His bundle electrography

The bundle of His is a group of fibers that carry electrical impulses through the center of the heart. If these signals are blocked, you will have problems with your heartbeat. The His bundle electrography is part of an electrophysiology study (EPS). An intravenous catheter (IV line) is inserted into your arm so that…

You will be told not to eat or drink anything for 6 to 8 hours before the test. The test will be done in a hospital. Some people may need to check into the hospital the night before the test. Otherwise, you will check in the morning of the test. Although the test may take some time, most people do not need to stay in…

You are awake during the test. You may feel some discomfort when the IV is placed into your arm, and some pressure at the site when the catheter is inserted.

This test may be done to: Determine if you need a pacemaker or other treatment Diagnose arrhythmias Find the specific location where electrical signals through the heart are blocked

The time it takes for the electrical signals to travel through the bundle of His is normal.

A pacemaker may be needed if the test results are abnormal.

Risks of the procedure include: Arrhythmias Cardiac tamponade Embolism from blood clots at the tip of the catheter Heart attack Hemorrhage Infection Injury to the vein or artery Low blood pressure Stroke

Curtis AB, Tomaselli GF. Approach to the patient with cardiac arrhythmias. In: Libby P, Bonow RO, Mann DL, Tomaselli GF, Bhatt DL, Solomon SD, eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine . 12th ed. Philadelphia, PA: Elsevier; 2022:chap 61. Issa ZF, Miller JM, Zipes DP. Atrioventricular…