Tadanobu Irie

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Left ventricular (LV) false tendons are usually benign, intraventricular myocardial structures, which may cause functional malfunction or deformation of the LV cavity due to mechanical stretching and dilatation of the LV wall. We present a case of non-ischemic cardiomyopathy complicated with intraventricular dyssynchrony that was caused by complete left(More)
We report the case of a 70-year-old man presenting with the development of torsade de pointes (TDP) during infusion of propofol in the setting of severe hypoalbuminemia. TDP developed 15 hours after the beginning of a standard infusion of propofol, following the development of a prominent U wave and prolongation of the QTc interval. While the serum(More)
BACKGROUND Brugada syndrome (BrS) is genetically heterogeneous. In Japanese BrS patients, except for SCN5A and KCNE5, mutations in the responsible genes have not yet been identified, and therefore the genetic heterogeneity remains poorly elucidated. METHODS AND RESULTS Forty consecutive patients with Brugada-pattern electrocardiogram (ECG) underwent(More)
We determined the prevalence of J waves in the electrocardiograms (ECG) of 120 patients with Wolff-Parkinson-White syndrome in comparison with J-wave prevalence in a control group of 1936 men and women with comparable demographic and ECG characteristics and with normal atrioventricular conduction. J waves were present only during manifest preexcitation in(More)
BACKGROUND It is not known whether the most delayed late potentials are functionally most specific for scar-related ventricular tachycardia (VT) circuits. METHODS AND RESULTS Isochronal late activation maps were constructed to display ventricular activation during sinus rhythm over 8 isochrones. Analysis was performed at successful VT termination sites(More)
A 63-year-old woman underwent electrophysiological studies and radiofrequency catheter ablation of a persistent, drug-refractory atrial tachyarrhythmia (ATA). She had no history of left atrial (LA) surgery or catheter ablation. Positive waves were present in leads II, III, aVF, and V1–V6 of the 12-lead electrocardiogram, inconsistent with typical atrial(More)
We describe a 77-year-old man with Wolff-Parkinson-White syndrome exhibiting double coronary sinus (CS) potentials during retrograde conduction over accessory pathway (AP). The first, low-frequency potential (DP1) was first recorded in the left posterolateral region, while the second, higher frequency signal (DP2) was recorded in a lateral-to-septal(More)