Diseases Related to GI Motility and Drugs to Treat Them
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Questions and Answers

Which condition is characterized by the inability of the lower esophageal sphincter to relax and the loss of peristalsis in the esophagus?

  • GERD
  • Colonic pseudo-obstruction
  • Achalasia (correct)
  • Gastroparesis
  • What is the condition where feces accumulates in the colon due to a lack of passage through it?

  • Achalasia
  • Colonic pseudo-obstruction (correct)
  • Gastroparesis
  • GERD
  • Which medication binds to and activates muscarinic ACh M3 receptors, resulting in increased motility?

  • Bethanechol (correct)
  • Dopamine
  • Neostigmine
  • Metoclopramide
  • What is the mechanism of action of Neostigmine in treating decreased GI motility?

    <p>Inhibits acetylcholinesterase</p> Signup and view all the answers

    Which drug class is Metoclopramide classified under to treat GI motility disorders?

    <p>Dopamine receptor agonists</p> Signup and view all the answers

    What is one side effect associated with Bethanechol use for treating GI motility disorders?

    <p>Bradycardia</p> Signup and view all the answers

    What is the mechanism of action of metoclopramide?

    <p>It inhibits D2 receptors, preventing inhibition of cholinergic smooth muscle stimulation, leading to increased GI smooth muscle stimulation and peristalsis of the esophagus and stomach.</p> Signup and view all the answers

    What is the primary clinical use of metoclopramide?

    <p>Treating patients with gastroparesis (delayed gastric emptying) associated with diabetes or postsurgical disorders.</p> Signup and view all the answers

    Which class of antibiotics stimulates motilin receptors on gastrointestinal smooth muscle, promoting peristalsis?

    <p>Macrolides</p> Signup and view all the answers

    According to the Bristol Stool Chart, what is considered an ideal stool form?

    <p>Soft and smooth, like a sausage or snake</p> Signup and view all the answers

    Which of the following is NOT a type of laxative mentioned in the text?

    <p>Prokinetic agents</p> Signup and view all the answers

    What is the mechanism of action of bulk-forming laxatives?

    <p>They absorb water, forming a bulk that distends the colon and promotes peristalsis.</p> Signup and view all the answers

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