![ekg show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/040/759/small/ekg.jpg)
Summary: p wave, right atrial overload, left atrial overload, cardiac pacing (failure to capture and failure to sense), tricyclic overdose, respiratory sinus arrhythmia
Summary: p wave, right atrial overload, left atrial overload, cardiac pacing (failure to capture and failure to sense), tricyclic overdose, respiratory sinus arrhythmia