If there is a sudden drop in blood pressure, the patient should be monitored for heart rate, blood pressure, pulse rate, and oxygen saturation, and the patient should be closely monitored and given open intravenous access and fluid resuscitation with a rapid drip of saline. Another set of intravenous access should be established and necessary positive inotropic drugs, such as dopamine, should be given, which can have the effect of raising blood pressure. The cause of the sudden decrease in blood pressure should also be quickly sought, for example, if the patient has an acute myocardial infarction, the blood vessels should be quickly opened and blocked. If the patient is in infectious shock due to an infection that causes a sudden decrease in blood pressure, anti-infection therapy should be actively administered along with blood volume replacement.