Individuals with right bundle branch block usually have no significant discomfort, or may experience symptoms associated with the primary condition, such as chest pain, weakness, and panic attacks. Right bundle branch block refers to the slowing or interruption of electrical conduction along the right bundle branch in the heart, and is the most common form of intracardiac block. Patients with right bundle branch block alone usually have no symptoms, and if there is a primary heart condition, it often manifests as symptoms of the primary condition. Atrial septal defects in congenital heart disease may be combined with right bundle branch block, and patients often present with symptoms such as weakness, shortness of breath, and panic attacks. Coronary artery disease, hypertensive heart disease, and dilated cardiomyopathy may be associated with right bundle branch block, which is characterized by chest tightness and chest pain, panic attacks, blackouts, and even fainting. Heart disease caused by pulmonary arterial hypertension and chronic obstructive pulmonary disease (COPD) can lead to right bundle branch block, which is characterized by dyspnea, syncope, palpitations, decreased endurance, and even fainting. Patients with right bundle branch block usually need to be treated for the primary disease, but if there is no other heart disease, just simple right bundle branch block, no special treatment is needed.