Pulmonary embolism
What is pulmonary embolism?
Pulmonary embolism (PE) presents a substantial threat to life, characterised by the sudden blockage of one or more lung arteries by a blood clot originating elsewhere in the body, commonly from the deep veins of the legs, a medical condition known as deep vein thrombosis (DVT).
These clots impede blood flow to the lungs, resulting in severe complications like pulmonary infarction, right heart strain, or potentially fatal outcomes if not promptly identified and managed.
WHAT ARE THE SIGNS?
The signs and symptoms of pulmonary embolism can vary widely depending on the size and location of the blood clot and the individual's overall health. However, common signs and symptoms include:
- Sudden onset of shortness of breath, which may worsen with exertion
- Chest pain, which may worsen with deep breathing, coughing, or swallowing
- Rapid heartbeat (tachycardia)
- Coughing up blood (haemoptysis)
- Feeling lightheaded or dizzy
- Fainting
- Sweating
- Leg swelling or pain may indicate the presence of a deep vein thrombosis.
HOW DO YOU TREAT PULMONARY EMBOLISM?
Dr Muhammed Zaid Hoosen employs various diagnostic tools to accurately identify and evaluate pulmonary embolism in his patients. These may include:
- CT pulmonary angiography (CTPA): This diagnostic imaging procedure is regarded as the primary method for identifying pulmonary embolism. It entails the injection of contrast dye into a vein followed by the capture of detailed X-ray images of the lung's blood vessels to identify any obstructions.
- Ventilation-perfusion (V/Q) scan: In this nuclear medicine procedure, a radioactive substance is injected into a vein, and specialised cameras are then used to create images showing the distribution of air and blood flow in the lungs.
- D-dimer blood test: Increased levels of D-dimer, a protein fragment produced during the breakdown of a blood clot, might indicate the presence of a blood clot in the body.
- Ultrasound: Dr Hoosen may perform ultrasound imaging of the legs to look for evidence of deep vein thrombosis, which is a common underlying cause of pulmonary embolism.
HOW DO YOU TREAT PULMONARY HYPERTENSION?
Treatment for pulmonary embolism focuses on several objectives, including preventing further blood clot formation, dissolving existing clots, alleviating symptoms, and reducing the risk of complications. Treatment options include:
- Anticoagulant therapy: Commonly prescribed medications such as heparin and warfarin aim to prevent the formation of new blood clots and enhance the body's natural clot-dissolving mechanisms to break down existing clots.
- Thrombolytic therapy: In severe cases of pulmonary embolism associated with significant hemodynamic instability or organ damage risk, thrombolytic medications like tissue plasminogen activator (tPA) may be administered to rapidly dissolve blood clots.
- Inferior vena cava (IVC) filter: In exceptional cases where anticoagulant treatment is inappropriate or ineffective, inserting a small filter in the inferior vena cava (the large vein responsible for transporting blood from the lower body to the heart) may be suggested to trap blood clots and prevent their migration to the lungs.
- Supportive measures: Individuals with pulmonary embolism might need supplemental oxygen therapy to boost oxygen levels and alleviate breathlessness. Hospitalisation may be necessary in some cases for close observation and management of complications.