Normal blood pressure standard high pressure is greater than or equal to 90mmHg, less than 140mmHg, low pressure is greater than or equal to 60mmHg, less than 90mmHg, below this blood pressure range, in medical terms, is called shock. Patients in shock will manifest as little urine, wet and cold extremities, and even coma. Patients in shock are life-threatening, and the causes of shock are probably cardiogenic shock, hemorrhagic shock, hypovolemic shock, and infectious shock. If a patient is in shock, he or she should immediately call 120 to the hospital for resuscitation treatment, otherwise the patient’s life will be in danger.