Vicente Urbistondo Ayestaran

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The success of cardiac resynchronization therapy (CRT) depends on a high percentage of ventricular pacing. We present the electrocardiography and electrograms of a patient who underwent an implantable cardioverter-defibrillator (ICD) with CRT implantation showing a low percentage of ventricular pacing as a result of T wave oversensing of paced QRS. The(More)
We present the case of a 21 year-old woman with unremarkable medical history except for tachycardia episodes. The ECG showed a delta wave pre-excitation by a left lateral pathway. One radiofrequency pulse temporarily terminated the accessory pathway conduction, revealing a nodal conduction with complete left bundle branch block.
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