A patient is admitted with the diagnosis of variant or Prinzmetal angina. The nurse knows that the physiological mechanism present is most likely which of the following?

Rationale:
A. Should suggest that the patient receive epidural analgesia is incorrect because epidural analgesia is not the standard or first-line approach for pain management in acute pancreatitis. Pain is typically managed pharmacologically with systemic analgesics, usually opioids, rather than invasive regional anesthesia techniques.

B. Provides IV push analgesics as needed is incorrect because PRN dosing can lead to peaks and troughs in pain control. Waiting for pain to become severe before administering medication can increase stress, worsen pancreatic stimulation, and make pain more difficult to control.

C. Administers pain medication on a routine schedule is correct because scheduled analgesia maintains consistent pain relief, prevents pain escalation, reduces physiologic stress, and helps limit pancreatic stimulation. Continuous pain control is essential in acute pancreatitis to promote comfort and healing.

D. Provides oral pain medication on an “as needed” (PRN) basis is incorrect because patients with acute pancreatitis are often NPO and may not tolerate oral medications. Additionally, PRN oral dosing does not provide consistent pain control and is inadequate for severe pancreatic pain.

Rationale:
A. Chronic stable angina is incorrect because PCI may be considered for symptom relief in stable angina, but it is not the primary or emergent indication. Stable angina is usually managed first with lifestyle changes, medications (such as nitrates, beta-blockers, and calcium channel blockers), and risk factor modification.

B. Left main coronary artery disease is incorrect as a primary indication because significant left main disease often requires coronary artery bypass grafting (CABG) rather than PCI due to high risk of major adverse cardiac events. PCI may be used in select cases, but it is not the standard primary indication.

C. Unstable angina is partially correct because PCI can be performed in patients with unstable angina who have high-risk features; however, it is still not the primary emergent indication. Management may involve medications and risk stratification before intervention.

D. Acute myocardial infarction (MI) is correct because PCI is the first-line, time-sensitive intervention for patients experiencing an acute MI, especially STEMI (ST-elevation myocardial infarction). PCI restores blood flow to the occluded coronary artery, limits myocardial damage, reduces complications, and improves survival. Timely PCI is often referred to as “door-to-balloon” treatment and is the standard of care in acute coronary syndromes.