Cite this article as:
Tessa Davis. Pericarditis, Don't Forget the Bubbles, 2014. Available at:

Pericardial effusion may produce QRS voltages less than 5 mm in all limb leads

Sub‐epicardial myocardial damage causes time dependent change:

  • Initial ST segment elevation in the left ventricular leads
  • ST segment returns to normal within 2‐3 days
  • T wave inversion (with isoelectric ST segment) 2‐4 weeks after the onset of pericarditis