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Educational draft · awaiting clinical reviewUse Rapid for revision, not patient-care decisions. Check current national and local guidance and the BNF or BNFC before acting.

Cardiac tamponade

Cardiology · UK scope · Sources checked 27 Aug 2026 · Clinical review pending

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Escalate

Cardiac tamponade is an obstructive-shock emergency. Call senior cardiology/critical care and a drainage-capable team immediately; deteriorating patients need urgent echo-guided pericardiocentesis or surgical drainage, not prolonged diagnostic work-up.

Synopsis

Recognise haemodynamic pericardial compression, use echo without delaying source control and choose percutaneous versus surgical drainage safely.

  • Tamponade is a haemodynamic diagnosis: intrapericardial pressure impairs filling and output; effusion size alone does not define it.
  • Rapid haemopericardium can cause arrest with a small volume, while slowly accumulating malignant fluid may be very large before collapse.
  • Tachycardia and raised JVP are common; Beck's triad is insensitive and may be altered by hypovolaemia or ventilation.
  • Pulsus paradoxus above 10 mmHg supports tamponade but can be absent with severe LV dysfunction, ASD, pulmonary hypertension or positive-pressure ventilation.
  • Echo clues include right-atrial systolic collapse, right-ventricular early-diastolic collapse, marked respiratory inflow variation and a plethoric IVC.
  • Drainage is definitive; small fluid boluses may bridge selected preload-depleted patients but must not delay the procedure.
  • Avoid unnecessary diuresis, vasodilation and positive-pressure ventilation before decompression because they can precipitate collapse.
  • Trauma, type A aortic dissection, clotted haemopericardium and purulent/loculated effusion often require surgery rather than routine needle drainage.

Key red flags

Decompensated shock

Hypotension, confusion, oliguria, mottling, rising lactate and syncope indicate failing output and demand immediate drainage.

Arrest phenotype

PEA after cardiac intervention, penetrating trauma or known effusion should trigger immediate ultrasound and resuscitative source control.

Investigation priorities

01
Immediate focused TTEFirst step

Confirm fluid and haemodynamic effects and plan the safest access.

Management branches

CrashUnstable tamponade

Shock, rapidly worsening perfusion or peri-arrest state with suspected effusion.

  1. Call resuscitation, interventional cardiology and cardiothoracic/critical-care help; monitor, obtain IV/IO access and perform immediate focused echo during ongoing ABCDE care.
  2. Avoid induction/positive-pressure ventilation if possible until decompressed; if unavoidable, use expert haemodynamic planning with vasopressor and drainage readiness.
  3. Proceed to urgent image-guided pericardiocentesis when appropriate; choose emergency surgical drainage for trauma, suspected aortic rupture, clotted/postoperative or inaccessible effusion.
  4. A cautious crystalloid bolus can bridge clear preload depletion, but stop if congestion worsens and never substitute it for drainage.
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Sources and review status5 sources · checked 27 Aug 2026 · clinical review pending+
Sources

Sources and review status

National guidance is shown before implementation-dependent detail. Apply principles in context and verify current guidance when a decision affects care. Source check completed 27 Aug 2026; clinical approval remains outstanding.

  • 2025 ESC Guidelines for myocarditis and pericarditisCurrent effusion/tamponade recognition and management framework.
  • ESC: Pericardiocentesis in cardiac tamponadeImage-guided procedural indications and access principles.
  • ESC: Cardiac tamponade—a clinical challengeUrgency, ventilation and bridging principles.
  • ESC: Tamponade due to aortic dissectionSurgical priority and controlled-drainage caveat.
  • Resuscitation Council UK: Adult advanced life support guidelinesCurrent UK peri-arrest and reversible-cause framework.

Editorial contact: Doctor’s Passport editorial team. Source-check date is separate from clinical approval. Report a content problem · Content changes

Authoring stateRapid draftClinical stateAwaiting reviewJurisdictionUnited Kingdom