Pulmonary Embolism

Patient Tools

Read, save, and share this guide

Use these quick tools to make this medical article easier to read, print, save, or share with a family member.

On this page7 sections

Article Summary

Pulmonary embolism (PE) occurs when a blood clot, known as a thrombus, forms in a vein (usually in the legs) and travels to the lungs, causing a blockage in the pulmonary arteries. This condition, often termed thromboembolic obstruction of pulmonary arteries, can be life-threatening if not promptly addressed. In this comprehensive guide, we will explore the types, causes, symptoms, diagnostic tests, treatments, drugs, and surgeries...

Key Takeaways

  • This article explains Causes of Pulmonary Embolism: in simple medical language.
  • This article explains Symptoms of Pulmonary Embolism: in simple medical language.
  • This article explains Diagnostic Tests for Pulmonary Embolism: in simple medical language.
  • This article explains Treatments for Pulmonary Embolism: in simple medical language.
Before reading

RX Patient Tools

Use these quick guides before reading the article, or return to them when you need help preparing questions for a doctor.

Start here Choose the right pathway for symptoms, reports, medicines, or urgent warning signs. Disease article roadmap Read this topic step by step: meaning, symptoms, warning signs, diagnosis, treatment, prevention, and follow-up. Treatment planner Prepare questions about treatment choices, benefits, risks, side effects, and follow-up. Family & caregiver guide Organize symptoms, reports, medicines, questions, and follow-up safely. Nutrition & diet guide Prepare food, hydration, supplement, and medicine-timing questions safely. Prevention guide Organize risk factors, protective habits, screening, and warning signs. Recovery guide Prepare a safe plan for activity, rehabilitation, warning signs, and follow-up.
Educational health guideWritten for patient understanding and clinical awareness.
Reviewed content workflowUse writer and reviewer profiles for stronger trust.
Emergency safety firstUrgent warning signs are highlighted below.
Choose your reading view

Patient View highlights a simple learning journey. Clinical View reveals structure, evidence, and editorial completeness.

Definition

() occurs when a blood clot, known as a thrombus, forms in a (usually in the legs) and travels to the lungs, causing a blockage in the pulmonary . This condition, often termed thromboembolic obstruction of pulmonary arteries, can be life-threatening if not promptly addressed. In this comprehensive guide, we will explore the types, causes, symptoms, diagnostic tests, treatments, drugs, and surgeries associated with pulmonary in simple and easy-to-understand language.

Types of Pulmonary Embolism:

  1. Massive Pulmonary Embolism: This occurs when a large clot or multiple clots block a major , significantly affecting blood flow to the lungs.
  2. Submassive Pulmonary Embolism: In this type, the clot partially obstructs a pulmonary , causing on the heart and affecting oxygen exchange.
  3. Non-Massive or Small Pulmonary Embolism: This involves smaller clots that may not cause symptoms but still require medical attention.

Causes of Pulmonary Embolism:

  1. (): The most common cause, DVT involves blood clots forming in the deep of the legs.
  2. Prolonged Immobility: Long periods of inactivity, such as during long flights or bed rest, can contribute to clot formation.
  3. Surgery: Postoperative periods pose an increased risk of clot formation.
  4. Smoking: Tobacco use can damage blood vessels and contribute to clot formation.
  5. Obesity: Excess body weight puts additional strain on the circulatory system.
  6. Factors: conditions can increase the likelihood of clot formation.
  7. Hormonal Factors: pills and hormone replacement therapy may elevate the risk.
  8. Cancer: Tumors can release substances that promote clot formation.
  9. Pregnancy: Changes in blood flow during pregnancy can contribute to clot formation.
  10. Certain Medical Conditions: Conditions like or inflammatory disorders can increase the risk.

Symptoms of Pulmonary Embolism:

  1. : Difficulty breathing, especially after exertion.
  2. : Sharp or stabbing in the chest that may worsen with deep breaths.
  3. Rapid Heart Rate: An elevated pulse, often accompanied by .
  4. : Coughing that may produce bloody or blood-streaked .
  5. Leg : Swelling, , or redness in the legs, indicating possible DVT.
  6. or : Feeling lightheaded or passing out, especially during physical activity.
  7. Excessive Sweating: Profuse sweating unrelated to physical exertion.
  8. Low Blood Pressure: , especially if the clot affects blood flow to a significant extent.
  9. : Elevated body temperature, though not always present.
  10. Irregular Heartbeat: Arrhythmias may occur due to strain on the heart.

Diagnostic Tests for Pulmonary Embolism:

  1. CT Pulmonary Angiography (CTPA): This imaging test provides detailed images of the pulmonary arteries.
  2. D-dimer Test: A blood test measuring the presence of a substance released when a blood clot breaks up.
  3. Ventilation/Perfusion (V/Q) Scan: A nuclear medicine test assessing air and blood flow in the lungs.
  4. Pulmonary Angiography: A specialized X-ray to visualize blood vessels in the lungs.
  5. Ultrasound: Used to detect blood clots in the legs or pelvic veins.
  6. Electrocardiogram (ECG or EKG): Measures the heart’s electrical activity to identify irregularities.
  7. Blood Gas Testing: Assesses oxygen and carbon dioxide levels in the blood.
  8. Chest X-ray: May reveal changes in the lungs and heart.
  9. MRI: Provides detailed images without radiation exposure.
  10. Echocardiogram: Uses sound waves to visualize the heart and assess its function.

Treatments for Pulmonary Embolism:

  1. Anticoagulant Medications: Blood thinners like heparin and warfarin prevent new clots from forming.
  2. Thrombolytic Therapy: Medications like alteplase dissolve existing clots.
  3. Vena Cava Filter: A device placed in the vena cava to catch clots before they reach the lungs.
  4. Oxygen Therapy: Supplemental oxygen to improve oxygen levels in the blood.
  5. Pulmonary Rehabilitation: Exercise and education programs to improve lung function.
  6. Supportive Care: Intravenous fluids and medications to stabilize blood pressure.
  7. Compression Stockings: Graduated compression stockings to prevent leg swelling and DVT.
  8. Embolectomy: Surgical removal of a clot in emergency situations.
  9. Catheter-Directed Thrombolysis: Targeted delivery of clot-dissolving medications through a catheter.
  10. Pulmonary Thrombectomy: Surgical removal of clots from the pulmonary arteries.

Common Drugs for Pulmonary Embolism:

  1. Heparin: An anticoagulant that prevents new clot formation.
  2. Warfarin: An oral anticoagulant often prescribed after initial heparin treatment.
  3. Rivaroxaban: A newer oral anticoagulant with a different mechanism of action.
  4. Apixaban: Another oral anticoagulant effective in preventing clot formation.
  5. Enoxaparin: A low-molecular-weight heparin often used in hospital settings.
  6. Alteplase: A thrombolytic medication that dissolves blood clots.
  7. Fondaparinux: A synthetic anticoagulant used to prevent DVT and PE.
  8. Dabigatran: An oral anticoagulant with a direct thrombin inhibiting action.
  9. Clopidogrel: An antiplatelet drug that inhibits blood clot formation.
  10. Aspirin: A common antiplatelet medication that reduces blood clotting.

Surgery for Pulmonary Embolism:

  1. Embolectomy: Surgical removal of a clot from the pulmonary arteries.
  2. Pulmonary Thrombectomy: Open-heart surgery to remove large clots.
  3. Catheter-Directed Thrombolysis: Minimally invasive procedure using catheters to deliver clot-dissolving medications.
  4. Vena Cava Filter Placement: Inserting a filter in the vena cava to prevent clots from reaching the lungs.
  5. Balloon Angioplasty: A procedure using a balloon to widen narrowed blood vessels.
  6. Thrombus Fragmentation: Breaking up clots using specialized devices.
  7. Pulmonary Artery Resection: Removal of part of the pulmonary artery affected by the clot.
  8. Lung Transplantation: Considered in severe cases when the lung is significantly damaged.
  9. Endarterectomy: Removal of the clot and inner layer of the pulmonary artery.
  10. Cardiopulmonary Bypass: Temporary support for heart and lung function during complex surgeries.

Conclusion:

Pulmonary embolism is a serious medical condition that requires prompt attention. Understanding its types, causes, symptoms, diagnostic tests, and treatment options is crucial for both patients and healthcare providers. If you suspect pulmonary embolism, seek medical help immediately. Early detection and appropriate intervention can significantly improve outcomes and prevent complications. Always consult with a healthcare professional for personalized advice and treatment.

 

Disclaimer: Each person’s journey is unique, treatment plan, life style, food habit, hormonal condition, immune system, chronic disease condition, previous medical  history is also unique. So always seek the best advice from a qualified medical professional or health care provider before trying any treatments to ensure to find out the best plan for you. This guide is for general information and educational purposes only. If you or someone are suffering from this disease condition bookmark this website or share with someone who might find it useful! Boost your knowledge and stay ahead in your health journey. Thank you for giving your valuable time to read the article.

  1. https://www.ncbi.nlm.nih.gov/books/NBK532297/
  2. https://www.ncbi.nlm.nih.gov/books/NBK549894/
  3. https://www.ncbi.nlm.nih.gov/books/NBK526002/
  4. https://www.ncbi.nlm.nih.gov/books/NBK538474/
  5. https://www.ncbi.nlm.nih.gov/books/NBK53086/
  6. https://www.ncbi.nlm.nih.gov/books/NBK470237/
  7. https://www.ncbi.nlm.nih.gov/books/NBK576402/
  8. https://www.ncbi.nlm.nih.gov/books/NBK525964/
  9. https://www.ncbi.nlm.nih.gov/books/NBK441963/
  10. https://medlineplus.gov/skinconditions.html
  11. https://www.aad.org/about/burden-of-skin-disease
  12. https://www.usa.gov/federal-agencies/national-institute-of-arthritis-musculoskeletal-and-skin-diseases
  13. https://www.cdc.gov/niosh/topics/skin/default.html
  14. https://www.skincancer.org/
  15. https://illnesshacker.com/
  16. https://endinglines.com/
  17. https://www.jaad.org/
  18. https://www.psoriasis.org/about-psoriasis/
  19. https://books.google.com/books?
  20. https://www.niams.nih.gov/health-topics/skin-diseases
  21. https://cms.centerwatch.com/directories/1067-fda-approved-drugs/topic/292-skin-infections-disorders
  22. https://www.fda.gov/files/drugs/published/Acute-Bacterial-Skin-and-Skin-Structure-Infections—Developing-Drugs-for-Treatment.pdf
  23. https://dermnetnz.org/topics
  24. https://www.aaaai.org/conditions-treatments/allergies/skin-allergy
  25. https://www.sciencedirect.com/topics/medicine-and-dentistry/occupational-skin-disease
  26. https://aafa.org/allergies/allergy-symptoms/skin-allergies/
  27. https://www.nibib.nih.gov/
  28. https://rxharun.com/resources/category/resources/rxharun/article-types/skin-care-beauty/skin-diseases-types-symptoms-treatment/
  29. https://www.nei.nih.gov/
  30. https://en.wikipedia.org/wiki/List_of_skin_conditions
  31. https://en.wikipedia.org/?title=List_of_skin_diseases&redirect=no
  32. https://en.wikipedia.org/wiki/Skin_condition
  33. https://oxfordtreatment.com/
  34. https://www.nidcd.nih.gov/health/
  35. https://consumer.ftc.gov/articles/w
  36. https://www.nccih.nih.gov/health
  37. https://catalog.ninds.nih.gov/
  38. https://www.aarda.org/diseaselist/
  39. https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Fact-Sheets
  40. https://www.nibib.nih.gov/
  41. https://www.nia.nih.gov/health/topics
  42. https://www.nichd.nih.gov/
  43. https://www.nimh.nih.gov/health/topics
  44. https://www.nichd.nih.gov/
  45. https://www.niehs.nih.gov
  46. https://www.nimhd.nih.gov/
  47. https://www.nhlbi.nih.gov/health-topics
  48. https://obssr.od.nih.gov/
  49. https://www.nichd.nih.gov/health/topics
  50. https://rarediseases.info.nih.gov/diseases
  51. https://beta.rarediseases.info.nih.gov/diseases
  52. https://orwh.od.nih.gov/

 

RX Clinical Pathway Engine

Continue through a complete learning pathway

Move from understanding the topic to symptoms, tests, treatment, medicines, monitoring, and prevention.

Search the complete library
  1. Understand the condition Begin with the essential facts and a clear explanation of the topic.
  2. Recognize symptoms Learn common symptoms, signs, and patterns of presentation.
  3. Know when to seek help Review urgent warning signs and when professional assessment may be needed.
  4. Understand causes and risks Explore causes, risk factors, mechanisms, and contributing conditions.
  5. Explore tests and diagnosis Learn how clinicians assess the condition and which investigations may be discussed.
  6. Learn treatment approaches Review general treatment categories and management principles.
  7. Understand medicines safely Continue to medicine education, uses, precautions, and monitoring.
  8. Plan monitoring and follow-up Understand monitoring, complications, rehabilitation, and follow-up learning.
  9. Review prevention and self-care Explore prevention, healthy routines, and questions to discuss with a clinician.

Conditions & Diseases

Background, symptoms, causes, diagnosis, and care.

Explore this library

Tests & Investigations

Laboratory, imaging, screening, and diagnostic education.

Explore this library

Medicines

Uses, safety, monitoring, and related medicine knowledge.

Explore this library

Cancer Knowledge

Cancer types, screening, oncology, and treatment education.

Explore this library
Doctor visit helper

Prepare before seeing a doctor

A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Avoid heavy lifting, sudden bending, and prolonged bed rest.
  • Use comfortable posture and gentle movement as tolerated.
  • Discuss physiotherapy, X-ray, or MRI only when clinically needed.

OTC medicine safety

  • For mild back pain, pain-relief medicine may be discussed with a doctor or pharmacist.
  • Avoid repeated painkiller use if you have kidney disease, stomach ulcer, uncontrolled blood pressure, or are taking blood thinners.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Back pain with leg weakness, numbness around private area, loss of urine/stool control, fever, cancer history, or major injury needs urgent care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Medicine doctor / pediatrician for children / qualified clinician
Tests to discuss with doctor
  • Temperature chart and hydration assessment
  • CBC with platelet count if fever persists or dengue/other infection is possible
  • Urine test, malaria/dengue tests, chest evaluation, or blood culture only when clinically indicated
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?
  • Do I need antibiotics, or is this more likely viral?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: Pulmonary Embolism

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.