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268 Possible Causes for Repolarization Abnormalities

  • Familial Hypertrophic Cardiomyopathy Type 16

    James T. Willerson , Jay N. Cohn , Hein J.J. Wellens , David R. Holmes Springer Science & Business Media , ٠٦‏/١٢‏/٢٠٠٧ - 2926 من الصفحات Cardiovascular Medicine, 3rd Edition offers the most up-to-date, user-friendly guidance on the evaluation, diagnosis and medical and surgical treatment of heart and vascular disease[…][]

  • Idiopathic Ventricular Fibrillation

    […] alternans and QT dispersion (repolarization abnormality markers).[] Abstract Recent data point to a high incidence of early repolarization abnormalities among patients with idiopathic ventricular fibrillation (IVF).[] In contrast, repolarization abnormality markers did not differ between the two groups.[]

  • Early Repolarization Syndrome

    However, it is unclear whether J waves are more strongly associated with a depolarization abnormality rather than a repolarization abnormality.[] Abnormal repolarization was observed primarily in regions with a prominent J-wave.[] Results suggest association of PVC initiation sites with areas of repolarization abnormalities. Conduction abnormalities were not observed.[]

  • Long QT Syndrome

    Compared with the analysis of the healthy group (n 8), age- and sex-matched pair analysis revealed that the mutation carriers (n 8) had ventricular repolarization abnormality[] Abstract Long QT syndrome (LQTS) is an arrhythmogenic disorder characterized by repolarization abnormalities with a tendency to cause life threatening cardiac events.[] Mutation-induced repolarization abnormalities were reversed by verapamil.[]

  • Long QT Syndrome 13

    abnormality results in the prolongation of corrected QT and QTpeak intervals (P .01); greater combined measure of repolarization morphology (T-wave morphology combination[] The ECG revealed a sinus rhythm with normal voltages, but with a QTc interval of 500 ms (calculated by Bazett's formula) and repolarization abnormalities with negative T waves[] LQTS can be caused by genetic abnormalities that prolong repolarization of the cardiac muscle.[]

  • Familial Ventricular Tachycardia

    Arrhythmogenic right ventricular dysplasia patients exhibit depolarization/repolarization and conduction abnormalities such as inverted T waves in right precordial leads and[] In long QT syndromes, abnormal potassium currents lead to early afterdepolarization.[] Transmural dispersion of repolarization represents the substrate for torsade de pointes.[]

  • Brugada Syndrome

    Repolarization abnormalities included a larger area of ST-segment elevation 2 mV and T-wave inversions.[] Electrocardiogram (ECG) abnormalities indicating Brugada syndrome, include repolarization and depolarization abnormalities in the absence of identifiable structural cardiac[] The development of repolarization-depolarization abnormalities in patients with Brugada syndrome can involve genetic alterations, abnormal neural crest cell migration, improper[]

  • Arrhythmogenic Right Ventricular Dysplasia

    We hypothesized that ventricular depolarization and repolarization abnormalities on the 12-lead surface electrocardiogram (ECG) predict adverse outcome in patients with ARVD[] abnormalities: inverted T waves in right precordial leads [V1, V2, and V3]); and one minor criterion ( 500 ventricular extrasystoles per 24 hours by Holter), and so a diagnosis[] A 56-year-old male with repolarization abnormalities on electrocardiogram (ECG), ventricular arrhythmias, and family history of sudden cardiac death presents with worsening[]

  • Idiopathic Ventricular Fibrillation Not Type Brugada

    (mostly from Southeast Asia) have described patients who had sudden cardiac arrest associated with abnormal J waves. 16-23 The repolarization abnormality that is recorded[] Abnormality in ventricular repolarization dynamics observed in CM5 lead suggests that not only the J wave and ST segment elevation but also the abnormal relationship of QT[] In contrast, beta-blockers accentuated repolarization abnormalities. The effects of antiarrhythmic drugs are summarized in Table 2 .[]

  • Torsades De Pointes

    Performing periodic ECGs with prompt removal of offending agent when repolarization abnormalities are appreciated is ideal.[] These steps are particularly important in those with underlying repolarization abnormalities and those who have previously experienced drug-induced TdP. 2015 The British Pharmacological[] Torsades de Pointes (TP) is an arrhythmia that is a result of aberrant repolarization/QT abnormalities.[]

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