Sinus arrhythmias Sinus arrhythmias are changes in the rhythm of the atria and ventricles caused by irregular excitation of the sinus node, mostly in young people, and usually do not require treatment. It can be reviewed periodically. Incomplete right bundle branch conduction block The beating of our heart is caused by the electrical signal from the sinus node, which travels along the atrioventricular junctional zone, the atrioventricular bundle, the left and right bundle branches, and the left and right ventricles, causing the atria and ventricles to contract one after another. It is only the right ventricle that is slightly delayed. Right bundle branch block is common in rheumatic heart, pulmonary origin heart, ventricular septal defect and coronary artery disease, and sometimes in normal subjects. Incomplete right bundle branch block can be seen in healthy individuals without evidence of heart disease, and complete right bundle branch block does not necessarily have extensive myocardial damage and is often not significant without other organic heart disease. If you have no organic heart disease on further medical examination, incomplete right bundle branch block is usually of no pathologic significance. Since there is no pathological significance, i.e., a normal healthy lifestyle will not have an effect on it. However, if there are other concomitant medical conditions, please visit a cardiologist. We recommend you to have regular review and consultation with a cardiology specialist. Complete right bundle branch conduction block Complete right bundle branch conduction block is an abnormal right bundle branch electrical conduction in the right ventricle with delayed conduction of bioelectrical signals to the right ventricle and delayed contraction of the right ventricle. Complete right bundle branch conduction block is often not significant if it is not associated with other organic heart disease. You are advised to follow up with the cardiovascular medicine department for consultation. Atrial fibrillation is one of the most common arrhythmias, an atrial rhythm of disordered excitation and ineffective contraction in the atria. In developed countries, coronary artery disease and myocardial disease predominate, while in developing countries rheumatic heart valve disease is the most common, and in the elderly it can be due to insidious hyperthyroidism or atrial septal defect. A small number of atrial fibrillations for which no clear cause can be found are called idiopathic atrial fibrillation. If AF has a high incidence and duration, it can also lead to serious complications such as heart failure and arterial embolism.