In pregnancy-associated chest pain, which imaging approach best minimizes radiation exposure?

• A. Echocardiography or other pregnancy-safe imaging
• B. CT angiography
• C. Nuclear imaging
• D. Standard chest X-ray

Answer: (A)

In pregnancy-associated chest pain, the priority is to minimize fetal radiation exposure, so start with non-ionizing imaging. Echocardiography uses ultrasound to evaluate cardiac structure and function without any ionizing radiation, making it the safest and most practical first step. It can assess ventricular function, valvular disease, pericardial effusion, and regional wall motion, providing essential information to guide management while keeping the fetus protected.

Other imaging options rely on ionizing radiation or expose the patient to radiation despite being commonly used in other contexts. CT angiography delivers a higher fetal radiation dose and requires contrast, while nuclear imaging involves radiotracers with radiation. A standard chest X-ray, though relatively low in radiation compared to CT or nuclear studies, still involves ionizing radiation and is not as risk-free as ultrasound.

Thus, echocardiography or other pregnancy-safe imaging best minimizes radiation exposure while offering critical diagnostic information. If echo findings are inconclusive or clinical suspicion remains high for other conditions, further imaging can be considered with careful risk-benefit assessment.