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Definition:
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His bundle electrography is a test that measures electrical activity in a part of the heart that carries the signals that control the time between heartbeats (contractions).
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Alternative Names:
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His bundle electrogram; HBE; His bundle recording; Electrogram - His bundle
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How to prepare for the test:
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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 patients may need to check into the hospital the night before the test. Otherwise, you check in the morning of the test.
Your health care provider will explain the procedure and its risks. You must sign a consent form before the test starts.
About half an hour before the procedure, you will be given a mild sedative to help you relax. You will wear a hospital gown. The procedure may last from 1 to several hours.
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How the test will feel:
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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.
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Why the test is performed:
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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
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Normal Values:
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The time between electrical signals from the bundle of His are evenly spaced.
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What abnormal results mean:
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A pacemaker will be needed if the test results are abnormal.
Abnormal results may mean you have or had:
- Chronic conduction system disease
- Carotid sinus pressure
- Recent heart attack
- Atrial disease
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What the risks are:
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Risks of the procedure include:
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References:
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Miller JM. Diagnosis of cardiac arrhythmias. In: Zipes DP, Libby P, Bonow RO, Braunwald E, eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 8th ed. St. Louis, Mo: WB Saunders; 2007:chap 32.
Rakel RE. Textbook of Family Practice. 6th ed. Philadelphia, Pa: WB Saunders; 2005:733.
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