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Complications
By Mayo Clinic staffThe complications of bundle branch block are similar whether the blockage is on the right or left side of your heart, but for people who have a left side bundle branch block, complications are often more common. Complications include:
- Slow heart rate
- Heart arrhythmia
- Cardiac arrest or sudden cardiac death
People who have heart attacks and develop bundle branch block have a higher chance of complications and death than do people with a heart attack who don't have bundle branch block.
In addition, because bundle branch block affects the electrical activity of your heart, it can sometimes complicate the accurate diagnosis of other heart conditions, especially heart attacks, and lead to delays in proper management of those problems.
