1. The power of P in the elderly: Small biphasic wave, big impact
Larissa Fabritz, MD, FESC 
Heart Rhythm 
Volume 13, Issue 3, Pages (March 2016)
DOI: /j.hrthm
Copyright © 2016 The Authors Terms and Conditions

2. Figure 1
The great wave revisited. Adapted from “In the well of a wave off Kanagawa” published by Katsushika Hokusai in order to depict the prolonged and biphasic P wave in interatrial block.
Heart Rhythm  , DOI: ( /j.hrthm )
Copyright © 2016 The Authors Terms and Conditions