Anticoagulation has a partial curative effect on acute pulmonary embolism. Based on the area of the embolism and the patient's vital signs, it is classified into mild, moderate, and severe pulmonary embolism.

If it is a mild to moderate pulmonary embolism, anticoagulation can completely cure it, because anticoagulation can help the body's fibrinolytic system remove the blood clots that have already formed, and it can also prevent new clots from forming.

However, in cases of severe pulmonary embolism, especially when the patient presents unstable vital signs and is in life-threatening condition, it is not advisable to rely solely on anticoagulant therapy. This is because the effect of anticoagulant treatment is relatively slow, and it requires a certain amount of time for the body's immune and fibrinolytic systems to clear the embolism. Therefore, at such times, thrombolytic treatment is recommended. Of course, this requires an experienced physician to assess the patient's vital signs and overall condition.