Pulmonary embolism

A blood clot entering a pulmonary artery can cause sudden shortness of breath, chest pain, and a life-threatening condition.

Pulmonary embolism usually occurs when a clot that formed in the leg veins breaks off and travels to the pulmonary arteries. Small emboli may cause mild symptoms, whereas large emboli can be life-threatening.

When to seek emergency care

If any of the following signs occur, call *3003 immediately — do not wait for a routine appointment:

  • Sudden severe shortness of breath
  • Chest pain
  • Coughing up blood
  • Loss of consciousness
  • Low blood pressure and bluish discoloration

What is it?

Treatment is selected according to the size of the embolus, its effect on blood pressure, oxygen levels, and bleeding risk.

Symptoms

  • Shortness of breath
  • Chest pain that worsens with deep breathing
  • Rapid pulse
  • Cough
  • Leg swelling and pain
  • Weakness

Causes & risk factors

  • Deep vein thrombosis
  • Prolonged immobility
  • Postoperative period
  • Cancer
  • Pregnancy and the postpartum period
  • Hormonal medications

Diagnosis

Diagnosis is not based on a single test alone. Symptoms, risk factors, physical examination, and instrumental findings are assessed together.

  • CT pulmonary angiography
  • D-dimer in selected cases
  • Doppler ultrasound of the leg veins
  • ECG and echocardiography
  • Blood oxygen and laboratory measurements

Treatment approaches

Treatment is individualized according to disease severity, the patient’s overall condition, comorbidities, and procedural risk.

  • Anticoagulant therapy
  • Oxygen and critical care support
  • Thrombolysis in selected severe cases
  • Catheter-directed treatment in selected cases
  • DVT prevention

How we help

At the center, a patient’s hemodynamic status is assessed immediately when pulmonary embolism is suspected. In severe cases, the critical care, cardiology, and interventional radiology teams make a joint decision.

When a procedure may be needed

Catheter-directed treatment or a thrombolytic approach may be considered when there is low blood pressure, right heart strain, a large clot burden, or high-risk embolism.

Patient checklist

  • Call emergency services for sudden shortness of breath
  • Report any recent surgery or long journey
  • Mention any leg swelling
  • Tell the physician about bleeding risks

FAQ

Can pulmonary embolism be fatal?

Yes, especially when it obstructs large vessels. Therefore, medical care should not be delayed for sudden shortness of breath.

How long are medications taken after treatment?

The physician determines the duration based on the cause of the embolism and the risk of recurrence.

Last updated:

Related department

Invasive Radiology

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