Synopsis
Identify people at credible risk of catastrophic bleeding, reduce preventable causes, agree resuscitative or comfort priorities, prepare teams and carers without causing avoidable alarm and respond with presence, haemostasis and rapid anxiolysis.
- Catastrophic haemorrhage is rapid, life-threatening bleeding from tumour erosion, vessel fistula, ulceration, thrombocytopenia, coagulopathy or anticoagulant effect; risk must be individualised rather than assumed from diagnosis alone.
- Sentinel bleeds, pulsatile tumour, threatened carotid or major vessel on imaging, recurrent haemoptysis or haematemesis and worsening thrombocytopenia demand urgent specialist review.
- First-line prevention treats an achievable source: local pressure or dressing, radiotherapy, endoscopy, embolisation, surgery, antifibrinolytic or correction of anticoagulant and haematological factors as appropriate.
- Ask how much the patient and family want to know, explain uncertainty and distinguish a preparedness plan from a prediction that bleeding will occur.
- Record whether an actual event should trigger full resuscitation and major-haemorrhage protocol, limited hospital treatment or comfort-only care; DNACPR alone does not answer this.
- At a terminal catastrophic bleed, stay with the person, call for help, use calm voice and touch, position safely, apply pressure when feasible and use dark towels to reduce visual distress.
- Do not leave a conscious frightened patient to search for medicine. Human presence and reassurance are the immediate treatment, because death may occur before a sedative can act.
- When distress persists long enough, give the locally authorised rapid midazolam rescue by the fastest feasible route; route, dose and access must be prescribed and prepared in advance.
- Protect carers and staff with gloves and a post-event debrief, practical cleaning support and bereavement follow-up; witnessing a bleed can be traumatic.
- The gold-standard plan is short, visible and operational: who to call, what to do, where equipment and medicine are, what not to attempt and how the team supports survivors.
Key red flags
Any sentinel bleed from a tumour close to a major vessel warrants urgent review even if observations recover.
Pulsatile bleeding or a new bruit in an ulcerated neck or groin tumour suggests arterial involvement.
Haemoptysis with airway compromise, falling oxygenation or inability to clear blood requires immediate airway and respiratory support.
Haematemesis, melaena, abdominal pain or collapse may indicate arterial gastrointestinal bleeding or aorto-enteric fistula.
Tachycardia, hypotension, mottling, confusion or syncope indicates clinically important loss despite uncertain measured volume.
A rapidly falling platelet count, fibrinogen or haemoglobin can precede overt bleeding in marrow failure or disseminated coagulation.
A DNACPR form does not establish whether transfusion, embolisation, endoscopy or emergency transfer is wanted.
Uncontrollable high-volume bleeding with rapid loss of consciousness may leave only minutes for presence, pressure and preplanned comfort treatment.
Investigation priorities
Define site, volume, tempo, sentinel episodes, triggers, accessible pressure points, tumour anatomy and current antithrombotic treatment.
Management branches
Sentinel bleeding or anatomy indicates a credible major-haemorrhage risk and intervention may provide worthwhile benefit.
- Escalate to the relevant oncology, surgery, endoscopy or interventional team and define source, vessel involvement, haemostatic defects and current antithrombotics.
- Choose local care, radiotherapy, embolisation, covered stent, endoscopic therapy, surgery, reversal or component support according to mechanism and goal.
- Document treatment response and residual risk, then build a crisis plan even when preventive treatment appears successful.