Gastroenterology Flashcards
Is FDA-approved for the treatment of opioid-induced constipation in adults with chronic non-cancer pain?
Oral naloxegol (Movantik) is a peripherally acting mμ-opioid receptor antagonist
Patients with hepatitis B infection in the immune-tolerant phase (i.e phase with no hepatic inflammation & no fibrosis) require?
Serial monitoring of aminotransferase levels. No treatment
There are four typical phases of HBV infection: (1) immune tolerant, (2) immune active, (3) immune control (inactive), and (4) reactivation.
Should you discontinue aspirin In patients with established cardiovascular disease who is about to undergo colonoscopy with polypectomy?
No, Aspirin should not be held before or after colonoscopy
The most common cause of abnormal liver test results in the United States
Nonalcoholic fatty liver disease
Risk factors include obesity, diabetes mellitus, insulin resistance, hypertension, and hyperlipidemia. Alkaline phosphatase (ALP) levels may be slightly elevated as well, typically less than 2 to 2.5 times the upper limit of normal. The finding of a hyperechoic liver on ultrasonography is also consistent with NAFLD.
Is caused by a tumor at the gastroesophageal junction infiltrating the myenteric plexus causing esophageal motor abnormalities; symptoms, barium-imaging and manometric findings, and endoscopic appearance are similar to achalasia
Pseudoachalasia
Can reduce abdominal pain and bloating and improve stool consistency, frequency, and urgency in patients with diarrhea-predominant irritable bowel syndrome?
A low-FODMAP (Fermentable Oligosaccharides, Disaccharides, Monosaccharides, And Polyols) diet
Patients with dysphagia associated with regurgitation of undigested food & halitosis should be evaluated with?
a barium esophagram for the presence of a Zenker diverticulum
The diagnosis of hepatopulmonary syndrome is made by demonstrating an arterial oxygen tension less than 80 mm Hg (10.7 kPa) breathing ambient air, or an alveolar-arterial gradient of 15 mm Hg (2 kPa) or greater, along with evidence of intrapulmonary shunting on?
Echocardiography with agitated saline or macroaggregated albumin study
Acalculous cholecystitis can present with biliary colic symptoms in the alert patient or with unexplained leukocytosis, sepsis, and jaundice in the critically ill patient. What’s the treatment?
Cholecystostomy tube placement
In patients requiring NSAIDs, an evidence-based treatment strategy to prevent recurrent NSAID-induced peptic ulcers is the use of
A cyclooxygenase-2 selective NSAID plus a proton pump inhibitor
Patients with small (<10 mm) hyperplastic polyps on baseline colonoscopic examination should undergo surveillance colonoscopy in?
10 years
Serrated polyps are classified into three histologic types: hyperplastic polyps, sessile serrated polyps, and traditional serrated adenomas. Hyperplastic polyps are the most common type of serrated polyp. They are non-neoplastic and are composed of normal mucosal elements; small hyperplastic polyps, often found in the rectosigmoid colon, are believed to have no clinical significance. As a result, the interval until the next screening examination is 10 years, the same as for patients who do not have polyps found on baseline examination. Sessile serrated polyps (also known as sessile serrated adenomas) and traditional serrated adenomas are both neoplastic and are precursors to colorectal cancer; they should be completely excised.
Patients who have cholangitis with evidence of biliary obstruction should be treated with antibiotic therapy and biliary decompression with
Endoscopic retrograde cholangiopancreatography (ERCP)
Esophageal stricture in patients with eosinophilic esophagitis requires treatment with?
Endoscopic dilation when symptoms do not respond to medical therapy (swallowed aerosolized fluticasone).
Toxic megacolon is defined by the presence of toxicity and evidence of colonic dilation; it requires
Prompt surgical treatment
Is a cause of nonbloody, watery diarrhea in older adults and is diagnosed by colonoscopy with random biopsies from multiple colonic segments.
Microscopic colitis
Almost all patients (>90%) with autoimmune pancreatitis enter clinical remission in response to?
Glucocorticoids
Note: typical symptom of painless jaundice & the characteristic “sausage-shaped” pancreas on imaging, the patient has type 1 autoimmune pancreatitis, a frequent manifestation of IgG4 disease. He also has associated IgG4-related conditions, sialadenitis, and probable retroperitoneal fibrosis.
Upon recognition of acute fatty liver of pregnancy?
The fetus should be delivered immediately
The finding of a gallbladder polyp larger than 1 cm in size, or a polyp of any size associated with gallstones, is an indication for
Cholecystectomy even if the patient is asymptomatic
After eradication therapy, consisting of amoxicillin, clarithromycin, and omeprazole, for Helicobacter pylori infection,
Eradication should be confirmed using the urea breath test or fecal antigen test.
For patients with mild gallstone pancreatitis, treatment should include
Same-admission cholecystectomy reduces rates of gallstone-related complications compared with cholecystectomy after hospital discharge
Indications for endoscopic retrograde cholangiopancreatography in patients with primary sclerosing cholangitis are:
bacterial cholangitis (presents with fever, rigors, right-upper-quadrant pain, and leukocytosis). increasing jaundice, increasing pruritus, or a dominant stricture on imaging
Red-flag symptoms such as rectal bleeding with iron deficiency anemia, abdominal pain, and weight loss should prompt evaluation by
colonoscopy for colorectal cancer regardless of the patient’s age or the presence of bleeding hemorrhoids
Is a centrally mediated disorder of gastrointestinal pain characterized by a paradoxical increase in abdominal pain with increasing doses of opioids
Narcotic bowel syndrome, also known as opiate-induced gastrointestinal hyperalgesia
Treatment of chronic pancreatitis–related persistent pain should proceed in a stepwise approach beginning with
lifestyle modifications (discontinue alcohol and cigarettes) and the use of simple analgesics (acetaminophen, NSAIDs)
Mild hepatitis B virus–related polyarteritis nodosa is treated with
Antiviral agents e.g. Entecavir
Note: Sofosbuvir and ledipasvir are direct-acting antiviral agents used to treat hepatitis C virus (HCV) infection
_____________________ is preferred in patients with acute pancreatitis because of the benefit of maintaining a healthy gut mucosal barrier to prevent translocation of bacteria.
Enteral Nutrition
Is indicated for patients at high risk for the development of spontaneous bacterial peritonitis, including patients with very low ascitic-fluid protein levels and those with advanced liver failure?
Primary prophylactic antibiotic therapy e.g. Cipro
Rapid gastric emptying of hyperosmolar chyme into the small intestine after partial gastric resection can lead to postprandial vasomotor symptoms, abdominal pain, and diarrhea, collectively known as
Dumping syndrome
Treatment of chronic idiopathic constipation in adults with symptoms refractory to first-line therapies?
Linaclotide (Linzess) is a peripherally acting guanylate cyclase-C receptor agonist
Pregnant women who have hepatitis B virus DNA levels greater than 200,000 IU/mL at 24 to 28 weeks’ gestation should be treated with?
Tenofovir or Lamivudine or Telbivudine to prevent vertical transmission during delivery. Tenofovir is preferred over telbivudine and lamivudine due to lower rates of resistance.
Note: Pegylated interferon is not considered safe in pregnancy and, therefore, would be an inappropriate choice for this patient.
This must be considered as a cause of acute pancreatitis in patients older than age 40 years when no other cause has been identified and/or when worrisome features, such as weight loss or new onset of diabetes mellitus, are present?
Pancreatic neoplasm
CT abdomen w/ contrast can help with diagnosis
Once endoscopic hemostasis has been achieved in a patient with gastrointestinal bleeding, anticoagulation should be
Anticoagulation e.g Warfarin should be reinitiated now, and in most cases, this can be done on the same day as the procedure
Best screening test for celiac disease?
Anti–tissue transglutaminase (tTG) IgA antibody testing
After treatment of colon cancer, patients should undergo surveillance colonoscopy
1 year after diagnosis
What is the best management option for high-risk cystic lesions of the pancreas, such as intraductal papillary mucinous neoplasms that involve the main duct
Surgical resection
Hematochezia associated with hemodynamic instability in a young patient is likely due to an upper gastrointestinal source & should be diagnosed with?
EGD
Patients with this type of diarrhea may pass liters of stool daily, causing severe dehydration and electrolyte disturbances, with persistent stooling despite fasting?
Secretory diarrhea
Colonoscopy results in Crohn disease show patchy distribution of mucosal inflammatory changes with “skip areas” of normal intervening mucosa, and biopsy results for involved mucosa show features of chronicity
distorted and branching colonic crypts