(The SANS Institute, Bethesda, MD, www.sans.org) A membership organization devoted to computer security founded in 1989.
A bundle branch block is a defect of the bundle branches or fascicles in the electrical conduction system of the heart. bundle branch block is a defect of the bundle branches or fascicles in the electrical conduction system of the heart.
Right bundle branch block comes from a problem with the heartâs ability to send electrical signals. It usually doesnât cause symptoms unless you have some other heart condition. Your heart has 4 chambers. The 2 upper chambers are called atria, and the 2 lower chambers are called ventricles.