For patients with cardiovascular disease, high temperatures are very frightening, and many cardiovascular diseases occur during the hot season. Lack of rest and lack of sleep is also one of the triggers of arrhythmia recurrence. In summer, the body will expand the blood vessels on the surface of the body to dissipate heat, and blood will gather on the surface of the body, and the blood supply to the heart and brain will be relatively reduced. At the same time, summer sweating, blood is relatively sticky, which will aggravate the cardiac ischemia and hypoxia response of arrhythmia patients, and it is easy to develop arrhythmia. In addition, when you can’t control your emotions and get excited, your sympathetic nerves will be overexcited, resulting in faster heartbeat, shorter diastolic period and faster intraventricular conduction, which will also make it easier for various types of arrhythmias to occur. In addition, the long day and short night in summer, the sleep time at night is reduced, coupled with the hot weather, the quality of sleep will be greatly reduced, lack of rest, lack of sleep is also one of the triggers of arrhythmia recurrence. What kind of people are prone to arrhythmias? 1, athletes, administrators and other people who are under long-term overload; 2, people who lack activity; 3, people who are often under mental stress; 4, people with cardiovascular risk factors such as hypertension, hyperlipidemia, obesity and diabetes; 5, people with all heart diseases. Magnetic Resonance Compatible Cardiac Pacing Technology: The atrial and ventricular electrode leads of Magnetic Resonance Compatible Cardiac Pacing Technology are active fixed electrodes, and patients implanted with this pacemaker can be examined with various magnetic medical devices in the future. Pacemaker lead removal: Patients who have had a pacemaker implanted with a broken or fractured electrode, whose insulation is not functioning, or who have had a postoperative infection should have their pacemaker removed as soon as possible.