Cardiophile MD Archive

Posts Tagged ‘HRAd

EP tracings in sinus rhythm demonstrating the basic intervals

Posted by: Johnson Francis on: 08 Nov, 2009

EP tracings in sinus rhythm demonstrating the basic intervals Click on the image for and enlarged view Upper six tracings (white) show the surface electrocardiogram. The green channel shows right atrial tracings: HRAd: distal pair of high right atrial electrodes; HRAp: proximal pair of high right atrial electrodes. The yellow channel represents His bundle recordings: [...]

Atrial pacing with 2:1 AV block

Posted by: Johnson Francis on: 18 Oct, 2009

Click on the image for an enlarged view Tracings from an electrophysiological study (EPS) with intracardiac and surface electrocardiograms showing 2:1 AV conduction during atrial pacing. The upper six channels in white colour are surface electrocadiograms (leads I, II, III, AVF, V1 and V6). The pacing spikes are sharp deflections of very short duration. The [...]

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