Other tests, studies and clinical observations are necessary to establish a precise diagnosis. Patient time for test 1-3 hours. Before the test Purpose of test Diagnoses abnormal heart rhythms and heart-conduction abnormalities. Determines the need for a pacemaker. Locates the site of a bundle-branch block, especially in people with no symptoms of conduction disturbances.
Helps evaluate usefulness of medication to treat heartbeat irregularities.
Hospital, outpatient or freestanding surgical facility. Lab technician, nurse, doctor. This test is hazardous if you have severe bleeding disorders, recent thrombophlebitis or acute pulmonary embolism. Emergency medication is on hand in case complications develop during the procedure. No changes necessary.