The law of blood pressure changes in winter The big temperature difference between day and night in winter, the temperature is low, the human body is stimulated by cold, will lead to sympathetic excitation, the whole body capillary constriction leads to increased vascular resistance, resulting in different degrees of blood pressure rise, especially in the early morning and night when the temperature is relatively low. The rise is more pronounced in patients with hypertension or the elderly. Cerebral vasoconstriction will cause ischemia and hypoxia in the brain, which accelerates the formation of blood clots. At the same time, the dry climate, the body consumes more water, which can easily cause dehydration in the body, high blood viscosity, slowed blood flow, and insufficient blood volume can lead to ischemic stroke or myocardial infarction and other serious and fatal diseases occur. In winter, how should patients adjust their antihypertensive drugs? 1, the appropriate increase: If the original monotherapy blood pressure control is good, and in winter can not control, the simplest way is to increase the amount of the original drug. Because the original drug has been taken for a long time, on the one hand, there is a certain efficacy, on the other hand, adverse drug reactions have been mastered, not to appear unexpected serious adverse reactions. But the general beta blocker dose should pay special attention to observe the heart rate, if the heart rate is already very slow, it is not appropriate to increase the dose. 2, combination therapy: if an antihypertensive drug has reached the maximum dose, another antihypertensive drug should be added in small doses. Because if you continue to increase the original drug beyond the maximum dose, it may lead to serious adverse reactions. Preferred combinations include: diuretics + ACEI/ARB; calcium channel blockers + β-blockers/ACEI/ARB; and the next best combination: β-blockers plus calcium channel blockers. The combination of ACEI plus ARB is generally not advocated at present, but of course, there is no need to switch to other combinations when ACEI plus ARB has been used in the past without significant adverse effects. If the blood pressure does not reach the standard even after the maximum dose of the combined drugs, a third drug can be added and the dose can be gradually increased until the blood pressure reaches the standard. In winter, hypertension patients taking antihypertensive drugs precautions? 1, comply with medical advice: doctors will adjust antihypertensive drugs according to the patient’s blood pressure level, target organ damage, other concomitant clinical manifestations and risk factors, so you must comply with medical advice, and not think you can adjust the type and dose of medication without permission. 2, to take antihypertensive drugs immediately after waking up in the early morning to reduce the degree and duration of blood pressure elevation in the early morning, thus reducing the chance of complications. You can put the antihypertensive medication at your bedside, and it is advisable to drink a glass of water and rest for a while before getting up in the morning. Winter hypertension patients should also pay attention to the self-preventive measures. 1, should pay attention to the stool should not squat for a long time force, so as not to increase intracranial pressure leads to cerebral hemorrhage, should be appropriate application of laxative food or drugs. 2, to minimize unnecessary going out. Patients with unstable blood pressure should not go out for morning exercises when the weather is cold. If you want to go out, you should pay attention to wearing warm clothing to prevent cold stimulation, such as wearing winter hats, scarves and gloves, wearing wide and warm shoes, and avoiding walking into the wind. Avoid using too hot and too cold water for bathing. 3, pay attention to adhere to the scientific lifestyle: regular life, work and rest, avoid excessive fatigue. 4, pay attention to control emotions, avoid mental stimulation, tension, especially not excessive anger or excessive excitement. 5, winter can generally go to bed early and get up late to ensure sufficient good sleep. Before going to bed, hot water can be used to bubble feet, etc.