Every year, more patients are seen for poor sleep in the spring than in any other season. Patients with cardiovascular disease may experience whistling disorders, myocardial ischemia, arrhythmias, and even death during sleep. Let’s learn more about this below. 1, heart attack: During the transition from sleep to wakefulness, the stability of cardiac electricity suddenly breaks down, making the incidence of arrhythmia significantly higher. 2, coronary heart disease: For patients with coronary heart disease, increased coronary return in the horizontal position can increase the left ventricular end-diastolic pressure and volume, and these may increase the incidence of cardiovascular disease emergencies. 3, arrhythmias: Fear of patency occurring in dreams accompanied by tachycardia, rapid whistling, sweating, sudden rise in blood pressure and other manifestations of autonomic dysfunction. 4, circadian fluctuations in hypertension: Some studies have concluded that hypertensive patients whose blood pressure circadian rhythm disappears may be more prone to stroke. 5. Heart failure: Patients with heart failure have highly disturbed sleep, are easily awakened, and have increased changes in sleep stages. During sleep, their whistling is significantly inhibited, leading to impaired cardiac function due to inadequate blood supply to the whistling center. Increased sympathetic activity in heart failure patients is highly correlated with increased mortality. 6, lack of sleep: may induce cardiovascular disease, so it is important for each patient to pay attention to their condition during sleep in the spring. Monitoring of sleep to fully understand the state of nocturnal autonomic activity in cardiovascular patients can help with early prevention, diagnosis and treatment of the disease and reduce the rate of sudden death. For patients with cardiovascular disease, prevention in the spring is critical. In daily life to develop good sleep habits, spring more on time to get up, early to bed and early to rise, moderate exercise, go to the countryside to breathe more fresh air, these are very good for the disease to help. At the same time to do a good job of self-care and prevention of the disease, regular review.