IM Gastro Flashcards
Esophageal Disorders
dysphagia is the essential feature of the majority of esophageal disorders. dysphagia means difficulty swalllowing. Odynophagia is the proper term for pain while swallowing. both of these can lead to wieght loss (thus weight loss cannot be used to answer what is the most likely diagnosis question.
when severe esophageal disorders will aslo give anemia and hemepositive stool
when any of these alarm sx are present endoscopy should be performed to exclude cancer
alarm sx indicating endoscopy:
weight loss
blood in stool
anemia
Achalasia
definition/etiology
inability of the LES to relax due to a loss of the nerve plexus within the lower esophagus. etiology is not clear, aperistalsis of the esophageal body
Achalasia
what is the most likely dx
young pt (under 50)
progressive dysphagia to both solids and liquids at the same time
no association with alcohol and tobacco use
Achalasia
diagnostic tests
barium esophagram will show a birds beak as the esophagus comes down to a point
manometry is the most accurate test and will show a failure of the les to relax
xcr may show some abnormal widening of the esophagus, but cxr is neither very sensitive nor very specific
upper endoscopy shows normal mucosa in achalasion, however, endoscopy is useful in some pts to exclude malignancy
in the esophagus barium studies are acceptable to do first in most pts although
radiologic tests always lack the specifiticty of endoscopic procedures
in the esophagus what is diagnosed by biopsy
cancer and barrett esopahgus
Achalasia
treatment
cannot exactly b cured
nothing can restolr the normal function off the missing neurological control of the esophagus, all treatment is based on mechanical dilation
- pneumatic dilation: place an endoscope witht he ability to inflate a device that will enlarge the esophagus. effective in more than 80-80% of pts
- surgical sectioning or myotomy: can help to alleviate sx. surgery is more effective than pneumatic dilation and surgery
- botulinum toxin injection: this will relax the les but the effects will wear off in about 3-6 months, requiring reinjection
pneumatic dilation leads to peroration in how many pts?
less than 3%
Esophageal Cancer
What is the most likely dx
age 50 or older
dysphagia first for solids, followed later to syxphagia for liquids
association with prolonged alcohola nd tobaxxo use
more than 5-10 years of GERD sx
Esophageal Cancer
diagnostic tests
- endoscopy is indispensible, since only a biopsy can diagnonse cancer
- barium might be the best iniital test but no radiologic test can diagnose cancer
- ct and mri scans are not enough to diagnose esophageal cancer, they are used to determine the extent of spread intot he surrounding itssues
- PET scan is used to determine the contents of anatomic lesions if you are not certain whether they coitain cancer. PEt scan is often used to determine whether a cancer is resectable. lcoal disease is resectable and widely metastatic cancer is not
Esophageal Cancer
treatment
- no resection = no cure, resection is always the right thing to do
- chemotheraphy and radiation are sued in addition to surgical removal
- stent placement is sue dfor lesions that cannot be resected surgically just to keep the esophagus open for palliation and to improve dysphagia
for cancer thre radiologic test is
never the most accurate
the single word progressive (or from solids to liquieds is the most important clue to the diagnosis of
esophageal cancer
Esophageal spasm
the 2 forms of spastic disorders, diffuse esophageal spasm (DES) and nutcracker esophagus, are clinically indistinguishable. both present with the sudden onset of chest pain that is not related to exertion. therefore, at first it is impossible to distinguish them from some form of atypical oronary artery spasm or unstable angina. they can be precipitated by drinking cold liquieds. the case will describe sudden severe chest pain and the ekg and stres test will be normal
esophagram and endoscopy will be noraml
DES and nutcracker esophagus can be distingueished only by the most accurate test: manometry, which will show a different patter or abnoraml contraction in each of them
Esophageal spasm
treatment
esophageal spastic diorders are treated with ccb and nitrates this is similar to teh treatment of prinzmetal angina. PPis can improve a number of cases of spastic disease
Esophageal spasm
barium studes
can show a corkscrew appearance at the time of the spasm
Infectious Esophagitis
most common question
esophageal candidiasis in a person wtih AIDS
thrush does not need to be present in esophageal candidiasi
cmv andherpes can also cause esophageal infection over 90% in people with aids is candidiasis
trate empirically with fluconazole
if this doesnt work then do an endoscopy
iv amphotericin is used for confirmed candida not responding to fluconazole
nystatin only treats oral candida not esophageal
what pills cause esophagitis if prolonged contact
doxycycline, alendronate and KCl
dysphagia iwth HIV CD4<100
improvement with fluconazole
cointuen therapy and haart
dysphagia iwth HIV CD$<100
no improvement with fluconazole
perfrom upper endoscopy with biopsy
if there is large ulceration = cmv and treate with ganciclovir or foscarnet
if there is small ulcerations=HSV treat with acyclovir
rings and webs
schatzki ring and plummervinson syndrome both give dysphagia.
schatzki rings is often form acid reflux and is associated with hiatal hernia. this is a type of scarring or tightening (also called peptic stricture) of hte distal esophagus.
Plummer vinson syndrome is assocaited with iron dificiency anemia and can rarely transorm into squamous cell cancer. the iron difiicency is not caused by blood loss. Plummer-vinson is more proximal. rings are easiily detected on barium studies of the esophagus
schatzki ring on barium studies
distal narrowing of the esophagus
steakhouse syndrome
dysphagia from solid food associted with schatzki rings
schatzki rings is assocaited with
intermittent dysphagia and is tretaed with pneymatic dilation in an endoscopic procedure
Plummer vinson syndrome is treated with
iron replacement at first which may lead to resolution of the lesion
Zenker is associated with
bad smell and halitosis
Zenker Diverticulum
definition
outpocketing of the posterior pharygeal constrictor muscles
Zenker Diverticulum
sypmtoms
dysphagia
halitosis
regurgitation of food particles
can have aspiration pneymonia when the contents of the diverticulum end up in the lung
Zenker Diverticulum
diagnostic tests/treatment
barium studes
surgery there i sno medical therapy
do not answer what with zenkers
ng tube or upper endoscopy these can cause perforation
Scleroderma
mechanical immobitlity of the esophagus
present with sx of reflux and have a clear hx of sclerodermaor progressive systemic sclerossis
manometry shows decrased les pressure from inability to clos the LES
management is with ppis
manometry is the answer for
achalasia
spasm
scleroderma
Mallor-Weiss Tear
presents with upper gi bleeding after severe vomiting or retching,
repeated retching is followed by hematemsisi of bright red blood or by black stool
doe snot present with dysphagia
there is no specific thearpy and it will resolve spontaneously
severe cases are managed with an injection of epinephrine to stop bleeding or the use of electrocautery
boerhaave syndrome
full thickness tear
mallory-weiss is what type of tear?
nonpenetrating tear of only the mucosa
Epigastric pain
Definition
common, occuring in as much as 25% of the population at some point in their lives.
tenderness which is increased pain on palpation or pressure in the epigastric area, is far less common
Epigastric pain
endoscopy
the only way to get a precise diagnosis
Epigastric pain
diagnostic test
endoscopy is the only way to truly know the etiology from ulcer dz
radiology and barium are modest in accuracy but you cannot do a biopsy
Epigastric pain
What is the most likely dx
pain worse with good
gastric ulcer
Epigastric pain
What is the most likely dx
pain better with food
duodenal ulcer
Epigastric pain
What is the most likely dx
weight loss
cancer, gastric ulcer
Epigastric pain
What is the most likely dx
tenderness
pancreatitis
Epigastric pain
What is the most likely dx
bad taste, cough, hoarse
gerd
Epigastric pain
What is the most likely dx
diabetes, bloating
gastroparesis
Epigastric pain
What is the most likely dx
nothing
non-ulcer dyspepsia
Epigastric pain
treatment
PPO are always a good place to start
h2 blockers are not as effective but still work in 70% of pts
liquid antacids have roughly the same efficacy as H2 blockers
Epigastric pain
treatment
misoprostol
is always the wrong answer
RUQ pain
cholecystitis
biliary colic
cholangitis
perforated duodenal ulcer
LUQ pain
splenic rupture
IBS-splenic flexure syndrome
RLQ pain
appi
ovarian torsion
ectopic pregnancy
cecal diverticulitis
LLQ pain
sigmoid volvulus
sigmoid diverticulitis
ovarian torsion
ectopic pregnancy
Midepigastrium pain
pancreatitis
aortic dissection
peptic ulcer disease
GERD
definition/etiology
the inappropriate relaxation of the les, resulting in acidic contents of the stomach coming up into the esophagus
GERD
sx are worsened by
nicotine
alcohol
caffeine
chocolate
peppermint
late-night meals
obesity
GERD
what is the most likely dx
epigastric burning pain radiating up into the chest
pt also complains of sore thorat, bad taste in the mouth (metallic), hoarseness, or cough
do not need these extra sx to diagnose with gerd
there are no unique findings in GERD
it is a sx complex
GERD
diagnostic tests
most often diagnosed based on pt hx.
can do 24 hr Ph monitoring
when is endoscopy indicated with GERD
signs of obstruction such as dysphagia or odynophagia
weight loss
anemia or heme-positive stools
more than 5-10 years of sxto exclude barrett esophagus
What might GERD show on endoscopy
reness, erosions, ulcerations, strictures, or Barrett esophagus
GERD
treatment for all pts
lowe wieght if obese
avoid alcohol, nicotine, caffeine, chocolate, and peppermint
avoid eating at night before sleep (w/in 3 hours of bedtime)
elevate head 6 to 8 inches
GERD
treatment
mild or intermittent sx
liquid antacids or H2 blockers
GERD
treatment
persistent sx or erosive esophagitis
ppis
GERD
treatment
treatment of those not responsive to medical therapy
5% dont respond to treatment
surgical correction to tighten the LES
nissen fundoplication - warapping the stomach around the lower esophageal sphincter
endocinch - using a scope to place a suture around the LES to tighten it
local heat or radiation of LES to cause scarring
endoscopy will show nothing where there is only
pyrosis (heartburn)
Barrett Esophagus
long-standing GERD leads to histologic changes in the lower esophagus with columnar metaplasia
columnar metaplasia needs at least 5 years of reglux to develop.
there are no unique physical findings or lab tests
Barrett Esophagus
Diagnostic Tests/Treatment
biopsy is the only way to be certainof th epresence of Barrett esophagus and/or dyspepsi, this is indispensible bc the biopsy drives therapy. columnar metaplasia with intestinal features has the greatest risk of transforming into esophageal cancer
Management of Barrett’s Alone
PPi’s and rescope every 2-3 years
management of low grade dysplasia in Barrett Esophagus
PPi’s and rescope every 6-12 months
management of high-grade dysplasia in Barrett Esophagus
ablation with endoscopy: photodynamic therapy, radiofrequency ablation, endoscopic mucosal resection
what percentage of pts with barretts progress to esophageal cancer
0.5% each year
Gastritis
defintion
inflammation or erosion of the gastric lining that is sometimes called gastropathy
Gastritis is caused by
alcohol NSAIDS H. Pylori Portal htn stress like burns, trauma, sepsis, and multiorgan failure (uremia)
atrophic gastritis is associated with
B12 defiiciency
Gastritis
what is the most likely dx
often presents with gi bleeding w/o pain. severe, erosive gastritis can present with epigastric pain. nsaids or alcoholism in the hx is a clue
cannot answer this question from the hx and physical alone
can present with any degree of bleeding from mild “coffe ground emesis” to large volume of vomiting red blood , to black stool (melena)
there are no unique physical findings for
gastritis
Volume of bleeding in coffee-ground emesis
5-10 ml
Volume of bleeding in heme (guaiac positive) stool
5-10 ml
Volume of bleeding in melena
50-100 ml
Gastritis
Diagnostic Tests
only upper endoscopy can definitively diagnose erosive gastritis
although anemia ay occur there are not specific blood tests
upper GI radiology is not specific enough
Capsule endoscopy is not appropriate for upper GI bleeding if endoscopy is one of the choices
test for h pylori
Gastritis Treatment
treat with PPI’s before any of the other gerd treatments. sucralfate is the wrong answer
stress ulcer phophylaxid is indicated in
mechanical ventilation
burns
head trauma
coagulopathy
H Pylori Testing
endoscopic biopsy
the most accurate of all the tests
requires an invasive procedure such as endoscopy
H Pylori Testing
Serology
inexpensive, easily exluded infection if it is negative, no complications or procedures required
lacks specificity, a positive test does not easily tell the difference between current and precious infection
H Pylori Testing
Urea C13 and C14 breath testing
positive only in active infection, noninvasive
requires expensive equipment in office
H Pylori Testing
h pylori stool antigen
positive only in active infection, noninvasive
requires stool sample
Peptic Ulcer Disease
Definition
the term peptic ulcer disease refers to both duodenal ulcer and gastric ulcer disease. they cannot be distinguished definitively without endoscopy. The name is a misnomer based on the mistaken belief that they were caused by the protein digesting enzyme pepsin
Peptic Ulcer Disease
etiology
commonly caused by H Pylori.
NSAIDS are the second most common cause bc of their effect inhibiting the production of the protective mucus barrier in the stomach. they inhibit prostaglandins and prostaglandins produce the mucus
burns
head trauma
crohn disease
gastric cancer
gastrinoma (ZES)
nsaids produce more of what than pain
bleeding
alcohol and tobacco do what with ulcers
they dont cause them they delay their healing
Peptic Ulcer Disease
presentation/wht is the most likely diagnosis
pud presents with recurrent epidosed of epigastric pain that is described as dull, sore, and gnawing. although the most common cause of upper GI bleeding is pud, the majority of those with ulcers do not bleed. Tenderness and vomiting are unusual
cannot answer pud as the most likely dx based on symptoms alone
duodenal ulcer disease is mor often improved with
eating
gastric ulcer diseaseis more often worsened with
eating, so it is associated with weight loss
you cannot definitively diagnose what without endoscopy
DU, DU, gastritis and non-ulcer dyspepsia
there is no way to diagnose pud without
endoscopy or barium studies
Peptic Ulcer Disease
diagnostic tests
upper endoscopy is the most accurate test
radiologic testing such as an upper gi series can detect ulcers but cannot detect the presence of either cancer or H Pylor
H. Pylori Testing in Peptic Ulcer Disease
in those who are to undergo endoscopy, there is no point in doing noninvasive testing such as serology, breath testing, or stool antigen detection methods.
biopsy is the most accurate test H pylori
endoscopy is the only method of detecting
gastric cancer, it is present in 4% of people with Gastric ulcers and in 0% of people with Duodenal ulcers
Peptic Ulcer Disease
Treatment
responds to PPis in over 95% of cases, but will recure unless H pylori is eradicated in those infected
what percentage of Duodenal ulcers are associated with h Pylori
80 to 90%
what percentage of Gatric ulcers are associated with h pylori
50-70%
therapy of h pylori
ppi with clarithromycin and amoxicillin is best initial, if penicillin allergy than do metro instead
if pt doesnt respond to this then metronidazole and tetracycline can be used as alternate abs
adding bismuth to a change of abs may aid in resolution of treatment of resistant ulcers
retest with breath test to confirm cure of h pylori 30-60 days after therapy
treatment of refractory ulcers
if the initial therapy does not resolve the DU then detecting persistent h pylor and switchingthe abs to meto and tetra is appropriate.
for those with gu a repeat endoscopy is done to exclude cancer as a reason for not getting better
test for cure of h pylori after treatment with
stool antigen or breath test
Ulcer treatment failure most often stems from
nonadherence to meds
alcohol
tobacco
nsaids
Gastric ulcers
overview
the omst improtant reason to scop a pt is to exclude gu as a cause of the pain bc of the possibility of cancer
only way to exclude cancer is with biopsy
you can test for h pylori noninvasively but there is no way to exclude cancer noninvasively
Diff of GU and DU
Gu pain is worsened with food
Gu is biopsied
gu has cancer in 4% of pts
repeating the endoscopy to confirm healing is standard iwth GU
Non Ulcer Dyspepsia
Definition
epigastric pain that has no identified etiology
Non Ulcer Dyspepsia
diagnosis
can only be diagnosed after endoscopy
under 45 treat first, over 55 do scope to exclude cancer, in the middle it is unclear on what to do
Non Ulcer Dyspepsia
presentation
the pain can be identicalto gasgritis, pud, gasric cancer, or reflux disease
Non Ulcer Dyspepsia
treatment
if pt is under 45 treat empirically with antisecretory therapy such as ppis and scope only if it doesnt resolve
scope pts with dyspepsia if
pt is over 55 years old
alarm sx are present (dysphagia, weight loss, anemia)
most common cause of epigastric pain
Non Ulcer Dyspepsia
Non Ulcer Dyspepsia and h pylori
not associated but if origanal treatment with ppis doesnt resolve then try and treat h pylori
Non Ulcer Dyspepsia is epigastric pain with
a normal endoscopy
Gastrinoma (ZES)
what is the most likely diagnosis
look for a pt with ulcers that are:
large (>1-2 cm)
recurrent after h pylori eradication
distal in the duodenum
multiple
how many pts with an ulcer have a gastrinoma?
less than 1%
Gastrinoma (ZES)
Diagnostic testing
once endoscopy confirms the presence of an ulcer, the most accurate diagnostic test is:
High gastrin levels off antisecretory therapy (PPI's or H2 blockers) high gastrin levels despite a high gastric acid output persistent high gastrin elvels depsite injecting secretin
any one of these three, always a funtional test looking at the response to secretin
Gastrinoma (ZES)
imaging
most important issue is to exclude mets. ct and mri of the abdomen have poor sensitivity but are done first, neg mri or ct does not exclude mets
somatostain receptor scintigraphy (nuclear octreotide scan) is combined with endoscopic ultrasound to exclude mets. do these if the Ct and MRI are normal
Gastrinoma is often associated with diarrhea
bc acid inactivates lipase