Anesthesia
Pharmacology: Gastrointestinal Pharmacology Practice Questions
Choose the correct answer for each question.
Cisapride pharmacological and physiological characteristic(s):
- 5-HT4 agonist
- Weak 5-HT3 antagonist
- Both
- Neither
Cisapride:
- Exhibits prokinetic properties but this agent is not commonly available in the United States because of serious side effects.
- Metabolized by the liver utilizing mainly the CYP3A4 isoform of the cytochrome P450 microsomal metabolizing system.
- Both
- Neither
Cardiac arrhythmias associated with cisapride administration is likely a consequence of drug-induced prolongation of the QT interval.
- True
- False
Limited-access program(s) for patients to receive cisapride:
- GERD
- Refractory severe chronic constipation
- Both
- Neither
Limited-access program(s) for patients to receive cisapride:
- Intestinal pseudoobstruction
- Gastroparesis
- Both
- Neither
Cisapride contraindication(s):
- Patients with prolonged QT intervals
- Patients with renal failure
- Patients with ischemic heart disease
- A & B
- B & C
- A & C
- A, B & C
Cisapride contraindication(s):
- Patients with congestive heart failure history
- Patients with respiratory failure
- Unresolved electrolyte abnormalities
- A & B
- B & C
- A & C
- A, B & C
Prucalopride (Resolor):
- 5-HT4 receptor agonist
- Increases cholinergic neurotransmission
- Both
- Neither
Prucalopride administration increases colonic an oral-cecal transit while not altering gastric emptying in normal subjects.
- True
- False
Classified as a 5-HT4 partial agonist:
- Alosetron
- Tegaserod
- Prucalopride
- Metoclopramide