The patient had shortness of breath and pain radiating down his left arm.An EKG showed abnormalities.To further define the etiology of the patient's symptoms,the cardiologist passed a catheter into his heart from a vessel in the groin to examine the condition of the heart,or

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Cardiac catheterization is the most appropriate choice to further define the etiology of the patient's symptoms, as it can visualize any blockages or other abnormalities in the heart's blood vessels and chambers. The other options (transesophageal echocardiogram, exercise stress test, and sestamibi test) may provide useful information in certain situations, but they are not as comprehensive as cardiac catheterization in evaluating the condition of the heart.

The Patient Had Shortness of Breath and Pain Radiating Down