JVP (cannon waves)

FREE subscriptions for doctors and students... click here
You have 3 more open access pages.

Cannon waves are very large A waves that occur when the right atrium contracts against a closed tricuspid valve.

They occur irregularly in complete heart block and ventricular tachycardia, conditions that are characterised by atrioventricular dissociation with random occasional simultaneous atrial and ventricular contractions.

Last reviewed 01/2018