If bradycardia accompanied by irregular heartbeats occurs, whether it is serious and the severity depends on the cause of the bradycardia and the frequency of the irregularity. A slow heart rate can lead to severe insufficient blood supply to the heart and brain, causing some ischemic heart and brain diseases. Therefore, patients with bradycardia and irregular heartbeats should go to the hospital and undergo related examinations under the guidance of a doctor. If it is caused by a primary disease, it is necessary to treat the primary disease and use medications to increase the heart rate and correct the irregular heartbeat to avoid causing greater harm to the body.