Intermittent concealed atrial conduction demonstrated through intracavitary leads.
An intermittent vanishing of the P wave from a standard electrocardiogram (ECG) while normal atrial activity was recorded on intracavitary leads was observed in a 58 year old man. This intermittent concealed atrial conduction is discussed.
D000200:Action Potentials; D006328:Cardiac Catheterization; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged