A 56 year old man with breathlessness and raised JVP.
Pericardial effusion with electrical alternans
- The QRS axis alternates between beats. In this example it is best seen in the chest leads where the QRS points in different directions!
- This is rarely seen and is due to the heart moving in the effusion.
Thank you to Dr Mick Bialas of Llandough Hospital for this recording.