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GRSUltra chest to check your heartbeat during the test.Shortly before the procedure, a nurse or technician can shave the hair from where the catheter is inserted. Before the catheter is inserted into your artery, you will be anesthetized to numb the area. You may feel a quick, stabbing pain before the numbnessIf you feel numb, the catheter is inserted. A small incision is usually made in your leg to access.
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