One way to detect cardiovascular disease is by which test?

• A. MRI scan
• B. Ultrasound
• C. CT angiography
• D. ECG

Answer: (D)

The ECG records the heart’s electrical activity, making it a quick and effective way to detect cardiovascular disease. It can reveal abnormal heart rhythms, evidence of ischemia (such as ST-segment changes), and signs of prior heart damage through patterns like Q waves. Its strengths are speed, noninvasiveness, wide availability, and low cost, which is why it’s routinely used first in patients with chest pain or other symptoms suggestive of heart problems.

Imaging tests like MRI, ultrasound (echocardiography), and CT angiography provide detailed pictures of heart structure, function, or blood vessels, and they’re essential for further assessment. But for initial detection and rapid assessment of many cardiovascular conditions, the ECG is the most practical and informative option.