A simple intracavitary bedside method for estimation of the P-R interval.
A simple bedside intracavitary electrocardiographic technique is described. Two electrode catheters are used: one tripolar catheter positioned across the tricuspid valve in order to record the His electrogram, and a hexapolar catheter positioned through the superior caval vein near the sinus node with the proximal electrode and 6 cm lower in the right atrium with the tip electrode. This technique allows a better analysis of intraatrial conduction, widening the interpretation of the P-A interval obtained by the His bundle electrogram.
D000200:Action Potentials; D000328:Adult; D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000503:physiopathology; D002036:Bundle of His / Q000503:physiopathology*; D002404:Catheterization; D002648:Child; D004562:Electrocardiography / Q000379:methods*; D004566:Electrodes; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008991:Monitoring, Physiologic; D014261:Tricuspid Valve