Final answer:
The described symptoms suggest Prinzmetal's angina, a condition that can cause chest pain and transient STE in young patients without significant CAD risk factors. Diagnostic test would likely include a coronary angiography with a spasm provocation test, while treatment usually involves calcium channel blockers or nitrates.
Step-by-step explanation:
The student's question pertains to a young, healthy patient with chest pain (CP) that occurs at rest, worsens at night, has few coronary artery disease (CAD) risk factors, a history of migraine headaches (hinting the patient might be female), and shows transient ST-segment elevation (STE) during episodes. The patient appears to exhibit symptoms that are not typical of classic CAD given their age, gender, and risk profile. One potential diagnosis could be Prinzmetal's angina (also known as variant angina), which is characterized by transient STE and chest pain typically occurring at rest and may be associated with migraine headaches.
The diagnostic test that would likely be recommended is a coronary angiography during which a spasm provocation test might be performed. This test can help to confirm the diagnosis by demonstrating transient occlusion or spasm of the coronary arteries. As for treatment (Txt), calcium channel blockers or nitrates are commonly used to relieve coronary artery spasms in patients with Prinzmetal's angina.