Which of the following analgesics has the highest risk of gastrointestinal side effects?
Acetaminophen
Codeine
Fentanyl
Ketorolac
Explanation: Ketorolac is a potent NSAID that is used for the short-term management of moderate to severe pain. However, it has a high risk of gastrointestinal side effects, such as stomach ulcers, bleeding, and perforation. Therefore, it is usually used for a maximum of five days.
Incorrect options:
1) Acetaminophen - Acetaminophen is generally well-tolerated and has a low risk of gastrointestinal side effects.
2) Codeine - Codeine is an opioid analgesic that can cause constipation and nausea, but it does not have a significant risk of gastrointestinal side effects.
3) Fentanyl - Fentanyl is a potent opioid analgesic that is usually administered intravenously or transdermally, and it does not have a direct effect on the gastrointestinal tract.