1, the patient suddenly palpitations shortness of breath, sitting whistle state, lips cyanosis, limb activity failure, with pinched pink foamy sputum, to consider acute left heart failure, should be instructed to the patient’s legs down, take a seated position, such as the availability of oxygen bags, inhalation of oxygen in a timely manner, and quickly notify the emergency center. 2.Sudden increase in blood pressure, accompanied by nausea, vomiting, severe headache, panic, frequent urination, and even blurred vision, that is, hypertensive encephalopathy has occurred. Family members should comfort the patient not to be nervous, bed rest, and take antihypertensive drugs in a timely manner, but also another diuretics, sedatives and so on. 3, the patient after exertion or excitement, angina pectoris, or even myocardial infarction or acute heart failure, pain in the anterior region of the heart, chest tightness, and extends to the neck, the back of the left shoulder or the upper limbs, pale, cold sweat, at this time should be told to rest quietly, take a piece of nitroglycerin or a amyl nitrite, and inhalation of oxygen. 4, hypertensive patients onset, will be accompanied by cerebrovascular accidents, in addition to headache, vomiting, and even impaired consciousness or limb paralysis, at this time to let the patient lying down, head to the side, so as to avoid impaired consciousness, or violent vomiting vomit inhalation of airway, and then notify the emergency center.