Lactulose: Mechanism of Action as an Osmotic Laxative

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Questions and Answers

What is the mechanism of action of Pancrelipase?

  • To block the release of HCl in response to gastrin
  • To suppress the secretion of gastric acid and lower the concentration of H+ ions in the stomach
  • To increase the digestion of fats, carbohydrates, and proteins in the GI tract (correct)
  • To increase the secretion of HCL into the lumen of the stomach

What is a potential adverse effect of long-term use of PPIs?

  • Increased bone loss and hypertension (correct)
  • Increased digestion of fats, carbohydrates, and proteins
  • Decreased risk of pneumonia
  • Increased risk of fibrosis

What is the recommended dosage of Pancrelipase for adults and children > 4 years old?

  • Up to 1,500 lipase units/kg/meal
  • Up to 2,500 lipase units/kg/meal (correct)
  • Up to 5,000 lipase units/kg/meal
  • Up to 10,000 lipase units/kg/meal

What is the mechanism of action of Psyllium?

<p>It promotes defecation and resumption of normal bowel function (C)</p> Signup and view all the answers

What is the recommended administration of Pancrelipase?

<p>Immediately before or with meals/snacks (A)</p> Signup and view all the answers

What is a potential indication for the use of H2 antagonists?

<p>Treatment of active duodenal ulcer or benign gastric ulcer (C)</p> Signup and view all the answers

What is the primary mechanism of action of lactulose as an osmotic laxative?

<p>It increases the osmotic pull of fluid into the GI tract (D)</p> Signup and view all the answers

What is the primary risk factor for the development of gallstones?

<p>Abnormalities in the composition of bile (A)</p> Signup and view all the answers

What is the characteristic of chronic pancreatitis that distinguishes it from acute pancreatitis?

<p>Irreversibility of pancreatic function (C)</p> Signup and view all the answers

What is the primary symptom of GERD?

<p>Heartburn/pyrosis (B)</p> Signup and view all the answers

What is the characteristic of Crohn's disease that distinguishes it from ulcerative colitis?

<p>Affecting any area of the GI tract (D)</p> Signup and view all the answers

What is the primary mechanism of action of lactulose in patients with cirrhosis?

<p>Decreasing the amount of toxins in the blood (D)</p> Signup and view all the answers

What is the primary complication of appendicitis if left untreated?

<p>Perforation (B)</p> Signup and view all the answers

What is the primary mechanism of action of Ondansetron?

<p>Antagonizing the serotonin receptors on the afferent vagal neurons (B)</p> Signup and view all the answers

What is the primary factor that contributes to the development of diverticulosis?

<p>All of the above (D)</p> Signup and view all the answers

What is Ondansetron primarily used to treat?

<p>Nausea and vomiting associated with chemotherapy and radiation therapy (A)</p> Signup and view all the answers

What is the class of medications that Ondansetron belongs to?

<p>5-HT3 Receptor Blockers (A)</p> Signup and view all the answers

What is the primary teaching point for patients with GERD?

<p>All of the above (D)</p> Signup and view all the answers

What is the primary characteristic of intussusception?

<p>Telescoping of bowel into adjacent segment (C)</p> Signup and view all the answers

What is the name of the zone where Ondansetron blocks the serotonin receptors?

<p>Chemoreceptor Trigger Zone (CTZ) (D)</p> Signup and view all the answers

What is the memory trick to remember Ondansetron?

<p>Drug ends in TRON; think T as in hT3 (D)</p> Signup and view all the answers

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