Álvaro Lozano

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While in sinus rhythm, the patient had a PR interval of 120 ms and an apparently preexcited QRS, with a positive delta wave in inferior and precordial leads. During atrial fibrillation, there was no change in the QRS with respect to baseline, which ruled out a conventional accessory pathway (between the atrium and ventricle). The preexcitation is explained(More)
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