Affiliation: University of Utah
- Atrial fibrosis quantified using late gadolinium enhancement MRI is associated with sinus node dysfunction requiring pacemaker implantNazem Akoum
Comprehensive Arrhythmia Research and Management CARMA Center, University of Utah, Salt Lake City, Utah, USA
J Cardiovasc Electrophysiol 23:44-50. 2012..The underlying process is thought to be because of atrial fibrosis. We assessed the value of atrial fibrosis, quantified using late gadolinium enhanced-MRI (LGE-MRI), in predicting significant SND requiring pacemaker implant...
- Assessment and Impact of Cardiac Fibrosis on Atrial FibrillationNazem Akoum
Comprehensive Arrhythmia Research and Management CARMA Center, Division of Cardiovascular Medicine, University of Utah, 50 North Medical Drive, Salt Lake City, UT, 84132, USA
Curr Cardiol Rep 16:518. 2014..Following ablation, we also studied atrial scarring and demonstrated the utility of scar imaging in guiding repeat ablation procedures. ..
- Atrial fibrosis helps select the appropriate patient and strategy in catheter ablation of atrial fibrillation: a DE-MRI guided approachNazem Akoum
Comprehensive Arrhythmia Research and Management CARMA Center, University of Utah, Salt Lake City, UT 84132, USA
J Cardiovasc Electrophysiol 22:16-22. 2011..This may help select the proper candidate and strategy in catheter ablation of AF...
- Temporal left atrial lesion formation after ablation of atrial fibrillationTroy J Badger
Atrial Fibrillation Program, Division of Cardiology, University of Utah School of Medicine, Salt Lake City, Utah 84132 2400, USA
Heart Rhythm 6:161-8. 2009..Atrial fibrillation (AF) ablation uses radiofrequency (RF) energy to induce thermal damage to the left atrium (LA) in an attempt to isolate AF circuits. This injury can be seen using delayed enhancement magnetic resonance imaging (DE-MRI)...
- Left atrial strain and strain rate in patients with paroxysmal and persistent atrial fibrillation: relationship to left atrial structural remodeling detected by delayed-enhancement MRISuman S Kuppahally
Division of Cardiology, University of Utah School of Medicine, Salt Lake City, Utah, USA
Circ Cardiovasc Imaging 3:231-9. 2010..Because of limitations with current noninvasive imaging techniques, the relationship between LA structure and function is not well understood...
- Detection and quantification of left atrial structural remodeling with delayed-enhancement magnetic resonance imaging in patients with atrial fibrillationRobert S Oakes
Atrial Fibrillation Program, University of Utah School of Medicine, Salt Lake City, UT 84132 2400, USA
Circulation 119:1758-67. 2009..In this study, we report the utility of delayed-enhancement magnetic resonance imaging (DE-MRI) in detecting abnormal atrial tissue before radiofrequency ablation and in predicting procedural outcome...
- Initial experience of assessing esophageal tissue injury and recovery using delayed-enhancement MRI after atrial fibrillation ablationTroy J Badger
Comprehensive Arrhythmia and Research Management, University of Utah School of Medicine, Salt Lake City, UT 84132 2400, USA
Circ Arrhythm Electrophysiol 2:620-5. 2009..We describe a noninvasive method of using delayed-enhancement MRI to detect esophageal wall injury and subsequent recovery after atrial fibrillation ablation...
- Echocardiographic left atrial reverse remodeling after catheter ablation of atrial fibrillation is predicted by preablation delayed enhancement of left atrium by magnetic resonance imagingSuman S Kuppahally
Division of Cardiology, University of Utah, Salt Lake City, UT, USA
Am Heart J 160:877-84. 2010..This study was conducted to assess LA reverse remodeling after catheter ablation of AF in mild and moderate-severe LA SRM...
- Evaluation of the left atrial substrate in patients with lone atrial fibrillation using delayed-enhanced MRI: implications for disease progression and response to catheter ablationChristian Mahnkopf
Comprehensive Arrhythmia and Research Management CARMA Center, University of Utah School of Medicine, Salt Lake City, Utah, USA
Heart Rhythm 7:1475-81. 2010..Lone atrial fibrillation (AF) is thought to be a benign type or an early stage of the disease...
- Magnetic resonance imaging-confirmed ablative debulking of the left atrial posterior wall and septum for treatment of persistent atrial fibrillation: rationale and initial experienceNathan M Segerson
University of Utah Atrial Fibrillation Program, Department of Internal Medicine, University of Utah Hospitals and Clinics, Salt Lake City, Utah, USA
J Cardiovasc Electrophysiol 21:126-32. 2010..As evidence emerges for non-PV substrate changes in the pathogenesis of AF, more extensive ablation strategies need further study...
- Dark regions of no-reflow on late gadolinium enhancement magnetic resonance imaging result in scar formation after atrial fibrillation ablationChristopher McGann
Comprehensive Arrhythmia Research and Management Center, University of Utah, Salt Lake City, Utah 84132, USA
J Am Coll Cardiol 58:177-85. 2011..The aim of this study was to assess acute ablation injuries seen on late gadolinium enhancement (LGE) magnetic resonance imaging (MRI) immediately post-ablation (IPA) and the association with permanent scar 3 months post-ablation (3moPA)...
- Association of left atrial fibrosis detected by delayed-enhancement magnetic resonance imaging and the risk of stroke in patients with atrial fibrillationMarcos Daccarett
Comprehensive Arrhythmia and Research Management Center, University of Utah School of Medicine, Salt Lake City, Utah 84132 2400, USA
J Am Coll Cardiol 57:831-8. 2011....
- Cross-sectional imaging obtained immediately following radiofrequency atrial fibrillation ablation does not predict endoscopic evidence of esophageal injuryDarcie R Gorman
Division of Gastroenterology and Hepatology, Huntsman Cancer Center, University of Utah School of Medicine, 30N 1900E 4R118, Salt Lake City, UT 84132, USA
Dig Dis Sci 56:3453-8. 2011..We hypothesized that esophageal abnormalities seen on imaging immediately post-ablation are a poor predictor of the damage seen during EGD...
- New magnetic resonance imaging-based method for defining the extent of left atrial wall injury after the ablation of atrial fibrillationChristopher J McGann
Radiology Department, University of Utah School of Medicine, University of Utah, Salt Lake City, Utah, USA
J Am Coll Cardiol 52:1263-71. 2008..Using a 3-dimensional (3D) delayed-enhancement magnetic resonance imaging (MRI) sequence and novel processing methods, LA wall scarring is visualized at high resolution after radiofrequency ablation (RFA)...
- Atrial fibrillation and congestive heart failure: a two-way streetNazem Akoum
University of Utah, 30 North 1400 East, Room 4A100, Salt Lake City, UT 84132, USA
Curr Heart Fail Rep 4:78-83. 2007..In the current manuscript, we will review the proposed mechanisms of increased morbidity and mortality associated with AF and the current treatment options including the roles of radiofrequency ablation and pacing...
- Atrial fibrillation and heart failure: beyond the heart rateAnuj Garg
University of Utah Division of Cardiology, Section of Cardiac Electrophysiology, Utah, USA
Curr Opin Cardiol 28:332-6. 2013..They often coexist and lead to significant morbidity and mortality. Adequate management strategies for this dual epidemic continue to be the subject of many research studies...
- Value of magnetic resonance imaging in guiding atrial fibrillation managementFrederick T Han
University of Utah Health Sciences Center, Salt Lake City, Utah, USA Electronic address
Can J Cardiol 29:1194-202. 2013..Future developments promise to improve the outcomes and safety for AF and fibrotic atrial cardiomyopathy. ..
- Heart rate turbulence parameters correlate with post-premature ventricular contraction changes in muscle sympathetic activityNathan M Segerson
Department of Internal Medicine, Division of Cardiology, University of Utah, Salt Lake City, Utah 84132, USA
Heart Rhythm 4:284-9. 2007..However, the relationship between HRT and peripheral sympathetic nerve activity (SNA) after a premature ventricular contraction (PVC) remains unclear...
- The magnitude of sinus cycle length change during ventricular tachycardia is predictive of successful antitachycardia pacingJohn F MacGregor
University of Utah Health Sciences Center, Salt Lake City, Utah, USA
Pacing Clin Electrophysiol 29:1195-200. 2006..We hypothesize that the degree of sympathoexcitation, as measured by the sinus cycle length (SCL) shortening during ventricular tachycardia (VT), is a predictor of ATP success...