The sweltering summer heat may cause a sharp rise in blood pressure in patients with hypertension. When you suddenly walk into a cooled room from a hot outdoor area, your blood pressure may also rise sharply due to the temperature difference, and may also cause cardiovascular and cerebrovascular emergencies. When the weather is hot, hypertensive patients should pay attention to the following issues: 1. Avoid excessive sweating. Avoid too much exercise, doing too much exercise, or household chores, etc. Because a lot of sweating and excessive breathing can make the body lose too much water, it is easy to cause cerebrovascular emergencies. 2.Frequent hydration. Pay attention to replenish water, even when you feel not too hot, you should always drink water. At night, you should put a glass of water next to the bed, and drink a moderate amount of water when you wake up half awake. Because a study has proved that hypertensive patients are prone to strokes and heart attacks in the early morning, which is related to the lack of water at night. 3, adhere to the diet treatment. The heat often makes people lose their appetite, so hypertension patients should pay extra attention to dietary adjustments in the summer, pay attention to nutrition, and eat more vegetables and fruits. 4, adjust the antihypertensive drugs. Studies have found that some hypertensive patients have low blood pressure in the summer, so in the summer hypertensive patients should be under the guidance of doctors, adjust the dosage of antihypertensive drugs to avoid accidents due to low blood pressure. 5.Ensure normal sleep. The summer heat makes it difficult to sleep, or leads to a decrease in sleep quality, and hypertensive patients may experience elevated blood pressure at night, so hypertensive patients must take measures to prevent heat. Ensure adequate sleep.