Examqo › Examqo library › Cardiothoracic surgery › Benign and end-stage lung disease · IMLE
Massive haemoptysis
In massive haemoptysis the patient dies from asphyxia, not blood loss, so the first step is protecting the healthy lung — positioning bleeding side down and intubation with a large tube or into the healthy lung — followed by CT angiography and bronchial artery embolisation, since the bleeding comes from these arteries in most cases; surgery is kept for failure or special situations.
Why it matters in the exam
There is no single quantitative definition: values from 100 to 600 mL in 24 hours appear in the literature, but the practical definition is any amount that threatens the airway or haemodynamic stability. A few tens of mL of blood in the airway dead space are enough to asphyxiate, so the exam tests the order of actions. The blood comes from the bronchial arteries (a systemic-pressure system) in most cases, and in a minority from the pulmonary arteries — for example a Rasmussen aneurysm in a tuberculous cavity or catheter injury. Common causes: bronchiectasis, tuberculosis and its sequelae, lung cancer, aspergilloma and CF.
Order of actions: lay the patient bleeding side down so blood does not flow into the healthy lung; oxygen and correction of coagulation; intubation with a large tube (8.0 or more) that allows bronchoscopy, or selective intubation of the main bronchus of the healthy side, a bronchial blocker or a double-lumen tube. Rigid bronchoscopy allows effective suction and bleeding control. If the patient is stable enough — CT angiography identifies the side, the source and the arterial anatomy. Bronchial artery embolisation is the preferred treatment and achieves immediate control in most cases, but there is a rate of rebleeding; a rare and serious complication is spinal cord ischaemia, if the anterior spinal artery arises from the same branch. Inhaled tranexamic acid is used as an adjunct. Surgery (lobectomy) suits failed embolisation, aspergilloma, pulmonary artery injury and trauma.
Emergency surgery during active bleeding carries high mortality, so it is better to stabilise and embolise and to operate later when needed.
Key points
- Death is from asphyxia.
- Bleeding side down.
- Large-tube intubation or into the healthy side.
- Bronchial embolisation is the preferred treatment.
- Surgery for failure or special situations.
Summary table
| Stage | Action | Note |
|---|---|---|
| Airway protection | Bleeding side down, large-tube or selective intubation | Death is from asphyxia |
| Diagnosis | CT angiography, bronchoscopy | Identify side and source |
| First treatment | Bronchial artery embolisation | Risk of spinal cord ischaemia |
| Adjunct treatment | Inhaled tranexamic acid, coagulation correction | Does not replace embolisation |
| Surgery | Failed embolisation, aspergilloma, pulmonary artery injury, trauma | Better after stabilisation |
In the full version for subscribers
- A simple algorithm
- Memory aid
- Exam traps
- 5 review cards
- Enough for IMLE
The full version is open to subscribers of: Cardiothoracic surgery, General surgery, Internal medicine, Emergency medicine, Diagnostic radiology, Medical licensing exam (IMLE).
Subscriber? Read the full topic Plans and prices 25 free questions
Sources
- BTS Guideline for Bronchiectasis in Adults, 2019 — Management of haemoptysis
- Shields' General Thoracic Surgery, 8th edition (2019) — Massive hemoptysis
Sources are given for further reading; the text is written afresh and not copied from them.
Reviewed by the Examqo AI Professor · 2026-11-06. The text may contain errors; when in doubt, check the source.