Final answer:
Nitroglycerine is used to treat angina, and the decision to administer a narcotic analgesic depends on the patient's pain level and response to other treatments.
Step-by-step explanation:
In the medical field, the decision to administer a narcotic analgesic is based on the severity of pain and the effectiveness of other treatments.
Nitroglycerine is commonly used to treat angina, a type of chest pain caused by reduced blood flow to the heart.
The Narcotic analgesics are usually reserved for severe and uncontrolled pain that cannot be adequately managed by other means.
Therefore, the decision to administer a narcotic analgesic would depend on the patient's pain level and response to other interventions.