Saman Nazarian

Summary

Affiliation: Johns Hopkins University
Country: USA

Publications

  1. pmc Feasibility of real-time magnetic resonance imaging for catheter guidance in electrophysiology studies
    Saman Nazarian
    Department of Medicine, Division of Cardiology, Johns Hopkins Hospital, Carnegie 592C, 600 N Wolfe St, Baltimore, MD 21287, USA
    Circulation 118:223-9. 2008
  2. ncbi request reprint New technologies and therapies for cardiac arrhythmias
    S Nazarian
    Johns Hopkins University, Baltimore, MD 21287, USA
    Minerva Cardioangiol 58:731-40. 2010
  3. pmc Clinical predictors of conduction disease progression in type I myotonic muscular dystrophy
    Saman Nazarian
    Department of Medicine, Johns Hopkins University School of Medicine and the Kennedy Krieger Institute, Baltimore, Maryland 21287, USA
    Pacing Clin Electrophysiol 34:171-6. 2011
  4. doi request reprint A prospective evaluation of a protocol for magnetic resonance imaging of patients with implanted cardiac devices
    Saman Nazarian
    Johns Hopkins University, Baltimore, Maryland 21287, USA
    Ann Intern Med 155:415-24. 2011
  5. pmc QRS prolongation in myotonic muscular dystrophy and diffuse fibrosis on cardiac magnetic resonance
    Saman Nazarian
    Department of Medicine Cardiology, Johns Hopkins University, Baltimore, Maryland 21287, USA
    Magn Reson Med 64:107-14. 2010
  6. doi request reprint Persistent left ventricular dilatation in tachycardia-induced cardiomyopathy patients after appropriate treatment and normalization of ejection fraction
    Gopi Dandamudi
    Krannert Institute of Cardiology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
    Heart Rhythm 5:1111-4. 2008
  7. pmc Feasibility of endoscopic guidance for nonsurgical transthoracic atrial and ventricular epicardial ablation
    Saman Nazarian
    Department of Medicine, Division of Cardiology, Johns Hopkins Hospital, Baltimore, Maryland 21287, USA
    Heart Rhythm 5:1115-9. 2008
  8. doi request reprint Conventional pulmonary vein isolation compared with the "box isolation" method: a randomized clinical trial
    Karuna Chilukuri
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Interv Card Electrophysiol 32:137-46. 2011
  9. doi request reprint Predictors of high defibrillation threshold in the modern era
    Edward F Lin
    Johns Hopkins University, Baltimore, Maryland, USA
    Pacing Clin Electrophysiol 36:231-7. 2013
  10. doi request reprint Incidence and predictors of left atrial thrombus prior to catheter ablation of atrial fibrillation
    Daniel Scherr
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
    J Cardiovasc Electrophysiol 20:379-84. 2009

Detail Information

Publications60

  1. pmc Feasibility of real-time magnetic resonance imaging for catheter guidance in electrophysiology studies
    Saman Nazarian
    Department of Medicine, Division of Cardiology, Johns Hopkins Hospital, Carnegie 592C, 600 N Wolfe St, Baltimore, MD 21287, USA
    Circulation 118:223-9. 2008
    ..In this study, we sought to test the feasibility of performing electrophysiology studies with real-time MRI guidance...
  2. ncbi request reprint New technologies and therapies for cardiac arrhythmias
    S Nazarian
    Johns Hopkins University, Baltimore, MD 21287, USA
    Minerva Cardioangiol 58:731-40. 2010
    ..This review focuses on improved imaging modalities used in the modern electrophysiology laboratory...
  3. pmc Clinical predictors of conduction disease progression in type I myotonic muscular dystrophy
    Saman Nazarian
    Department of Medicine, Johns Hopkins University School of Medicine and the Kennedy Krieger Institute, Baltimore, Maryland 21287, USA
    Pacing Clin Electrophysiol 34:171-6. 2011
    ..We sought to characterize the trends and predictors of time-dependent electrocardiographic (ECG) variations in patients with DM1...
  4. doi request reprint A prospective evaluation of a protocol for magnetic resonance imaging of patients with implanted cardiac devices
    Saman Nazarian
    Johns Hopkins University, Baltimore, Maryland 21287, USA
    Ann Intern Med 155:415-24. 2011
    ..Magnetic resonance imaging (MRI) is avoided in most patients with implanted cardiac devices because of safety concerns...
  5. pmc QRS prolongation in myotonic muscular dystrophy and diffuse fibrosis on cardiac magnetic resonance
    Saman Nazarian
    Department of Medicine Cardiology, Johns Hopkins University, Baltimore, Maryland 21287, USA
    Magn Reson Med 64:107-14. 2010
    ..The SNRV of the left ventricle is associated with QRS prolongation, likely due to late depolarization of tissue within islands of patchy fibrosis. The association of SNRV with future clinical events warrants further study...
  6. doi request reprint Persistent left ventricular dilatation in tachycardia-induced cardiomyopathy patients after appropriate treatment and normalization of ejection fraction
    Gopi Dandamudi
    Krannert Institute of Cardiology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
    Heart Rhythm 5:1111-4. 2008
    ..Tachycardia-induced cardiomyopathy (TIC) seems to be a form of reversible cardiomyopathy. With recurrence, TIC can be more severe and may increase the risk for sudden cardiac death...
  7. pmc Feasibility of endoscopic guidance for nonsurgical transthoracic atrial and ventricular epicardial ablation
    Saman Nazarian
    Department of Medicine, Division of Cardiology, Johns Hopkins Hospital, Baltimore, Maryland 21287, USA
    Heart Rhythm 5:1115-9. 2008
    ..The safety, efficacy, and applicability of epicardial catheter ablation likely will improve with direct visualization of the pericardial space...
  8. doi request reprint Conventional pulmonary vein isolation compared with the "box isolation" method: a randomized clinical trial
    Karuna Chilukuri
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Interv Card Electrophysiol 32:137-46. 2011
    ..This study compares the acute and long-term efficacy of the box isolation method with conventional circumferential pulmonary vein isolation (PVI) for catheter ablation of AF...
  9. doi request reprint Predictors of high defibrillation threshold in the modern era
    Edward F Lin
    Johns Hopkins University, Baltimore, Maryland, USA
    Pacing Clin Electrophysiol 36:231-7. 2013
    ..Identification of the predictors of elevated DFT may allow selective application of DFT testing. However, the clinical characteristics of patients with high DFT in the modern era have not been well-defined...
  10. doi request reprint Incidence and predictors of left atrial thrombus prior to catheter ablation of atrial fibrillation
    Daniel Scherr
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
    J Cardiovasc Electrophysiol 20:379-84. 2009
    ..However, the incidence and predictors of LA thrombus detected with TEE have not been systematically examined in this setting...
  11. ncbi request reprint High prevalence of catecholamine-facilitated focal ventricular tachycardia in patients with arrhythmogenic right ventricular dysplasia/cardiomyopathy
    Binu Philips
    Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
    Circ Arrhythm Electrophysiol 6:160-6. 2013
    ..We hypothesized that VT in arrhythmogenic right ventricular dysplasia/cardiomyopathy shows a high degree of association with the PVC at baseline...
  12. doi request reprint Association of transseptal punctures with isolated migraine aura in patients undergoing catheter ablation of cardiac arrhythmias
    Karuna Chilukuri
    Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287 0409, USA
    J Cardiovasc Electrophysiol 20:1227-30. 2009
    ..TSC causes a transient iatrogenic atrial septal defect that can predispose patients to migraine episodes. However, isolated migraine aura episodes in patients undergoing TSC have not been described...
  13. doi request reprint Outcomes in patients requiring cardioversion following catheter ablation of atrial fibrillation
    Karuna Chilukuri
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
    J Cardiovasc Electrophysiol 21:27-32. 2010
    ..This study reports the outcomes of patients who underwent cardioversion for persistent AF or atrial flutter following an AF ablation procedure...
  14. doi request reprint Long- and short-term temporal stability of complex fractionated atrial electrograms in human left atrium during atrial fibrillation
    Daniel Scherr
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
    J Cardiovasc Electrophysiol 20:13-21. 2009
    ..Complex fractionated atrial electrograms (CFAEs) have been reported as targets for catheter ablation of atrial fibrillation (AF). However, the temporal stability of CFAE sites remains poorly defined...
  15. doi request reprint Incidence and predictors of periprocedural cerebrovascular accident in patients undergoing catheter ablation of atrial fibrillation
    Daniel Scherr
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
    J Cardiovasc Electrophysiol 20:1357-63. 2009
    ..Cerebrovascular accident (CVA) is a serious complication of catheter ablation of atrial fibrillation (AF). The incidence and clinical predictors of periprocedural CVA in patients undergoing AF ablation are not fully understood...
  16. doi request reprint Dual antiplatelet therapy and heparin "bridging" significantly increase the risk of bleeding complications after pacemaker or implantable cardioverter-defibrillator device implantation
    Christine Tompkins
    Johns Hopkins Hospital, Baltimore, Maryland, USA
    J Am Coll Cardiol 55:2376-82. 2010
    ..This study was designed to assess the risk of significant bleeding complications in patients receiving antiplatelet or anticoagulation medications at the time of implantable cardioverter-defibrillator (ICD) device implantation...
  17. doi request reprint Transoesophageal echocardiography predictors of periprocedural cerebrovascular accident in patients undergoing catheter ablation of atrial fibrillation
    Karuna Chilukuri
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, 4940 Eastern Avenue, A 1 East, Baltimore, MD 21224, USA
    Europace 12:1543-9. 2010
    ....
  18. ncbi request reprint Incidence and outcomes of protamine reactions in patients undergoing catheter ablation of atrial fibrillation
    Karuna Chilukuri
    Department of Medicine, Division of Cardiology, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
    J Interv Card Electrophysiol 25:175-81. 2009
    ..The purpose of this study is to describe the incidence and outcome of protamine reactions and analyze the risk factors in patients undergoing catheter ablation of AF...
  19. ncbi request reprint Impact of heart rhythm status on registration accuracy of the left atrium for catheter ablation of atrial fibrillation
    Jun Dong
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
    J Cardiovasc Electrophysiol 18:1269-76. 2007
    ..However, the impact of the heart rhythm change on the accuracy of left atrium (LA) registration has not been studied...
  20. ncbi request reprint Long-term single procedure efficacy of catheter ablation of atrial fibrillation
    Aamir Cheema
    Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Interv Card Electrophysiol 15:145-55. 2006
    ..Two important limitations of the data regarding the outcomes of catheter ablation of atrial fibrillation (AF) are the short-term follow-up used in most published studies and the lack of single-procedure outcomes...
  21. doi request reprint The effect of antiarrhythmic medication management on atrial fibrillation ablation outcomes
    Jonathan W Dukes
    Division of Cardiology, Department of Medicine, The Johns Hopkins Hospital, Maryland, USA
    J Cardiovasc Electrophysiol 24:882-7. 2013
    ..It is unknown if AA use at the time of ablation affects procedural outcome. This study compares the AF ablation outcomes of patients who underwent ablation while on AA medications to those who were not on AA medications...
  22. ncbi request reprint Incidence and time course of early recovery of pulmonary vein conduction after catheter ablation of atrial fibrillation
    Aamir Cheema
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287 0409, USA
    J Cardiovasc Electrophysiol 18:387-91. 2007
    ..Although it is well recognized that recovery of pulmonary vein (PV) conduction is common among patients who fail atrial fibrillation (AF) ablation, little is known about the precise time course of recurrence...
  23. pmc Myocardial structural associations with local electrograms: a study of postinfarct ventricular tachycardia pathophysiology and magnetic resonance-based noninvasive mapping
    Takeshi Sasaki
    Department of Medicine Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
    Circ Arrhythm Electrophysiol 5:1081-90. 2012
    ..We aimed to quantify these associations to gain insights regarding LGE-CMR image characteristics of tissues and critical sites that support postinfarct ventricular tachycardia (VT)...
  24. pmc Clinical utility and safety of a protocol for noncardiac and cardiac magnetic resonance imaging of patients with permanent pacemakers and implantable-cardioverter defibrillators at 1.5 tesla
    Saman Nazarian
    Department of Cardiology, Johns Hopkins Hospital, Carnegie 568, 600 N Wolfe St, Baltimore, MD 21287, USA
    Circulation 114:1277-84. 2006
    ..We sought to evaluate the diagnostic utility and safety of noncardiac and cardiac MRI at 1.5T using a protocol that incorporates device selection and programming and limits the estimated specific absorption rate of MRI sequences...
  25. pmc Impact of nonischemic scar features on local ventricular electrograms and scar-related ventricular tachycardia circuits in patients with nonischemic cardiomyopathy
    Takeshi Sasaki
    Departments of Cardiology, Biostatistics, and Radiology, Johns Hopkins University, Baltimore, MD and Division of Radiology and Imaging Sciences, NIH Clinical Center, National Institute of Biomedical Imaging and Bioengineering, Bethesda, MD
    Circ Arrhythm Electrophysiol 6:1139-47. 2013
    ..We aimed to quantify the association of scar on late gadolinium-enhanced cardiac magnetic resonance with local electrograms and ventricular tachycardia circuit sites in patients with nonischemic cardiomyopathy...
  26. ncbi request reprint Predictive value of obstructive sleep apnoea assessed by the Berlin Questionnaire for outcomes after the catheter ablation of atrial fibrillation
    Karuna Chilukuri
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    Europace 11:896-901. 2009
    ..The purpose of this study is to determine whether OSA assessed by the simple tool, the Berlin Questionnaire (BQ), is useful in predicting the efficacy of catheter ablation of AF...
  27. ncbi request reprint Circumferential ablation with pulmonary vein isolation in permanent atrial fibrillation
    Aamir Cheema
    Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
    Am J Cardiol 99:1425-8. 2007
    ..In conclusion, study results suggest that circumferential ablation with PV isolation has moderate efficacy in patients with permanent AF. Efficacy is limited in those in continuous AF for >12 months...
  28. doi request reprint Effects of surgical and endoscopic electrocautery on modern-day permanent pacemaker and implantable cardioverter-defibrillator systems
    Alan Cheng
    Section for Cardiac Electrophysiology, Division of Cardiovascular Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
    Pacing Clin Electrophysiol 31:344-50. 2008
    ..The ability of newer devices to withstand system malfunction or failure during surgery/endoscopy remains unknown...
  29. doi request reprint Continuation of warfarin during pacemaker or implantable cardioverter-defibrillator implantation: a randomized clinical trial
    Alan Cheng
    Section of Cardiac Electrophysiology, Division of Cardiology, Johns Hopkins Medical Institutes, Baltimore, Maryland, USA
    Heart Rhythm 8:536-40. 2011
    ..Prior studies demonstrate that continuation of warfarin may be safer when compared with strategies requiring interruption and/or heparin bridging. Limited data from randomized trials exist...
  30. pmc Characterization of acute and subacute radiofrequency ablation lesions with nonenhanced magnetic resonance imaging
    Timm Dickfeld
    Division of Cardiology, Johns Hopkins School of Medicine, Baltimore, Maryland 21201, USA
    Heart Rhythm 4:208-14. 2007
    ..However, MRI patterns after RF ablation have not been well investigated...
  31. pmc Impact of scar, viable myocardium, and epicardial fat on substrate identification of ventricular tachycardia in a case with nonischemic cardiomyopathy
    Takeshi Sasaki
    Medicine Cardiology Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
    Pacing Clin Electrophysiol 35:e345-8. 2012
    ..This case provides a unique opportunity to explore the reliability of electrical surrogates of scar in nonischemic cardiomyopathy...
  32. doi request reprint Initial experience with magnetic resonance imaging of atrial scar and co-registration with electroanatomic voltage mapping during atrial fibrillation: success and limitations
    David D Spragg
    Division of Cardiology, Johns Hopkins Hospital, Baltimore, Maryland, USA
    Heart Rhythm 9:2003-9. 2012
    ..Early studies have suggested that delayed enhancement magnetic resonance imaging (DE-MRI) of the left atrium (LA) can assist in performing repeat ablation procedures...
  33. doi request reprint Demographic profile of patients undergoing catheter ablation of atrial fibrillation
    Hana Hoyt
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
    J Cardiovasc Electrophysiol 22:994-8. 2011
    ..Catheter ablation is a widely accepted treatment for drug refractory atrial fibrillation (AF). The purpose of our study was to examine secular trends in the demographic profile of patients undergoing AF ablation...
  34. doi request reprint Complications arising from catheter ablation of atrial fibrillation: temporal trends and predictors
    Hana Hoyt
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
    Heart Rhythm 8:1869-74. 2011
    ..The reported complication rate of catheter ablation of atrial fibrillation (AF) varies...
  35. doi request reprint The critical isthmus sites of ischemic ventricular tachycardia are in zones of tissue heterogeneity, visualized by magnetic resonance imaging
    Heidi L Estner
    Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland 20215, USA
    Heart Rhythm 8:1942-9. 2011
    ..A need exists to develop alternative approaches to VT ablation that provide an improved delineation of the arrhythmogenic substrate...
  36. pmc Quantitative assessment of artifacts on cardiac magnetic resonance imaging of patients with pacemakers and implantable cardioverter-defibrillators
    Takeshi Sasaki
    Department of Medicine Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    Circ Cardiovasc Imaging 4:662-70. 2011
    ..This study aims to evaluate the extent of artifacts on cardiac magnetic resonance (CMR) in patients with PM and ICD (PM/ICD)...
  37. ncbi request reprint A prospective study evaluating the role of obesity and obstructive sleep apnea for outcomes after catheter ablation of atrial fibrillation
    Karuna Chilukuri
    Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
    J Cardiovasc Electrophysiol 21:521-5. 2010
    ..The purpose of this study was to prospectively determine the effects of obesity, assessed by the body mass index (BMI) and OSA on the efficacy of catheter ablation of AF...
  38. ncbi request reprint Direct imaging of transvenous radiofrequency cardiac ablation using a steerable fiberoptic infrared endoscope
    Bradley P Knight
    Division of Cardiology, Department of Internal Medicine, University of Chicago, Chicago, Illinois, USA
    Heart Rhythm 2:1116-21. 2005
    ..Direct imaging through blood has been achieved in vivo using fiberoptics and infrared wavelength technology...
  39. pmc Magnetic resonance assessment of the substrate for inducible ventricular tachycardia in nonischemic cardiomyopathy
    Saman Nazarian
    Department of Medicine Cardiology, Johns Hopkins Hospital, Baltimore, MD 21287, USA
    Circulation 112:2821-5. 2005
    ..However, the substrate for ventricular arrhythmia in patients with nonischemic cardiomyopathy remains poorly understood. We hypothesized that the distribution of scar identified by MRI is predictive of inducible ventricular tachycardia...
  40. pmc Feasibility of image-based simulation to estimate ablation target in human ventricular arrhythmia
    Hiroshi Ashikaga
    Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
    Heart Rhythm 10:1109-16. 2013
    ..Previous studies suggest that magnetic resonance imaging with late gadolinium enhancement (LGE) may identify slowly conducting tissues in scar-related ventricular tachycardia (VT)...
  41. pmc Cardiac magnetic resonance T1 mapping of left atrial myocardium
    Roy Beinart
    Division of Cardiology, Johns Hopkins University, Baltimore, Maryland MD 21287, USA
    Heart Rhythm 10:1325-31. 2013
    ..Cardiac magnetic resonance (CMR) T1 mapping is an emerging tool for objective quantification of myocardial fibrosis...
  42. pmc Magnetic resonance image intensity ratio, a normalized measure to enable interpatient comparability of left atrial fibrosis
    Irfan M Khurram
    Department of Medicine Cardiology, Johns Hopkins University, Baltimore, Maryland
    Heart Rhythm 11:85-92. 2014
    ..The measurement of late gadolinium-enhanced magnetic resonance imaging (LGE-MRI) intensity in arbitrary units limits the objectivity of thresholds for focal scar detection and interpatient comparisons of scar burden...
  43. ncbi request reprint Novel electrode design for potentially painless internal defibrillation also allows for successful external defibrillation
    Venku Jayanti
    Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21287 0409, USA
    J Cardiovasc Electrophysiol 18:1095-100. 2007
    ....
  44. pmc Association of electrocardiographic and imaging surrogates of left ventricular hypertrophy with incident atrial fibrillation: MESA (Multi-Ethnic Study of Atherosclerosis)
    Jonathan Chrispin
    Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland Electronic address
    J Am Coll Cardiol 63:2007-13. 2014
    ..This study sought to examine the association between left ventricular hypertrophy (LVH), deļ¬ned by cardiac magnetic resonance (CMR) and electrocardiography (ECG), with incident atrial fibrillation (AF)...
  45. pmc Association of QRS duration with left ventricular structure and function and risk of heart failure in middle-aged and older adults: the Multi-Ethnic Study of Atherosclerosis (MESA)
    Leonard Ilkhanoff
    Department of Medicine, Division of Cardiology, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
    Eur J Heart Fail 14:1285-92. 2012
    ..We sought to determine whether QRSd is associated with incident HF and measures of cardiac structure and function by cardiac MRI...
  46. doi request reprint Outcomes of catheter ablation of ventricular tachycardia in arrhythmogenic right ventricular dysplasia/cardiomyopathy
    Binu Philips
    Division of Cardiology, Department of Medicine, The Johns Hopkins Hospital, Baltimore, MD 21287, USA
    Circ Arrhythm Electrophysiol 5:499-505. 2012
    ..The overall objective of the present study was to assess the efficacy of radiofrequency catheter ablation (RFA) of VT in ARVD/C, with particular focus on newer ablation strategies, including epicardial catheter ablation...
  47. pmc The value of defibrillator far-field electrograms for ablation of idiopathic ventricular fibrillation
    Binu Philips
    Division of Cardiology Cardiac Arrhythmia, Johns Hopkins University School of Medicine, 600 N Wolfe Street, Baltimore, MD 21287, USA
    Europace 14:607-8. 2012
    ..We report a case of idiopathic ventricular fibrillation treated by catheter ablation of the monomorphic initiating premature beat. The initiating focus was identified using intacardiac defibrillator electrograms (EGMs)...
  48. pmc Evaluation of cardiac arrhythmia among athletes
    James Walker
    Department of Biology, Johns Hopkins University, Baltimore, MD 21287, USA
    Am J Med 123:1075-81. 2010
    ..This article surveys recent research and expert opinion addressing benign and pathogenic cardiac changes underlying arrhythmias in athletes...
  49. pmc Magnetic resonance-based anatomical analysis of scar-related ventricular tachycardia: implications for catheter ablation
    Hiroshi Ashikaga
    Division of Cardiology, Johns Hopkins University School of Medicine, 720 Rutland Ave, Traylor 903, Baltimore, MD 20215, USA
    Circ Res 101:939-47. 2007
    ..Magnetic resonance-based visualization of scar morphology would potentially contribute to preprocedural planning for catheter ablation of scar-related, unmappable VT...
  50. doi request reprint Profound hypotension due to slow atrioventricular nodal pathway conduction during atrial tachycardia
    Saman Nazarian
    Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
    Pacing Clin Electrophysiol 32:278-80. 2009
    ..This case illustrates the potential importance of AV timing in determining the hemodynamic effect of SVT...
  51. ncbi request reprint Computed tomography image-guided catheter ablation of a focal atrial tachycardia from the noncoronary sinus of Valsalva
    Joseph E Marine
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287 0409, USA
    Heart Rhythm 4:1582. 2007
  52. pmc Contrast-enhanced multidetector computed tomography viability imaging after myocardial infarction: characterization of myocyte death, microvascular obstruction, and chronic scar
    Albert C Lardo
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
    Circulation 113:394-404. 2006
    ....
  53. ncbi request reprint Long-term safety and efficacy of circumferential ablation with pulmonary vein isolation
    Aamir Cheema
    Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287 0409, USA
    J Cardiovasc Electrophysiol 17:1080-5. 2006
    ..Each of the two main approaches to catheter ablation of atrial fibrillation (AF, segmental and circumferential) is associated with moderate long-term efficacy...
  54. ncbi request reprint Direct visualization of coronary sinus ostium and branches with a flexible steerable fiberoptic infrared endoscope
    Saman Nazarian
    Division of Cardiology, Johns Hopkins Hospital, Baltimore, Maryland 21287, USA
    Heart Rhythm 2:844-8. 2005
    ..This study reports our experience with navigation into and within the coronary sinus in a closed-chest animal preparation, using a flexible steerable fiberoptic infrared endoscope that allows visualization through flowing blood...
  55. doi request reprint Cardiac MRI in the treatment of arrhythmias
    Stefan L Zimmerman
    Department of Radiology and Radiological Science, Johns Hopkins University, Baltimore, MD, USA
    Expert Rev Cardiovasc Ther 11:843-51. 2013
    ..There is growing evidence that delayed enhancement cardiac MRI may be useful in patients with atrial fibrillation in terms of treatment decisions and assessment of ablation efficacy. ..
  56. pmc Assessment of cardiac involvement in myotonic muscular dystrophy by T1 mapping on magnetic resonance imaging
    Evrim B Turkbey
    Radiology and Imaging Sciences, Clinical Center, and National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD 20892, USA
    Heart Rhythm 9:1691-7. 2012
    ..Patients with myotonic muscular dystrophy (DM) are at risk for atrioventricular block and left ventricular (LV) dysfunction. Noninvasive detection of diffuse myocardial fibrosis may improve disease management in this population...
  57. ncbi request reprint Impact of implantable cardioverter defibrillators on survival and recurrent hospitalization in advanced heart failure
    Saman Nazarian
    Division of Cardiology, Johns Hopkins Hospital, Baltimore, MD 21287, USA
    Am Heart J 150:955-60. 2005
    ..The aim of this study was to assess the impact of QRS duration and disease etiology on survival and rehospitalization in advanced heart failure patients with ICDs...
  58. pmc Effects of external electrical and magnetic fields on pacemakers and defibrillators: from engineering principles to clinical practice
    Roy Beinart
    Section for Cardiac Electrophysiology, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD R B, S N and Davidai Arrhythmia Center, Leviev Heart Center, Sheba Medical Center, Tel Aviv University, Tel Hashomer, Israel R B
    Circulation 128:2799-809. 2013
    ..The risk of EMI-induced events is highest within the hospital environment. Physician awareness of the possible interactions and methods to minimize them is warranted...
  59. ncbi request reprint Fatal outcome of a calcified amorphous tumor of the heart (cardiac CAT)
    Marc Lewin
    Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
    Cardiovasc Pathol 15:299-302. 2006
    ..Magnetic resonance imaging, echocardiography, angiography, and histologic descriptions of the lesion are described...
  60. pmc Migraine headache and ischemic stroke risk: an updated meta-analysis
    June T Spector
    Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
    Am J Med 123:612-24. 2010
    ..We performed an updated meta-analysis to quantitatively summarize the strength of association between migraine and ischemic stroke risk...