Cardiophile MD Archive

Posts Tagged ‘QRS complexes

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: [...]

Pacing through lateral cardiac vein

Posted by: Johnson Francis on: 11 Sep, 2009

Click on the image for a larger view ECG of pacing through lateral cardiac vein. Pacing through lateral cardiac vein was done because of prior triple valve replacement (mitral, tricuspid and aortic) which precluded trans venous right ventricular pacing. The basic rhythm is atrial fibrillation and the fifth and last beats are paced. The tall [...]