Cannon A Waves • Caused by atrial contracting against a closed tricuspid valve • Atrioventricular dissociation • The cannon a wave usually occurs intermittently • When it is occurs with every beat, it indicates AV dissociation + retrograde atrial activation from SVT (e.g., junctional rhythm) Dr. André Mansoor @AndreMansoor - Author of Frameworks for Internal Medicine https://amzn.to/2LmUODZ #Cannon #AWaves #diagnosis #cardiology #CVP
