Can acute pulmonary embolism be cured by anticoagulation?

Written by Yuan Qing

Pulmonology

Updated on March 10, 2025

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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.

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Written by Yuan Qing

Pulmonology

56sec

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Can a secondary recurrence of pulmonary embolism be treated?

Pulmonary embolism, even if it recurs for the second time, is treatable, but the approach should differ from the first recurrence. It's vital to determine the cause of the pulmonary embolism, although many patients with this condition do not have an identifiable cause. For such patients, long-term oral anticoagulants might be recommended. With long-term use of oral anticoagulants, the likelihood of thrombosis, especially in the venous system, significantly reduces. This means that the chance of recurrence in patients also decreases considerably. However, if the cause can be identified, it is better to address and eliminate it. For instance, if the cause is long-term use of oral contraceptives or the presence of varicose veins, these primary or secondary factors should be resolved. The treatment should not just focus on anticoagulation or thrombolytic therapy, as there could still be a possibility of a future pulmonary embolism recurrence.

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Written by Li Qiang

Intensive Care Unit

49sec

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Why does pulmonary embolism cause cardiac arrest?

The mechanisms causing cardiac arrest due to acute pulmonary embolism mainly encompass several aspects. One is a large-scale acute extensive pulmonary embolism, which prevents the blood from being ejected from the right heart, potentially leading to acute right heart failure. At this time, the entire body's blood circulation will encounter issues. Another scenario is that following the pulmonary embolism, it causes severe hypoxia. This hypoxia can lead to oxygen deficiency in all organs of the body, including the heart. The coronary arteries that supply nutrients to the heart can also become ischemic. Both of these factors can cause the heartbeat to lead to sudden cardiac arrest. These are the primary mechanisms that can cause a sudden stop in the heartbeat.

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Written by Chen Tian Hua

Cardiology

53sec

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What are the early symptoms of pulmonary embolism?

The early symptoms of pulmonary embolism are clinically diverse and often non-specific. Mild cases may not present any symptoms at all. Common symptoms include the following: 1. Unexplained difficulty in breathing; 2. Pain in the precordial region; 3. Some patients initially present with fainting as the first clinical symptom; 4. Some patients may also experience irritability, fear, or a near-death feeling; 5. Early symptoms can also include coughing, coughing up blood, and palpitations. Pulmonary embolism is a critical condition in clinical settings. Once it occurs, it is essential to go to the hospital promptly for an accurate diagnosis and to receive effective treatment to avoid severe clinical consequences.

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Written by Wang Li Bing

Intensive Care Medicine Department

51sec

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Pulmonary embolism should be treated in the department of respiratory medicine.

Pulmonary embolism is an emergency in clinical settings, with rapid progression and extreme danger, and is generally treated by the department of respiratory medicine. Pulmonary embolism primarily occurs due to dislodged blood clots that block the pulmonary artery and its branches, leading to pulmonary infarction. The clinical manifestations of pulmonary embolism mainly include severe breathing difficulties, chest pain, coughing up blood, and even circulatory disturbances. After a pulmonary embolism occurs, a pulmonary artery CT scan can be used to further confirm the diagnosis. Treatment options may include thrombolysis, and possibly anticoagulation therapy with low molecular weight heparin or warfarin. (Specific medications should be used under the guidance of a physician.)

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Written by Li Jian Wu

Pulmonology

39sec

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Early symptoms of pulmonary embolism

In the early stages of pulmonary embolism, symptoms such as difficulty breathing, chest tightness, shortness of breath, and decreased oxygen saturation can occur. Early signs may include chest pain, as chest pain is often an initial symptom of pulmonary embolism. Sometimes the pain can be severe, and some patients may experience coughing, dry cough, and even cough up blood. There may also be symptoms of short exhalation and difficulty breathing, especially in patients with main trunk blockages, where the difficulty in breathing can be very pronounced. In more severe cases, some may experience fainting, suddenly collapsing while walking.