. Diagnosis?
Bone disease
GGT normal value? Where made?
9-48
made in liver cells and biliary epithelial cells
LDH use?
122-222
useful for MI or hemolysis
Why does PT and INR increase in liver disease?
- decreased synthesis of clotting factors
- Vit k deficiency
Low albumin in hepatic test means?
chronic liver disease
Normal bilirubin levels?
0.2-1.2
Elevated bilirubin with normal ALP. Diagnosis?
genetic disorder or hemolysis
Elevated conjugated Br?
- biliary obstruction
- intrahepatic cholestasis
- liver injury
What conjugates Br?
UDP-glucuronosyltransferase
College student with fatigue and jaundice. High unconjugated Br.
- Diagnosis?
- Pathophys?
- Treatment?
- Gilbert Syndrome
- Mild reduction in UDP-G
- Phenobarbital
Infant 2 weeks after birth with extensive jaundice and increased unconjugated Br. Dies shortly after.
Diagnosis?
Crigler Najjar Type 1
- lack of conjugating enzyme
- Type 2 less severe
Patient with elevated conjugated Br, jaundice, and a black liver.
Diagnosis?
Dubin johnson
-inability to transport Br to bile canaliculi
Patient with elevated conjugated Br and no black liver.
Diagnosis?
Rotor
Patient with cirrhosis, DM, and hyperpigmentation of skin. Elevated Ferritin >500.
Diagnosis?
Pathophys?
Treatment?
Hemochromatosis
- HFE gene 282Y
- increased intestinal iron absorption which is normally regulated by Hepcidin
- treat with phlebotomy
- women delayed symptoms due to menstruation
A1-AT function?
- produced in hepatocytes
- inhibits elastase
Most common deficient allele in A1-AT?
z allele results in emphysema and eventual cirrhosis
Child with jaundice, ascites, and poor nutrition.
Diagnosis?
A1-AT
Adolescent with anorexia, ascites, and peripheral edema.
Diagnosis?
A1-AT
Diagnosis of A1-AT? Treatment?
- serum A1-AT
- PCR to detect Z
- treat symptoms
40 year old female with pruritus, fatigue, hepatosplenomegaly, xanthomas, elevated ALP and IgM, and antimitochondrial antibodies.
Diagnosis?
Treatment?
Primary Biliary Cholangitis
- T cell autoimmune interlobular duct damage
- treat with Ursodiol
- watch bone health
Man with ulcerative colitis, pruritis, and elevated ALP.
Diagnosis?
Primary sclerosing cholangitis
- fibrosis of intra and extra hepatic ducts
- diagnose with cholangiography
Man who doesn’t drink, has mildly elevated LFTs and hepatic steatosis.
Diagnosis?
Nonalcoholic fatty liver disease
- insulin resistance from obesity, DM, dyslipidemia, metabolic
- no inflammation
- inflammation seen in NASH
Young man with cirrhosis, Kayser fleisher rings around corneas, jaundice, and behavioral changes. Labs show decreased Ceruloplasmin and increased urine copper.
Diagnosis?
pathophys?
Treatment?
Wilson disease
- abnormal copper transport protein
- autosomal recessive
- treat with D-penicillamine, Trientine, or zinc to bind copper
First test if liver suggest cholestasis?
ultrasound
- 95% sensitive for gallstones
- noninvasive and cheap
- may miss small lesions
Uses for CT?
- hepatomegaly
- intrahepatic tumors
- portal HTN
- biliary tree dilation
-it is noninvasive but is expensive, uses contrast, and radiation
Use of MRI?
most accurate for liver lesions but is expensive and contrast can cause kidney problems
Use of PET?
smaller lesions and metastatic disease
Use of Cholescintigraphy (HIDA)?
cholecystitis or gallstone
Use of MRCP?
intrahepatic and extra hepatic bile ducts for gallstones, strictures, or dilatation and is noninvasive
Use of ERCP?
invasive but more reliable than MRCP and can extract stones or insert stents
-risk of pancreatitis
Use of PTC?
invasive evaluation of biliary tree
-risks fever, bacteria, peritonitis, hemorrhage
Treatment for fulminant hepatitis?
urgent transplant
Presentation of HAV?
Children asymptomatic
Adults symptomatic
HBsAg+ for 6 months?
Chronic HBV
HBsAg-, HBcAb+, HBsAb+?
past HBV resolved, no vaccine
HBsAg-, HBcAb-, HBsAb+?
immune, no vaccine
HBsAg-, HBcAb+, HBsAb-?
past HBV resolved, need vaccine
Extrahepatic manifestations of HBV?
- PAN
- MGN
- HCC
Treatment of HBV?
Entacavir or Tenofovir if:
- cirrhotic
- INR >1.5 and Br >3 (acute)
- chronic with extrahepatics
Superinfection with HDV?
chronic HBV is then infected with HDV on top
Coinfection of HBV and HDV?
most will clear HBV and then HDV will resolve
Acute HCV?
flu like symptoms with mildly elevated ALT
Chronic HCV?
- persistent 6 months
- low albumin, elevated INR, hyperBr, thrombocytopenia means advanced cirrhosis or HCC
Pregnant woman from another country presents with liver issues and dies.
Diagnosis?
HEV
Micronodular cirrhosis?
alcoholic hepatitis
AST:ALT elevated 2:1, elevated GGT, and elevated MCV.
Diagnosis?
Acute alcoholic hepatitis
-treat by abstaining from alcohol
Inflammation, fibrosis, and steatosis with no history of alcohol.
Diagnosis?
NASH
-treat with aerobic exercise and bariatric surgery
Patient with elevated liver enzymes, what should you always ask?
new medications, OTC, herbal supplements
Most common cause of acute liver failure in US? Treatment?
acetaminophen
- safe 1-4mg/day
- treat with N-acetylcysteine
Type 1 autoimmune hepatitis antibodies? Treatment?
ANA
ASMA
anti-F actin
- must biopsy
- treat with immunosuppression
95% of portal HTN caused by?
intrahepatic (cirrhosis)
Causes of ascites?
- cirrhosis (75%)
- Neoplasms (10%)
- CHF (5%)
- hypoalbumin
Tests performed on ascites?
paracentesis
- high albumin gradient > 1.1mg (cirrhosis)
- low gradient (nephrotic)
- ANC >250 (bacterial peritonitis)
Treatment of cirrhotic ascites?
- abstain from alcohol and salt
- moderate ascites- use diuretic
- refractory- remove fluid and consider TIPS or liver transplant
Spontaneous bacterial peritonitis? Pathophys? Organism? Treatment?
complication of ascites
- infection of ascitic fluid without intraabdominal source
- bacteria traverse into LN
- E. Coli most common
- ANC >250
- Treat with 3rd gen Cephalosporin
Treatment of varices?
- IVF and blood with clotting factors
- Octreotide
- somatostatin splanchnic vasoconstrictor - Control bleeding with Endoscopy
- Liver transplant
Patient with low BP, bounding pulses, jaundice, clubbing, palmar erythema, spider nevi, edema, and ascites.
Diagnosis?
Hepatorenal syndrome
How to diagnose hepatorenal syndrome?
- low GFR (need diuretic withdrawal)
- urine Na <10mmol
- Urine osmolality > plasma
Type 1 hepatorenal?
- double creatinine
- > 221umol/L
- GFR <20cc/min
- hypotension
- death in 8-10 weeks
- treat with vasoconstrictors, dialysis, and fluids
TIPS treatment?
- reduces portal pressure
- connects portal vein to hepatic veins
- suppresses RAAS
Definitive treatment for hepatorenal?
- liver transplant
- limited benefit in type 1 because they die before operation
Patient with cirrhosis, asterixis, and mental status change.
Diagnosis?
Pathophys?
Treatment?
Hepatic encephalopathy
- necessary to diagnose fulminant hepatitis
- increased ammonia and gut toxins get to brain due to lack of liver breakdown
- usually a precipitating cause like electrolyte imbalance, GI bleed, Drugs, infection, diet
- treat by lactulose which increases gut H+ that binds NH3
- Neomycin, Metronidazole, Rifaximin
Why osteoporosis in cirrhosis?
- malabsorption of Vit D
- decreased calcium ingestion
- bone resorption > formation
-screen with DEXA
What is the first indication of Portal HTN?
Splenomegaly
-TTP, Leukopenia, recurrent infections
Why does coagulopathy occur in cirrhosis?
decreased synthesis of clotting factors
- Vit K dependent (2, 7, 9, 10)
- treat with IV Vit K
Impaired clearance of anticoagulants
TTP from splenomegaly