Hyperkalemia induced pacemaker far-field endless loop tachycardia.
This report describes the induction of a far-field endless loop tachycardia by hyperkalemia in a patient with severe heart disease. Ventricular activation was so prolonged that the atrial channel sensed the far-field ventricular deflection within the atrial electrogram beyond the 300 ms postventricular atrial refractory period.
Barold
S S
SS
Genesee Hospital, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA. ssbarold@aol.com
D004562:Electrocardiography; D019544:Equipment Failure Analysis; D006333:Heart Failure / Q000503:physiopathology; D006801:Humans; D006947:Hyperkalemia / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D011188:Potassium / Q000097:blood; D012307:Risk Factors; D013610:Tachycardia / Q000503:physiopathology*
D011188:Potassium