Bundle Branch Block

Below you will find more information about Bundle Branch Block from Medigest. If you believe that you are suffering from any of the symptoms of Bundle Branch Block it is important that you obtain an accurate diagnosis from a medical professional to ensure that you obtain the correct medication or treatment for your condition. There are medical conditions that carry similar symptoms associated with Bundle Branch Block and therefore the information provided by Medigest is offered as a guideline only and should never be used in preference to seeking professional medical advice. The information relating to Bundle Branch Block comes from a third party source and Medigest will not be held liable for any inaccuracies relating to the information shown.


Bundle branch block pertains to an obstruction or delay in the electrical impulse pathway that causes the heart to beat.


To diagnose bundle branch block, an electrocardiogram or an ECG may be done. This is a noninvasive procedure which records the heart's activity. Abnormalities in the wave patterns of electrical impulses usually indicate bundle branch block.


There is no direct treatment for bundle branch block. However, treatment is necessary to deal with any underlying health conditions that caused the blockage in the first place, such as a coronary heart disease. Most medications associated with bundle branch block are drugs used to manage blood pressure or reduce the complications of heart failure. In some cases, an artificial pacemaker may need to be implanted.

Symptoms and Signs

Most cases of bundle branch block are asymptomatic. If it does become symptomatic, it commonly presents with fainting or syncope, dizziness, presyncope or near-fainting, and slower heart rate or brachycardia.


Bundle branch block may result from an injury or damage to the heart muscle, blockage of the heart's blood vessels, or from blockage of the heart impulses that make the heart beat. Even short interference that lasts for only a fraction of a second can cause bundle branch block. In some cases, bundle branch block is a congenital condition. In other cases, the blockage is caused by a number of factors, including: myocardial infarction; thickened or weakened heart muscle; hypertension; and scarring of tissues following a heart surgery.

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