For a symptomatic patient with low likelihood and no CAD history, which test is most appropriate as initial evaluation?

• A. LV dysfunction with suspected CAD
• B. Young patient with no CAD history and low likelihood
• C. High clinical likelihood needing revascularization
• D. Prior MI

Answer: (B)

Understanding the test choice hinges on pretest probability of disease. In someone who is young, has no history of CAD, and has a low likelihood of CAD despite symptoms, performing noninvasive ischemia testing is unlikely to add useful information and carries risks of false positives that could lead to unnecessary procedures. The preferred initial approach is to refrain from diagnostic testing and instead focus on risk-factor management, reassurance, and close follow-up. Testing can be reconsidered if symptoms persist, worsen, or if the patient’s pretest probability rises due to new information or events.