After a baseline electrocardiogram, which test is typically next to assess for inducible ischemia in a high-risk patient before noncardiac surgery?

After a baseline electrocardiogram, which test is typically next to assess for inducible ischemia in a high-risk patient before noncardiac surgery?

• A. Electrocardiogram
• B. Stress testing
• C. Coronary angiography
• D. Chest X-ray

Answer: (B)

Stress testing is used to assess inducible ischemia by raising the heart's demand and watching for a malignant perfusion mismatch or wall-motion abnormality. After a baseline ECG, this noninvasive test helps determine whether the myocardium develops ischemia under stress, which is crucial for risk stratification before major noncardiac surgery in high-risk patients. It can be done with exercise or, if the patient cannot exercise, pharmacologic stress with imaging (such as nuclear perfusion imaging or stress echocardiography). A resting ECG doesn’t reveal inducible ischemia, and a chest X-ray only shows anatomy and pulmonary status. Coronary angiography is invasive and reserved for cases with positive noninvasive testing or very high pretest probability. So the next step is stress testing to guide perioperative management.

Stress testing is used to assess inducible ischemia by raising the heart's demand and watching for a malignant perfusion mismatch or wall-motion abnormality. After a baseline ECG, this noninvasive test helps determine whether the myocardium develops ischemia under stress, which is crucial for risk stratification before major noncardiac surgery in high-risk patients. It can be done with exercise or, if the patient cannot exercise, pharmacologic stress with imaging (such as nuclear perfusion imaging or stress echocardiography). A resting ECG doesn’t reveal inducible ischemia, and a chest X-ray only shows anatomy and pulmonary status. Coronary angiography is invasive and reserved for cases with positive noninvasive testing or very high pretest probability. So the next step is stress testing to guide perioperative management.