Cardiac tamponade

• What is cardiac tamponade?

  Accumulation of pericardial fluid under pressure
• What are some classical features of cardiac tamponade?

  Beck's triad

  Dyspnoea

  Tachycardia

  Pulsus paradoxus
• What is Beck's triad?

  Hypotension

  Raised JVP

  Muffled heart sounds
• What is pulsus paradoxus?

  Abnormally large drop in BP during inspiration