W Shimizu

Summary

Affiliation: Masonic Medical Research Laboratory
Country: USA

Publications

  1. ncbi request reprint Influence of epinephrine, propranolol, and atrial pacing on spatial distribution of recovery time measured by body surface mapping in congenital long QT syndrome
    W Shimizu
    Department of Internal Medicine, National Cardiovascular Center, Osaka, Japan
    J Cardiovasc Electrophysiol 8:1102-14. 1997
  2. ncbi request reprint Improvement of repolarization abnormalities by a K+ channel opener in the LQT1 form of congenital long-QT syndrome
    W Shimizu
    Department of Internal Medicine, National Cardiovascular Center, Osaka, Japan
    Circulation 97:1581-8. 1998
  3. ncbi request reprint Body surface distribution and response to drugs of ST segment elevation in Brugada syndrome: clinical implication of eighty-seven-lead body surface potential mapping and its application to twelve-lead electrocardiograms
    W Shimizu
    Department of Internal Medicine, National Cardiovascular Center, Suita, Osaka, Japan
    J Cardiovasc Electrophysiol 11:396-404. 2000
  4. ncbi request reprint Sympathetic stimulation produces a greater increase in both transmural and spatial dispersion of repolarization in LQT1 than LQT2 forms of congenital long QT syndrome
    Y Tanabe
    Department of Internal Medicine, Okayama University Medical School, Suita, Japan
    J Am Coll Cardiol 37:911-9. 2001
  5. ncbi request reprint Localization of optimal ablation site of idiopathic ventricular tachycardia from right and left ventricular outflow tract by body surface ECG
    S Kamakura
    Division of Cardiology, Department of Internal Medicine, National Cardiovascular Center, Osaka, Japan
    Circulation 98:1525-33. 1998
  6. ncbi request reprint Chronic administration of ghrelin improves left ventricular dysfunction and attenuates development of cardiac cachexia in rats with heart failure
    N Nagaya
    Department of Internal Medicine, National Cardiovascular Center, Fujishirodai, Suita, Osaka, Japan
    Circulation 104:1430-5. 2001
  7. ncbi request reprint Effect of sodium channel blockers on ST segment, QRS duration, and corrected QT interval in patients with Brugada syndrome
    W Shimizu
    Division of Cardiology, Department of Internal Medicine, National Cardiovascular Center, Suita, Osaka, Japan
    J Cardiovasc Electrophysiol 11:1320-9. 2000
  8. ncbi request reprint Paradoxic abbreviation of repolarization in epicardium of the right ventricular outflow tract during augmentation of Brugada-type ST segment elevation
    W Shimizu
    Department of Internal Medicine, National Cardiovascular Center, Suita, Japan
    J Cardiovasc Electrophysiol 12:1418-21. 2001
  9. ncbi request reprint Clinical usefulness of a multielectrode basket catheter for idiopathic ventricular tachycardia originating from right ventricular outflow tract
    T Aiba
    Department of Internal Medicine, National Cardiovascular Center, Osaka, Suita, Japan
    J Cardiovasc Electrophysiol 12:511-7. 2001
  10. ncbi request reprint The role of Purkinje and pre-Purkinje potentials in the reentrant circuit of verapamil-sensitive idiopathic LV tachycardia
    T Aiba
    Division of Cardiology, National Cardiovascular Center, 5-7-1 Fujishirodai, Suita, Osaka, 565-8565 Japan
    Pacing Clin Electrophysiol 24:333-44. 2001

Detail Information

Publications22

  1. ncbi request reprint Influence of epinephrine, propranolol, and atrial pacing on spatial distribution of recovery time measured by body surface mapping in congenital long QT syndrome
    W Shimizu
    Department of Internal Medicine, National Cardiovascular Center, Osaka, Japan
    J Cardiovasc Electrophysiol 8:1102-14. 1997
    ....
  2. ncbi request reprint Improvement of repolarization abnormalities by a K+ channel opener in the LQT1 form of congenital long-QT syndrome
    W Shimizu
    Department of Internal Medicine, National Cardiovascular Center, Osaka, Japan
    Circulation 97:1581-8. 1998
    ....
  3. ncbi request reprint Body surface distribution and response to drugs of ST segment elevation in Brugada syndrome: clinical implication of eighty-seven-lead body surface potential mapping and its application to twelve-lead electrocardiograms
    W Shimizu
    Department of Internal Medicine, National Cardiovascular Center, Suita, Osaka, Japan
    J Cardiovasc Electrophysiol 11:396-404. 2000
    ..Body surface distribution and magnitude of ST segment elevation and their reflection in 12-lead ECGs have not been clarified in Brugada syndrome...
  4. ncbi request reprint Sympathetic stimulation produces a greater increase in both transmural and spatial dispersion of repolarization in LQT1 than LQT2 forms of congenital long QT syndrome
    Y Tanabe
    Department of Internal Medicine, Okayama University Medical School, Suita, Japan
    J Am Coll Cardiol 37:911-9. 2001
    ....
  5. ncbi request reprint Localization of optimal ablation site of idiopathic ventricular tachycardia from right and left ventricular outflow tract by body surface ECG
    S Kamakura
    Division of Cardiology, Department of Internal Medicine, National Cardiovascular Center, Osaka, Japan
    Circulation 98:1525-33. 1998
    ..However, reliable noninvasive methods to localize the optimum ablation site for VT have not been reported. METHODS and..
  6. ncbi request reprint Chronic administration of ghrelin improves left ventricular dysfunction and attenuates development of cardiac cachexia in rats with heart failure
    N Nagaya
    Department of Internal Medicine, National Cardiovascular Center, Fujishirodai, Suita, Osaka, Japan
    Circulation 104:1430-5. 2001
    ..We investigated whether ghrelin improves left ventricular (LV) dysfunction and attenuates cardiac cachexia in rats with chronic heart failure (CHF)...
  7. ncbi request reprint Effect of sodium channel blockers on ST segment, QRS duration, and corrected QT interval in patients with Brugada syndrome
    W Shimizu
    Division of Cardiology, Department of Internal Medicine, National Cardiovascular Center, Suita, Osaka, Japan
    J Cardiovasc Electrophysiol 11:1320-9. 2000
    ..The aim of this study was to examine the effects of Na+ channel blockers on ST segment elevation, QRS, corrected QT (QTc) interval, and ventricular arrhythmias in patients with Brugada syndrome...
  8. ncbi request reprint Paradoxic abbreviation of repolarization in epicardium of the right ventricular outflow tract during augmentation of Brugada-type ST segment elevation
    W Shimizu
    Department of Internal Medicine, National Cardiovascular Center, Suita, Japan
    J Cardiovasc Electrophysiol 12:1418-21. 2001
    ..Our data support the hypothesis that heterogenous response of repolarization across the ventricular wall in the RVOT is responsible for accentuation of ST segment elevation in the right precordial leads...
  9. ncbi request reprint Clinical usefulness of a multielectrode basket catheter for idiopathic ventricular tachycardia originating from right ventricular outflow tract
    T Aiba
    Department of Internal Medicine, National Cardiovascular Center, Osaka, Suita, Japan
    J Cardiovasc Electrophysiol 12:511-7. 2001
    ..The aim of our study was to evaluate the usefulness of a multielectrode basket catheter for ablation of idiopathic VT originating from the RVOT...
  10. ncbi request reprint The role of Purkinje and pre-Purkinje potentials in the reentrant circuit of verapamil-sensitive idiopathic LV tachycardia
    T Aiba
    Division of Cardiology, National Cardiovascular Center, 5-7-1 Fujishirodai, Suita, Osaka, 565-8565 Japan
    Pacing Clin Electrophysiol 24:333-44. 2001
    ..The reentrant circuit of ILVT could be constructed based on the pre-PP, PP, and slow conduction between the PP and pre-PP. Catheter ablation of ILVT was successful at the pre-PP recording site...
  11. ncbi request reprint Acute effects of different atrial pacing sites in patients with atrial fibrillation: comparison of single site and biatrial pacing
    M Ogawa
    Division of Cardiology, Department of Internal Medicine, National Cardiovascular Center, Osaka, Japan
    Pacing Clin Electrophysiol 24:1470-8. 2001
    ..The CS-d paced drive was more effective for suppressing AF induction than biatrial or RAA paced drive by alleviating conduction delay. CS-d and biatrial pacing significantly reduced ARTD compared with RAA pacing...
  12. ncbi request reprint Gene-specific response of dynamic ventricular repolarization to sympathetic stimulation in LQT1, LQT2 and LQT3 forms of congenital long QT syndrome
    T Noda
    Division of Cardiology, Department of Internal Medicine, National Cardiovascular Center, Suita, Osaka, Japan
    Eur Heart J 23:975-83. 2002
    ..This study compared the influence of sympathetic stimulation on continuous corrected QT (QTc) intervals between LQT1, LQT2 and LQT3 forms of the congenital long QT syndrome...
  13. ncbi request reprint Elevated circulating level of ghrelin in cachexia associated with chronic heart failure: relationships between ghrelin and anabolic/catabolic factors
    N Nagaya
    Department of Internal Medicine, National Cardiovascular Center, Osaka, Japan
    Circulation 104:2034-8. 2001
    ..We sought to investigate the pathophysiology of ghrelin in the cachexia associated with chronic heart failure (CHF)...
  14. ncbi request reprint Localized right ventricular morphological abnormalities detected by electron-beam computed tomography represent arrhythmogenic substrates in patients with the Brugada syndrome
    M Takagi
    Division of Cardiology and Radiology, Department of Internal Medicine, National Cardiovascular Center, Suita, Osaka, Japan
    Eur Heart J 22:1032-41. 2001
    ..These morphological abnormalities may be related to arrhythmogenic substrates in patients with the Brugada syndrome...
  15. ncbi request reprint Diagnostic value of plasma levels of brain natriuretic peptide in arrhythmogenic right ventricular dysplasia
    K Matsuo
    Divisions of Cardiology, Department of Internal Medicine, National Cardiovascular Center, Osaka, Japan
    Circulation 98:2433-40. 1998
    ..We hypothesized that BNP is increasingly secreted from the residual myocytes within the atrophic tissue in patients with ARVD...
  16. ncbi request reprint Catecholamines in children with congenital long QT syndrome and Brugada syndrome
    W Shimizu
    Division of Cardiology, Department of Internal Medicine, National Cardiovascular Center, Suita, Osaka, Japan
    J Electrocardiol 34:173-5. 2001
    ..In our preliminary result of patients with Brugada syndrome including a child, isoproterenol infusion was effective to decrease the ST-segment elevation in leads V1-V2 and to suppress the electrical storm of ventricular fibrillation...
  17. ncbi request reprint Hemodynamic, renal, and hormonal effects of ghrelin infusion in patients with chronic heart failure
    N Nagaya
    Department of Internal Medicine, National Cardiovascular Center, Suita, Osaka 565 8565, Japan
    J Clin Endocrinol Metab 86:5854-9. 2001
    ..In summary, iv infusion of ghrelin, a potent GH-releasing peptide, had beneficial hemodynamic effects in patients with CHF in the absence of renal effects...
  18. ncbi request reprint Intraoperative and conformal external-beam radiation therapy in patients with locally advanced pancreatic carcinoma; results from a feasibility phase II study
    J Furuse
    Department of Internal Medicine, National Cancer Center Hospital East, Chiba, Japan
    Hepatogastroenterology 47:1142-6. 2000
    ..The purpose of this study is to clarify the efficacy and safety of a more intensive radiotherapy for those patients...
  19. ncbi request reprint Brugada syndrome: a decade of progress
    C Antzelevitch
    Masonic Medical Research Laboratory, Utica, NY 13501, USA
    Circ Res 91:1114-8. 2002
    ..This minireview briefly summarizes the progress made over the past decade in our understanding of the clinical, genetic, cellular, ionic, and molecular aspects of this disease...
  20. pmc Images in cardiology: Visualisation of activation and repolarisation in congenital long QT syndrome
    W Shimizu
    Heart 88:190. 2002
  21. ncbi request reprint Identifying patterns of spatial current dispersion that characterise and separate the Brugada syndrome and complete right-bundle branch block
    A Kandori
    Central Research Laboratory, Hitachi, Ltd, Tokyo, Japan
    Med Biol Eng Comput 42:236-44. 2004
    ..The findings suggest that an abnormal current from the RVOT to the upper left chest may be a feature of the Brugada syndrome, and that the direction of this current is completely different from that seen in CRBBB...
  22. ncbi request reprint Genetic polymorphisms and haplotypes of the human cardiac sodium channel alpha subunit gene (SCN5A) in Japanese and their association with arrhythmia
    K Maekawa
    Project Team for Pharmacogenetics, National Institute of Health Sciences, 1 18 1 Kamiyoga, Setagaya Ku, Tokyo 158 8501, Japan
    Ann Hum Genet 69:413-28. 2005
    ..This study provides fundamental information necessary to elucidate the effect of genetic variations in SCN5A on channel function and cardiac rhythm in Japanese, and probably in the Asian population...