If a reaction occurs, it typically happens right away, while you are still in the test room. Some people get backaches, headaches or rashes. There may be a small risk of a reaction to the contrast dye. The firmness is needed to create the best pictures of the heart. If you have a standard transthoracic echocardiogram, you may feel some discomfort when the ultrasound wand pushes against your chest. Other risks of an echocardiogram depend on the type of test being done. The sound waves pose no known risk to the body. Pulmonary atresia with ventricular septal defectĮchocardiography uses harmless sound waves, called ultrasound.Pulmonary atresia with intact ventricular septum. ![]()
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