Atrial fibrillation occurs in significantly more patients in winter, and this arrhythmia is fatal, so it should be taken seriously. According to statistics, the incidence of atrial fibrillation increases sharply with age, and atrial fibrillation is very common in the elderly, with an incidence of atrial fibrillation of up to 5% in people over 65 years of age and up to 10% in people over 75 years of age, and one third of strokes in elderly patients are caused by atrial fibrillation. Atrial fibrillation, short for atrial fibrillation, is one of the most common cardiac arrhythmias caused by abnormal activity of the atrial muscle. Atrial fibrillation is not only common but also serious, and can seriously affect the quality of life of patients, while greatly increasing the mortality rate and the incidence of strokes. The normal human heart beats 60-100 times per minute, but when atrial fibrillation occurs, the atria become excited 350-600 times per minute, and this excitation is so irregular that the atria cannot contract effectively. Patients may have panic, dizziness, fatigue, and in severe cases, shortness of breath, especially when going upstairs and other activities, and in a few cases, transient blackness in front of the eyes. Very few patients with atrial fibrillation can have no discomfort and are detected only on physical examination and during an electrocardiogram. Atrial fibrillation causes a twofold increase in mortality Because the atria lose their contraction function during atrial fibrillation, blood is easily stagnated in the atria and forms blood clots, which can be shed with the blood to all parts of the body, leading to cerebral embolism and arterial embolism of the limbs. Fast heart rate and irregular rhythm can make patients feel palpitations, and the loss of atrial systolic function and long-term increase in heart rate can lead to heart failure and increase mortality (twice as much as normal people). The causes of atrial fibrillation are, in order of prevalence, rheumatic heart disease, coronary heart disease, hypertension, hyperthyroidism, and others include cardiomyopathy, myocarditis, and pre-excitation syndrome, and may also be related to alcohol consumption, stress, electrolyte or metabolic imbalances, and severe infections. About 30% of patients can be without any etiology, called idiopathic atrial fibrillation. To prevent atrial fibrillation in winter, one should quit smoking and drinking and avoid stress. Alcoholic beverages are often consumed in winter, and low temperatures and respiratory infections predispose atrial fibrillation to occur. What measures can be taken to prevent atrial fibrillation in winter? Adding clothing, keeping warm, getting a flu vaccination and limiting the intake of alcoholic beverages can reduce the risk of atrial fibrillation in high-risk groups. Patients with atrial fibrillation should stop smoking, limit alcohol consumption, and avoid caffeine-containing diets and medications (such as tea, coffee, cola, and some over-the-counter medications); be cautious with certain medications for cough or cold, as they may promote irregular heart rhythms, and ask your doctor or read the instructions before taking them to see if they are appropriate for you. Medication is the basis of atrial fibrillation treatment. The use of some medications such as digoxin and betalactam to control the ventricular rate in patients with atrial fibrillation, so that the ventricular rate is maintained at the ideal standard of 60 to 70 beats per minute, can make the patient’s breath-holding and panic symptoms disappear. Taking anticoagulants such as warfarin or aspirin can prevent the formation of blood clots in the left heart ear and prevent the occurrence of risks such as strokes.