Pulmonary embolism

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Written by Wang Li Bing
Intensive Care Medicine Department
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What are the precursors of pulmonary embolism?

Pulmonary embolism is also relatively common in clinical practice. Its precursors may include varying degrees of respiratory difficulty, chest tightness, and shortness of breath, among others. If such symptoms occur, medical attention should be sought promptly, primarily to rule out the possibility of acute myocardial infarction. Pulmonary artery CTA can further confirm whether there is a pulmonary embolism. In cases of extensive pulmonary embolism, there is a high risk of sudden death, and aggressive thrombolytic and anticoagulation treatments should be administered. If the patient's chest tightness and shortness of breath are relieved after the aforementioned treatments, hospitalization for observation and treatment is still necessary.

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Written by Wang Li Bing
Intensive Care Medicine Department
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Pulmonary embolism belongs to which department?

Pulmonary embolism mainly refers to the detachment of thrombi in the blood, leading to the obstruction of the main trunk of the pulmonary artery and its branches, causing a series of syndromes. Pulmonary embolism is an emergency in clinical practice. If the patient's circulation becomes unstable after the embolism, thrombolytic therapy should be considered. If the patient's respiratory circulation remains stable after the embolism, anticoagulation therapy can be considered. In clinical practice, pulmonary embolism is primarily diagnosed through pulmonary artery CTA examination to further clarify the diagnosis, and patients generally consult the respiratory medicine department.

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Written by Wei Shi Liang
Intensive Care Unit
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How long does the treatment for pulmonary embolism take?

The timing of pulmonary embolism treatment mainly depends on the severity of the pulmonary embolism. The main goals of pulmonary embolism treatment are to save lives by addressing life-threatening right heart dysfunction and obstructive shock caused by the pulmonary embolism, to re-establish pulmonary vascular patency, restore lung tissue perfusion, and prevent the recurrence of pulmonary embolism. Main treatment methods include: respiratory and circulatory support, anticoagulation, thrombolysis, interventional or surgical removal of blood clots, placement of inferior vena cava filters, etc. General management: Patients who are highly suspected or diagnosed with pulmonary embolism should be closely monitored, tracking changes in respiration, heart rate, blood pressure, venous pressure, electrocardiogram, and blood gases to prevent the dislodgement of clots again. Absolute bed rest is required, and care should be taken not to overly bend the lower limbs, maintain bowel regularity, and avoid straining. For patients experiencing anxiety and panic symptoms, reassurance should be provided, along with appropriate use of sedatives. If there is chest pain, analgesics may be administered. For symptoms like fever and cough, corresponding symptomatic treatments should be given. To prevent lung infections and treat phlebitis, antibiotics may be used. Additionally, support treatments for respiratory and circulatory functions, as well as anticoagulation therapy, should be provided.

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Written by Wei Shi Liang
Intensive Care Unit
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Can pulmonary embolism lead to pneumonia?

Pulmonary embolism itself does not cause pneumonia; however, during the treatment of pulmonary embolism, procedures such as oral tracheal intubation and the creation of an artificial airway might be employed. These can lead to nosocomial infections of iatrogenic origin, resulting in pneumonia. Pulmonary embolism often manifests as unexplained respiratory difficulty, pleuritic pain, tachycardia, and decreased oxygen saturation. Other high-risk factors include being over the age of 40, having a history of DVT (Deep Vein Thrombosis), obesity, prolonged immobilization, stroke, congestive heart failure, malignancy, lower limb fracture, anesthesia time exceeding 30 minutes during surgery, pregnancy and childbirth, use of estrogen, and a hypercoagulable state. These are all potential high-risk factors for pulmonary embolism.

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Written by Wei Shi Liang
Intensive Care Unit
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Pulmonary Embolism Interventional Treatment Methods

Interventional treatment for pulmonary embolism is mainly used for large pulmonary embolisms in the main trunk or major branches of the pulmonary artery. It is applicable in the following scenarios: contraindications to thrombolysis and anticoagulation therapy, inefficacy after thrombolysis or aggressive medical treatment, or lack of surgical conditions. Interventional therapy for pulmonary embolism can involve removing the embolus or breaking it into fragments, allowing it to move to the distal pulmonary arteries, thereby opening the central pulmonary arteries, rapidly reducing pulmonary artery resistance, significantly increasing total pulmonary blood flow, improving cardiopulmonary hemodynamics, and right ventricular function. The treatment involves catheter fragmentation and suction of large clots in the pulmonary artery or performing balloon angioplasty, and it also enables local administration of small-dose thrombolysis. These are the primary methods of interventional treatment for pulmonary embolism.

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Written by Wang Chun Mei
Pulmonology
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What should I do if I have pulmonary embolism and asthma?

Pulmonary embolism is a very common type of disease clinically, and its triggering factors are numerous and complex. For such patients, the main triggering factors are usually the detachment of thrombi from the pelvic deep veins and the lower limb deep veins, leading to pulmonary artery embolism. Therefore, the clinical symptoms that appear in these patients are mainly difficulty breathing, chest tightness, chest pain, and some patients may experience coughing, coughing up blood, shortness of breath, and even wheezing. Thus, for such patients, it is first necessary to clarify the cause of the disease, and then provide the patient with oxygen, thrombolysis, anticoagulation, and other symptomatic treatments. Usually, after effective symptomatic treatment, when the embolism location is effectively controlled, the symptoms of wheezing and air blockage that the patient experiences will also be significantly improved.

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Written by Wang Li Bing
Intensive Care Medicine Department
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Pulmonary embolism means

The formation of thrombotic foreign bodies in the human venous system or the right atrium and ventricle system, ultimately leading to the blockage in the pulmonary artery, is referred to as pulmonary embolism. After the onset of pulmonary embolism, patients may experience symptoms such as shortness of breath, chest pain, coughing, and even coughing up blood. It is crucial to immediately conduct a pulmonary artery CTA scan for further diagnosis. If the diagnosis of pulmonary embolism is confirmed, thrombolytic or interventional treatments can be considered.

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Written by Wei Shi Liang
Intensive Care Unit
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Pulmonary embolism is caused by what?

The most common cause of pulmonary embolism is a thrombus, with approximately 70%-95% of cases occurring when a deep vein thrombosis dislodges and enters the pulmonary arteries and their branches via the bloodstream, leading to pulmonary embolism. Conditions such as prolonged bed rest or immobilization of the lower limbs can lead to the occurrence of deep vein thrombosis. Therefore, the primary site of origin is mainly the deep veins of the lower limbs. Additionally, other types of emboli can also cause pulmonary embolism, such as fat emboli, air emboli, amniotic fluid emboli, parasitic emboli, and bacterial emboli, as well as detachment of cardiac tumors; all these can lead to pulmonary embolism.

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Written by Wang Chun Mei
Pulmonology
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Is there a lot of phlegm in pulmonary embolism?

Pulmonary embolism is a relatively common acute disease in clinical practice. It usually occurs when blood clots from the veins in the legs or pelvis detach, travel through the bloodstream to the pulmonary arteries, and cause an embolism. The onset of this disease is often very sudden. Due to different triggers, the clinical symptoms vary. Typical symptoms of pulmonary embolism include difficulty breathing, chest pain, coughing up blood, and coughing. Coughs are often dry, and patients may also have a small amount of white sputum. Some patients might even experience wheezing and other clinical symptoms. Therefore, the occurrence of excessive sputum is rare in patients with pulmonary embolism.

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Written by Wei Shi Liang
Intensive Care Unit
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Is pulmonary embolism related to pneumonia?

If unexplained shortness of breath, pleuritic chest pain, tachycardia, and decreased oxygen saturation occur, one should be highly vigilant about pulmonary embolism. Generally, pulmonary embolism has no direct relationship with pneumonia. High-risk factors for pulmonary embolism include obesity, prolonged immobilization, stroke, congestive heart failure, malignant tumor, inflammatory bowel disease, lower limb fracture, anesthesia time exceeding 30 minutes, and acquired or genetic hypercoagulable state. It usually manifests as difficulty breathing, rapid breathing, and pleuritic chest pain.