Etiology-pericardial tamponade

• Any cause of pericarditis but espec malignancy, infectious, uremia, ascending AoD, myocardial rupture, periprocedural complication, trauma, post-cardiotomy
• Rapidly accumulating effusions most likely to cause tamponade b/c no time for pericardium to stretch (eg, to ↑ compliance) and accommodate ↑ intrapericardial fluid volume