GI* Flashcards
Chief cells secrete what? parietal?
pepsin; HCL
Ach causes what to happen in the stomach?
rest and digest
What does the pancreas release for digestion?
lipase - fat
amylase - starches
trypsin - protein
What drug can you use for flushing and diarrhea associated with carcinoid syndrome as well as for VIP secreting tumors? Can use for bleeding esophageal varices. What is it an analog to?
octreotide
somastatin analog which goes against digestion and growth hormone, decreases splanchnic circulation
What stones are radioopaque?
calcium oxalate
calcium phosphate
struvite
What is the difference between and abd xray and a lower GI series?
Lower GI uses barium enema to look at colon (don’t use if perforation is suspected)
abd xray looks at large, small intestines, stomach, pancreas, liver, spleen
MC cause of esophagitis?
GERD
Meds that cause esophagitis?
bb, ccb, bisphosponates, NSAIDS
tx of CMV esophagitis? Description?
large ulcers
ganciclovir
Multiple corrugate rings on endoscopy of the esophagus points to what?
eosinophilic esophagitis
What are alarm symptoms of GERD?
dysphagia
odynophagia
WL
bleeding
Gold standard of GERD dx?
24 h ambulatory ph monitoring
What is the main problem in achalasia?
failure of LES relaxation (opposite of GERD)
Dx achalasia?
manometry
what is nutcracker esophagus?
excessive contractions during peristalsis
how do you dx zenker’s diverticulum?
barium esophogram
What is boerhaave syndrome?
full thickness rupture of distal esophagus (repeated vomiting or iatrogenic)
Def dx of boerhaave?
contrast esophagram with gastrografin swallow
dx of esophageal webs?
barium swallow
What is first line to reduce re-bleeding of esophageal varices?
beta blockers
How do manage acute esophageal varices bleed?
2 large bore needles => IV fluid
possible blood transfusion
ligation with edoscopy
Octreotide/vasopressin
baloon tamponade
surgical decompression
Which hiatal hernia needs surgery to prevent strangulation?
type II “rolling hernia”
Pt has dysphagia to solid foods progressing to liquids, odynophagia, WL, chest pain, anorexia, cough, and hoarseness. What would you suspect and how do you dx?
esophageal neoplasm- adenocarcinoma
upper endoscopy
What are the two main causes of dysphagia? Name some of each type
mechanical or motility
mechanical: peptic stricture from gerd, progressive schatzki rings intermittent dysphagia cancer eosinophilic esophagitis (could be more too)
motility:
achalasia, can’t do solid or liquid progressive
diffuse esophageal spasms intermittent
scleroderma, chronic Gerd + raynaud
ineffective esophageal motility not with GERD
MC cause of PUD?
h pylori
second is NSAIDS
What are alarm symptoms of PUD?
WL dyspepsia >50 hx of gastric ulcer anorexia anemia dysphagia
Which ulcers are more common in PUD?
duodenal
4x more common
What is the best screening test for zollinger-ellison syndrome?
fasting gastrin levels (increased >1,000 pg/ml and gastric pH <2
how do you dx gastric carcinoma?
upper endoscopy with biopsy
What are the two types of gastric cancer?
intestinal (MC) irregular ulcer in the antrum, h pylori can cause
diffuse is signet ring cells that infiltrate, not associated with h pylori
What is hypertrophied in pyloric stenosis?
pyloric smooth muscle
What is tx of pyloric stenosis?
myotomy
excess direct bilirubin leads to what?
light stools
dark urine
Is ALT or AST more sensitive to liver disease?
ALT
cholestasis will increase what?
ALP + GGT
What is the ratio in Etoh hepatitis?
AST>ALT s= “scotch”
an ALT > 1000 points to what?
autoimmune hepatitis
what types of stones are in cholelithiasis?
cholesterol
black
brown
How do you dx choledocholithiasis?
ERCP
US often initial but a neg doesn’t rule out
What are the clinical manifestations of acute cholangitis?
1) RUQ pain
2) jaundice
3) fever/chills
(Charcot’s triad)
What is reynold’s pentad? associate with charcot’s triad
charcots (fever/chills, RUQ pain, jaundice) + shock + altered mental status
What is the gold standard to dx acute cholangitis?
cholangiography via ERCP
what is acute cholangitis? MC cause?
infection secondary to obstruction (usually organisms that ascend from the duodenum)
MC e coli
mc cause of acute cholecystitis?
e coli
what is a + boas sign?
referred pain to the right shoulder with acute cholecystitis
gold standard dx of acute cholecystitis?
HIDA scan
management of acute cholecystits?
NPO
iv fluids
antibiotics
followed by cholecystectomy
what is the mc cause of fulminant hepatitis?
acetominophen
What do you not give to teenagers/children recovering from a fever/viral illness?
aspirin
what is the manifestation of fulminant hepatitis?
encephalopathy
(ammonia is a neurotoxin and is not being cleared)
coagulopathy (bleeding)
hepatomegaly, jaundice
what labs are off in fulminant hepatitis?
Pt/INR > 1.5
increased ammnia
increased LFTs
hypoglycemia
what hepatitis viruses are associated with chronic hepatitis?
HBV 10% chronic, HCV 80% chronic, HDV
what are labs for viral hepatitis?
ALT> AST (both over 500)
increased bilirubinemia
how are the hepatitis viruses transmitted?
E, A feco-oral
C parenteral
B sexual, parenteral
D requires B
what is increased lab wise in hepatocellular carcinoma?
alpha feto protein
what is + in primary biliary cirrhosis?
anti-mitochondrial antibody
primary biliary cirrhosis vs primary sclerosing cholangitis
PBC- intrahepatic, need liver biopsy
both: increased ALP, GGT ALT, AST, bilirubin
PSC- intra/extra hepatic bile ducts, pANCA, UC
what analgesic do you give with acute pancreatitis?
demerol (meperidine)
mc cause of bowel obstruction in adults?
colorectal cancer
does CD or UC more often cause colorectal cancer?
UC
Which are more common, indirect or direct hernias?
indirect
indirect hernias are lateral to what structures?
lateral to inferior epigastric vessels
what are the classifications of hemorrhoids?
I- no prolapse
II- prolapse with defecation but then reduces
III- requires manual reduction
IV- irreducible and may strangulate
What type of veins are the problem with hemorrhoids?
submucosal protruding into the anal canal
pain with internal hemorrhoids signifies what?
a problem
pain with external hemorrhoids signifies what?
nothing, its normal
conservative tx for hemorrhoids?
sitz
topical corticosteroids
management of anorectal abscess?
WASH + IandD
I&D warm water analgesics sitz bath high fiber diet
pt with blond hair and blue eyes presenting with vomiting, mental delays, irritability, convulsions, eczema, and increased deep tendon reflexes would be textbook for what disorder?
phenylketonuria
can’t metabolize amino acids phenylalanine into tyrosine
mc cause of thiamine (b1) deficiency?
etoh
also B12 is affected
B9 (folate) and B12 (cobalamin) are the ones with macrocytic anemia
symptoms of b1 (thiamine) deficiency?
neurological
wernicke’s encephalopathy is caused by a deficiency in what?
thiamine (b1)
what classes of drugs stop diarrhea?
bismuth subsalicylate
opioid agonists (Lomotil, immodium)
anticholinergics
who do you not use pepto-bismol in?
kids after a viral illness (Reye’s=> hepatoencephalopathy
What are the anti-emetics?
Zofran (ondesartan)- blocks serotonin
Compazine (Prochlorperazine)- blocks dopamine
Phenergen (promethazine)- same
Reglan (metoclopramide)- same
what do you use for dystonic reaction of the dopamine blockers (compazine, phenergan, reglan) for vomiting?
diphenhydramine (benadryl)
“rice water stools”
cholera
what bugs cause non-invasive diarrhea? ie no blood or WBCs and what is the onset
staph- 6 hrs bacillus cereus- 1-6 hrs cholera e coli- 24-36 hrs c diff-
when do you not give anti-motility drugs?
invasive (bloody) diarrhea
What bugs cause invasive diarrhea? incubation?
campylobacter- 3 days shigella- 1-7 days salmonella- 6-48 hours yersinia enterohemorrhagic e coli- 4-9 days campylobacter
“pea soup stools”
typhoid
what are the differences between invasive and non-invasive diarrheas?
non-invasive: s bowel, large volume, vomiting, no blood/wbcs, no cell destruction
invasive: l bowel, small frequent volume, blood/wbc’s, mucous, cell damage
“frothy, greasy, foul diarrhea”
giardia
what are the causes of osmotic diarrhea?
(decrease with fasting)
lactulose, sorbitol, antacids whipple disease (bacterial overgrowth) tropical sprue (bacterial overgrowth) celiac sprue (rxn to alpha gliadin) pancreatic insufficiency lactose intolerance
what are the 2 most physiologic approaches to constipation?
fiber and bulk forming
what drugs are bulk forming in constipation?
psyllium
citrucel
fibercon
benefiber
What % of infants have reflux?
50%
What % of infants actually have esophagitis?
10%
What meds make heartburn worse?
antibiotics (tetracycline) bisphosphonates iron NSIADs anticholinergics CCB narcotics benzos beta agonists (albuterol) alpha blockers \+ others
When is an endoscopy warranted in GERD?
> 45 with new onset symptoms, long standing symptoms,
frequent symptoms, failure to respond to therapy, anemia, dysphagia, recurrent vomiting
What is the main clinical presentation of infectious esophagitis?
immunocompromised patient with odynophagia or dysphagia
What are the ulcers like in infectious esophagitis?
CMV/HIV deep large ulcers
HSV multiple shallow ulcers
candida is white plaques
Where does a zenker diverticulum form?
hypopharynx and esophagus
What is metoclopramide used to tx?
delayed gastric emptying (its prokinetic)
What are the options for tx h pylori?
PPI + clarithromycin + amoxicillin
PPI + clarithromycin + metronidazole
bismuth subsalicylate + tetra + metron + PPI
What % of PPD is caused by zollinger-ellison?
1%
MC lab finding of gastric carcinoma?
iron deficiency anemia
When do you evaluate someone with constipation for colon cancer?
> 50 and new onset constipation
Adhesions or hernias usually cause what kind of obstruction?
small bowel
MC cause of chronic or recurring abdominal pain?
IBS
When and who suffer from intussusception?
children after a virus
If an adult has an intussusception what is it mc cause by?
malignancy
What are 2 causes of gastritis/duodenitis? (8)
h pylori (type B gastritis in the antrum) alcohol NSAIDs injury burns sepsis surgery
What is strongly associate with gastric cancer?
h pylori
What is the differential for stomach pain?
PUD
gastritis
MI
malignancy
In zollinger-ellison what symptom can accompany stomach pain?
diarrhea
serotonin
What levels increase with secretin in a patient with zollinger-ellison?
gastrin
tx of zollinger-ellison?
PPI
resection
4 causes of diarrhea?
infectious
dietary (laxatives)
toxic
other GI disease (ZES)
What bacteria has the quickest onset for diarrhea?
staph aureus
1-7 hours
food
Where is salmonella poisoning from and what is the onset?
poultry
6-72 hrs
What are 4 causes of invasive, bloody diarrhea?
enterohemorrhagic ecoli
salmonella
shigella
campylobacter
What is tx for bugs that cause diarrhea?
c diff- metronidazole
giardia- same
cyclospora- bactrim
What is dietary recommendations for constipation?
15-20 grams of fiber
1.5-2.0 L of water per day
tx for bowel obstruction?
NPO
fluid
nasogastric suctioning
tx for volvulus?
endoscopic decompression
What things cause malabsorption?
bad digestion, absorption, blood flow
lactose intolerance pancreatic insufficiency infection celiac bile salt deficiency
dx studies for celiac? confirmative?
IgA antiendomysial (EMA) antitissue transglutaminase (anti-tTG)
biopsy confirms
tx for celiac?
avoid gluten
may need extra B12, iron, folic acid, Ca, vit D
may need prednisone
when do you need an antibiotic in CD?
with perianal disease, fissures, fistulae
metronidazole, cipro
best maintenance therapy for CD?
mesalamine
might block COX and prostaglandins in bowel
If a pt has an IBD and a toxic megacolon which IBD do they have?
UC
best way to dx CD and UC?
colonoscopy
For which IBD can surgery be curative?
UC
tx for UC?
topical aminosalycilates
steroids
dx of IBS?
exclusion and clinical
R/O bacteria, parasites, and lactose
CT or other to check colon
current jelly stools = what
intussusception
dx of intussusception in kids
barium enema (also therapeutic) don't use in adults
tx of intussusception in adults
CT
surgery
tx of diverticulitis
low residue diet
broad-spectrum antibiotics
cipro/bactrim/levo + metronidazole
tx for acute mesenteric ischemia and chronic?
surgical revascularization
hydration critical
how will chronic mesenteric ischemia present?
pain 10-30 minutes after eating
relieved by squating
confirm dx of mesenteric ischemia?
angiography
What is a toxic megacolon?
dilation and immobility of the colon
dx a toxic megacolon?
plain film
what are the types of colonic polyps?
inflammatory- non-neoplastic
hamartomatous- disorganized growth, peutz-jeghers
serrated- mixed malignant potential, includes hyperplastic group
adenomatous- 2/3’s of all colon polyps, neoplastic
Colon cancer is where as far as causing death?
3
follow lung and skin
what is used to monitor colorectal cancer?
CEA
tx for colorectal cancer?
resection and chemo
When is radiation used for colorectal cancer?
a rectal tumor
What is the difference between an abscess and a fistula?
abscess = infection
fistula = disease process
tx for fistula?
surgical
Where are most anal fissures?
posterior midline
tx for anal fissures?
sitz bath
bulking stool
topical nitroglycerin
What stage hemorrhoid reduces spontaneously?
Stage II
What stage hemorrhoids are managed by fiber and increased fluids?
I/II
Where does a fecal impaction normally occur?
rectum
tx for fecal impaction?
digital decompaction followed by saline enema
what causes anal cancer?
HPV
What are causes of appendicitis?
fecalith ** mc
infection
IBD
collagen vascular disease
what % of appendicits perforates?
20%
What are causes of pancreatitis?
cholelithiasis alcohol hypertiglyceridemia hypercalcemia trauma drugs penetrating PUD
what lab is most sensitive for pancreatitis?
lipase
tx of pancreatitis?
NPO
fluid
pain
what electrolyte gets thrown off in pancreatitis?
hypocalcemia
what diet helps chronic pancreatitis?
low fat
cancer at the head of the pancreas presents with what two things?
palpable gallbladder
jaundice
courvoisier sign
what % of those with gallstones develop disease?
30%
what is cholecystitis cause by?
obstruction of the bile duct
what is acute cholangitis?
common bile duct obstruction followed by ascending infection
charcot’s triad is what and points to what?
fever
RUQ pain
jaundice
ascending cholangitis
tx for ascending cholangitis?
metronidazole
+
cephalosporin, fluoroquinolone, ampicillin, gentamicin
if choledocholithiasis is present in acute cholangitis what is done?
cholecystectomy when stable
what is the mc presenting feature of primary sclerosing cholangitis?
jaundice and pruritis
what is the only tx with long-term survival benefit in pts with primary sclerosing cholangitis?
liver transplant
mc cause of acute hepatitis
viral
which hepatitis’s are self-limited?
A and E
hep D goes with what?
hep B
individuals in which age should be screened for hep C
1945-65
what is used for acetaminophen toxicity?
acetylcysteine
what lab is elevated in hepatic carcinoma?
alpha fetoprotein
when is a need biopsy performed in liver cancer?
not generally performed for fear of seeding
least common hernia?
femoral
what 2 dx imaging show pyloric stenosis?
US
barium swallow “string sign”
MC initial presenting symptom of biliary cirrhosis?
pruritus
pellagra (has a smooth tongue, diarrhea, pigmentation, etc) is from what deficiency?
niacin
food poisoning for “poorly refrigerated food” or from food before cooking
clostridium perfringens
onset of enterotoxic e coli food poisoning?
5-15 days
why is pruritus the mc onset symptom for biliary cirrhosis?
accumulation of bile salts
clinical presentation of acute cholangitis?
charcot triad
fever
RUQ pain
jaundice
primary biliary cirrhosis vs primary sclerosing cholangitis
PBC or primary biliary cholangitis: there is treatment, only ducts INSIDE, autoimmune
PSC: sclerosing
ducts INSIDE and OUTSIDE, IBD, no meds, needs MRI
octreotide vs sclerotherapy for esophageal varices?
octreotide is for acute bleeding
sclerotherapy for long-term management after BB
Therapy for mild, moderate, severe IBD
sulfasalazine for mild-mod, anti-inflammatory
prednisone for mod-sev
azathioprine for sev
riboflavin deficiency causes what
cheilosis
Anti-Saccharomyces cerevisiae antibodies (ASCA) goes with what disease
goes with Crohns
gilbert’s syndrome causes a rise in what?
serum bilirubin
what other bowel problem can present like an obstruction? what do you do?
ileus
restrict oral intake
a woman 40-60 with a chance finding of increased alk phos most likely has what
primary biliary cirrhosis
steps to managing an acute esophageal bleed
1) endoscopic ligation = tx of choice
2) octreotide drug of choice can be adjunct to endoscope
3) balloon tamponade if first two don’t work
4) surgical decompression with trans jugular intrahepatic portosystemic shunt (TIPS)
Ranson criteria
glucose > 200 age >55 LDH > 350 AST > 250 WBC > 16,000
clinical therapeutic for chronic pancreatitis
oral pancreatic enzyme replacement
ETOH abstinance
Pain control
Dx: epigastric pain of burning, gnawing hunger with symptoms worse at night. radiates to the back. dyspepsia is present, belching, bloating, distention, heartburn is also present
PUD
what markers can you follow in pancreatic cancer?
CEA
CA 19-9
diff between incarcerated and strangulated hernias
incarcerated: painful, enlarged, irreducible hernia, might have n/v
strangulated: incarcerated hernia with systemic toxicity