Affiliation: Johns Hopkins University
- Catheter ablation of accessory pathways, atrioventricular nodal reentrant tachycardia, and the atrioventricular junction: final results of a prospective, multicenter clinical trial. The Atakr Multicenter Investigators GroupH Calkins
Johns Hopkins University School of Medicine, Baltimore, MD, USA
Circulation 99:262-70. 1999..The purpose of this study was to evaluate the safety and efficacy of a temperature-controlled radiofrequency catheter ablation system...
- Cost-effectiveness of catheter ablation in patients with ventricular tachycardiaH Calkins
Johns Hopkins University, Baltimore, MD, USA
Circulation 101:280-8. 2000..The analysis used a societal perspective for a hypothetical cohort of VT patients with implantable cardioverter-defibrillators, who were experiencing frequent shocks...
- Resuscitation after prolonged ventricular fibrillation with use of monophasic and biphasic waveform pulses for external defibrillationC T Leng
Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
Circulation 101:2968-74. 2000..However, they have not been rigorously tested against monophasic (MP) waveforms in clinical models of external defibrillation, particularly where rescue from prolonged VF is the general rule...
- Laser ablation of the pulmonary veins by using a fiberoptic balloon catheter: implications for treatment of paroxysmal atrial fibrillationN M Fried
Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, Maryland 21205, USA
Lasers Surg Med 28:197-203. 2001..A new fiberoptic balloon catheter was tested as an alternative to radiofrequency catheter ablation for creation of circumferential thermal lesions at the pulmonary vein orifice...
- Electrical induction of ventricular fibrillation for resuscitation from postcountershock pulseless and asystolic cardiac arrestsC T Leng
Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, The Johns Hopkins University, Baltimore, MD, USA
Circulation 104:723-8. 2001..It remains unclear, however, whether harmful effects are due primarily to initial countershock of ischemic myocardium or to resultant postdefibrillation rhythms (ie, pulseless electrical activity [PEA] or asystole)...
- Catheter ablation of ventricular tachycardia in patients with structural heart disease using cooled radiofrequency energy: results of a prospective multicenter study. Cooled RF Multi Center Investigators GroupH Calkins
Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
J Am Coll Cardiol 35:1905-14. 2000..The purpose of this multicenter study was to evaluate the safety and efficacy of a radiofrequency (RF) catheter ablation system with internal saline irrigation...
- Linear lesions in myocardium created by Nd:YAG laser using diffusing optical fibers: in vitro and in vivo resultsN M Fried
Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland 21205, USA
Lasers Surg Med 27:295-304. 2000..This study uses laser energy delivered through diffusing optical fibers as an alternative to radiofrequency energy for the creation of linear lesions in cardiac tissue in a single application...
- Catheter ablation for cardiac arrhythmiasH Calkins
Department of Medicine, Johns Hopkins Hospital, Baltimore, Maryland, USA
Med Clin North Am 85:473-502, xii. 2001..Catheter ablation is considered as an alternative to pharmacologic therapy in the treatment of these cardiac arrhythmias...
- Prospective randomized comparison of the safety and effectiveness of placement of endocardial pacemaker and defibrillator leads using the extrathoracic subclavian vein guided by contrast venography versus the cephalic approachH Calkins
Department of Medicine, Johns Hopkins University School of Medicine, 600 N Wolfe St, Baltimore, MD 21287, USA
Pacing Clin Electrophysiol 24:456-64. 2001..These findings suggest that the contrast-guided approach to the extrathoracic portion of the subclavian vein should be considered as an alternative to the cephalic approach...
- Beat-to-beat QT interval variability: novel evidence for repolarization lability in ischemic and nonischemic dilated cardiomyopathyR D Berger
Johns Hopkins School of Medicine, Baltimore, MD 21287, USA
Circulation 96:1557-65. 1997..We sought to test the hypothesis that beat-to-beat QT interval variability is increased in DCM patients compared with control subjects...
- Ventricular pacing with premature excitation for treatment of hypertensive-cardiac hypertrophy with cavity-obliterationD A Kass
Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
Circulation 100:807-12. 1999..Accordingly, we hypothesized that pacing may improve exercise tolerance long-term in this syndrome...
- Catheter ablation for cardiac arrhythmiasL Lickfett
Johns Hopkins Hospital, Baltimore, Maryland, USA
Minerva Cardioangiol 50:189-207. 2002..In this article we will review the current state of knowledge about the technique, indications, and results of catheter ablation for the treatment of cardiac arrhythmias...
- Lead configuration for defibrillator implantation in a patient with congenital heart disease and a mechanical prosthetic tricuspid valveC T Leng
Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
Pacing Clin Electrophysiol 24:1291-2. 2001..Their lead configuration deviates substantially from existing designs in its primary use of a coronary sinus defibrillation coil and a left-sided subcutaneous array to distribute current across the ventricular myocardium...
- Fludrocortisone acetate to treat neurally mediated hypotension in chronic fatigue syndrome: a randomized controlled trialP C Rowe
Departments of Pediatrics and Medicine, Johns Hopkins Hospital, 600 N Wolfe St, Baltimore, MD 21287, USA
JAMA 285:52-9. 2001..Further studies are needed to determine whether other medications or combination therapy are more effective in treating orthostatic intolerance in patients with CFS...
- Interaction between neuronal nitric oxide synthase and inhibitory G protein activity in heart rate regulation in conscious miceP Jumrussirikul
Department of Medicine, Department of Neurology, Department of Neuroscience, Department of Physiology, and Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland 21287, USA
J Clin Invest 102:1279-85. 1998..Thus, neuronally derived NO and cardiac inhibitory G protein activity serve as parallel pathways to mediate autonomic slowing of heart rate in the mouse...