After the test The tube is withdrawn from the throat. It takes an hour or longer for the anesthetic to wear off and the gag reflex to return to normal. Do not try to eat or drink until the gag reflex is tested, which can be done by touching the back of the throat with a tongue depressor. If a sedative was given, you may be drowsy and should not drive for at least ten to 12 hours. Abstain from alcohol for a day or so before and after the test, because it increases the sedative effect.
Factors affecting results Very few factors affect results.
In fact, this test overcomes most of the problems that may be encountered during ordinary echocardiography because the transducer is placed immediately next to the heart. The images and video are analyzed by a doctor trained in interpreting echocardiograms. Advantages It provides views of the heart that cannot be obtained with conventional echocardiography. The next step More invasive tests, such as cardiac catheterization, may be ordered if images indicate cardiac abnormalities. Published under license from Houghton Mifflin Company.