Final answer:
Morphine is not appropriate to be used to relieve ischemic discomfort of an acute coronary syndrome patient.
Step-by-step explanation:
The drug that is NOT appropriate to be used to relieve ischemic discomfort of an acute coronary syndrome patient is Morphine. While Morphine is often used before and after surgical procedures to alleviate severe pain, it is not typically used to relieve the ischemic discomfort of an acute coronary syndrome patient.