GI Flashcards
A pt presenting with progressive dysphasia to both liquids and solids at same time and regurgitation several hours after meals suffers from …
Achalasia (inability to relax LES)
What is the best initial test for Achalasia?
barium swallow (bird’s peak)
What is the most accurate test for Achalasia?
manometry (increased LES pressure; decreased LES tone)
What is the best initial treatment for Achalasia?
pneumatic dilation (followed by Botox, myometry)
An older pt who drinks and smokes presents with progressive dysphasia that starts as just to solids and progresses to liquids and weight loss most likey suffers from …
Esophageal cancer (Squamous cell) (associated with long standing GERD)
What type of cancer occurs in proximal 2/3 of esophagus?
Squamous cell carcinoma
What type of cancer occurs in distal 1/3 of esophagus?
Adenocarcinoma
What is the best test for esophageal carcinoma?
Endoscopy w/ biopsy
do CT scan for local spread; endoscopic U/S for staging
What is the most accurate test for esophageal dysphagia in scleroderma patients?
motility study
What is the best treatment for pts with esophageal dysphagia and scleroderma?
PPI (can add metoclopramide)
A pt with intermittent chest pain along with dysphasia, usually precipitated by cold liquids most likely suffers from …
diffuse esophageal spasm/ Nutcracker esophagus
What is the finding on barium swallow for Nutcracker esophagus/ diffuse esophageal spasm?
corkscrew appearance (at time of spasm)
What is the most accurate test for Nutcracker esophagus/ diffuse esophageal spasm?
manometry (high intensity, disorganized contractions)
What is the treatment for Nutcracker esophagus/ diffuse esophageal spasm?
- calcium channel blockers (nifedipine)
2. nitrates
A patient with history of regurgiting undigested food, especially at night, and can express food via pushing on their throat most likely suffers from ….
Zenker’s Diverticulum
What is the best initial test for Zenker’s diverticulum?
Barium studies
What is the treatment for Zenker’s diverticulum?
surgery (avoid endoscopy, NG tubes)
…. is thin epithelial membranes made from squamous cells located at squamocolumnar junction proximal to LES that causes intermittent dysphagia
Scatzki’s rings
… are epithelial membranes made of squamous cells loacted in hypopharynx, causes intermittent dysphagia, associated with iron deficiency and squamous cell cancer
Plummer-Vinson syndrome
tx w/ dilation and iron
An HIV pt with CD4 count less than 200 presenting with odynophagia (pain with swallowing) most likely presents with ….
Candida esophagitis
What is the treatment for Candida esophagitis?
fluconazole
A patient on bisphosphonates or acne meds presenting with odynophagia most likely suffers from …
Esophagitis (due to pill)
treat with swallow pill in upright position with lots of water
A pt presents with painless upper GI bleed after repeated episodes of retching and vomiting most likely presents with …
Mallory-Weiss syndrome
What is the diagnostic tool of choice for Mallory-Weiss syndrome?
endoscopy
What treament is used for Mallory Weiss syndrome?
- nothing
2. can inject epi or cauterize if necessary
What test for H. pylori is not affected by PPI use?
H. pylori ELISA
When should a pt with epigastric pain undergo endoscopy?
- older than 55 y/o
- alarm symptoms (bleeding, weight loss, dysphagia)
- if symptoms not resolved with PPI
What is the most accurate test for GERD?
24 hour pH monitoring
A pt presents with epigastric pain, sore throat, metallic taste, hoarseness and cough most likely suffers from…
GERD
What is the next best step in a patient presenting with GERD or signs of peptic ulcer disease (<45 y/o) without alarming symptoms?
treat with PPI
What things should people avoid if they have GERD?
- nicotine
- alcohol
- chocolate
- caffeine
What is the surgical treatment for GERD and when is it indicated?
Nissen fundoplication
- refactory side effects of PPI (headaches, diarrhea)
- no response to PPI
…. is a complication of long standing reflux in which epithelium of lower esophagus changes from squamous to columnar
Barrett’s esophagus
How often should endoscopy be repeated in pts with Barrett’s esophagus?
every 2-3 years
every 3-6 months if low grade dysplasia
What is the best treatment for Barrett’s esophagus?
PPI
A patient with midepigastric pain that is relieved by eating and not associated with weight loss is most likely …
Dudodenal ulcer
A patient presenting with epigastric pain that is worsened by food and associated with weight loss is most likely …
Gastric ulcer
always biopsy to exclude cancer
What tests are used to assess whether H. pylori treatment was successful or if recurred after remission?
- urea breath test
2. stool antigen
What are the two most common causes of peptic ulcer disease?
- H. pylori
2. NSAIDs use
What is the treatment for H. pylori associated peptic ulcers?
- clarithromycin
- amoxicillin
- PPI
(for 10-14 days)
What are the indications for stress ulcer prophylaxis?
- mechanical ventilation
- burns
- head trauma
- severe coagulopathy with sepsis
A patient presents with peptic ulcer disease despite max dose of PPI and H2 blocker and associated diarrhea most likely suffers from …
Zollinger-Ellison syndrome
diarrhea due to lipase inactivation by acids
What are the diagnositic for Zollinger-Ellison syndrome?
- elevated gastrin level with pt off PPI/H2 blocker for few days
- secretin stimulation (positive if elevated gastrin)
What diagnostic tools are used to assess whether gastrinoma is metastasized?
- Somatostatin-recpetor scintigraphy
2. endoscopic ultrasound (most sensitive)
A poorly controlled diabetic presents with early satiety, post-prandial nausea, abdominal fullness and bloating most likely suffers from …
gastroparesis
b/c can’t feel stretch so no gastrin release
What is the treatment for gastroparesis?
- erythromycin
2. metoclopramide
What disease can occur in a pt with history of vagotomy and gastric resection for severe peptic ulcer disease?
Dumping syndrome
What is the sequence of events involved in dumping syndrome?
- rapid release of chyme in duodenum –> osmotic draw –> intravascular volume depletion
- rapid release of chyme in duodenum –> peak of glucose –> rapid release of insulin –> hypoglycemia
A pt presents with sweating, shakiness, palpitations and lightheadedness shortly after a meal most likely suffers from ..
Dumping syndrome
What is the treatment for Dumping syndrome?
eat multiple, small meals
A pt who has epigastric pain but all other causes have been excluded most likely suffers from ..
Non-ulcer dyspepsia
treat via symptomatic relief
What are the findings on endoscopic exam for Crohn’s disease?
skip lesions with transmural inflammation throughout bowels
What are findings in barium studies for Crohn’s disease?
string sign
What is the difference between Crohn’s disease and Ulcerative colitis?
Crohn: skip lesions, trasmural, fistula formation, granulomas forming abdominal masses, through GI tract
UC: no skip lesions, mucosal, no fistulas,no granulomas, only in colon, bloody diarrhea
A pt presenting with fever, diarrhea, weight loss, and abdominal pain that has positive for Anti-Saccharomyces cerevisiae antibodies most likely suffers from …
Crohn’s disease
A pt presenting with fever, diarrhea, weight loss, and abdominal that has positive ANCA (anti-neutrophil cytoplasmic antibody) most likely suffers from …
Ulcerative colitis
What are treatments for chronic treatment of Crohn’s disease?
- pentasa (mesalamine derivative)
- azathioprine
- 6-MP
- Infliximab (if fistula or refractory to others; test for TB first)
What is use for acute exacerbations of Ulcerative colitis and Crohn’s?
Budesonide (steroids)
What treatments are used for chronic treatment of Ulcerative colitis?
- asacol, rowasa, sulfasalazine (mesalamine derivatives in colon)
- azathioprine
- 6-MP
What are common side effects of sulfasalazine?
- reversible infertility in men
- leukopenia
- sulfa effects (rash, hemolysis, allergic interstitial nephritis)
What is a side effect that can occur with the use of azathioprine and with the use of 6-MP?
drug-induced pancreatitis
What is the most important thing to do before starting treatment with infliximab?
test for latent TB with PPD
can induce re-activation of TB
What is the first thing to do in a patient with diarrhea?
assess for hypovolemia (hypotensive or orthostatic hypotension; tachycardia)
What tests should be done to exclude infectious diarrhea?
- fecal leukocytes
- stool culture
- ova and parasite exam
- C. difficile toxin (if clues in hx)
- Giardia-ELISA antigen testing (if clues in hx)
What are the two most common causes of infectious diarrhea?
- Campylobacter
2. Salmonella
A pt develops diarrhea and vomiting shortly after eating Chinese food most likely suffers from …
Bacillus cereus infection (pre-formed toxins)
A pt has history of diarrhea and develops Guillian Barre syndrome or reactive arthritis most likely had diarrhea due to …
Campylobacter
What are the most likely causes of diarrhea in an HIV pt with CD4 count less than 100?
- Cryptosporidia
2. isopora
A pt develops diarrhea (bloody) after eating a hamburger most likely is infected with …
E.Coli 0157:H7
What is a common complication of infection with E. Coli 0157:H7?
HUS (hemolytic uremic syndrome)
- avoid abx b/c organism already dead at this point
- avoid platelet tranfusion b/c make it worse
A camper or mountain hiker develops diarrhea with abdominal fullness, bloating and gas most likely suffers from ….
Giardia
associated with fat and vitamin malabsorption
A pt develops diarrhea after ingesting chicken, eggs, and dairy products most likely suffers from …
Salmonella
A pt develops diarrhea, flushing, wheezing, and vomiting within minutes of eating fish most likely suffers from …
Scombroid infection (release histamine into fish)
What are the most common causes of diarrhea in an iron overloaded patient (hemochromatosis)?
- Yersinia
- Shigella
- Vibrio vulnificus
What infectious diarrheal organism can mimic appendicitis?
Yersinia
A pt presents with hx of chronic liver disease and diarrhea after eating raw shellfish (muscles, oysters, clams) most likely suffers from …
Vibrio (vulnificus and parahaemolyticus)