Second-degree atrioventricular block revisitedS Serge Barold
Florida Heart Rhythm Institute, Tampa, FL, USA
Herzschrittmacherther Elektrophysiol 23:296-304. 2012
..All correctly defined type II blocks are infranodal. Infranodal block presenting with either type I or II manifestations requires pacing regardless of QRS duration or symptoms...
Paradoxical atrial undersensing by a dual chamber pacemaker during atrial fibrillationS Serge Barold
Florida Heart Rhythm Institute, Tampa, Florida, USA
Cardiol J 19:207-9. 2012
..This unusual response should be differentiated from the recently documented lock-in behavior of pacemakers delivering managed ventricular pacing...
Functional atrial undersensing associated with switching to a tracking mode of pacingS Serge Barold
Florida Heart Rhythm Institute, Tampa, Florida, USA
Pacing Clin Electrophysiol 35:1188-93. 2012
..The observed functional atrial undersensing is a normal manifestation of device function and must not be misinterpreted as a true atrial undersensing problem...
Conventional and biventricular pacing in patients with first-degree atrioventricular blockS Serge Barold
Florida Heart Rhythm Institute, Tampa, FL, USA
Europace 14:1414-9. 2012
....
P-wave locking in the postventricular atrial refractory period of cardiac resynchronization devices. Management with the Biotronik systemS S Barold
Florida Heart Rhythm Institute, Tampa General Circle, 33606, Tampa, FL, USA
Herzschrittmacherther Elektrophysiol 23:116-20. 2012
..A ventricular sensed event occurring within the AV control interval does not start a PVARP so that P wave locking cannot occur when the AV conduction time is shorter than the AV control interval...
Unusual cause of desynchronization in a cardiac resynchronization deviceS S Barold
Florida Heart Rhythm Institute, Tampa General Circle, 33606, Tampa, FL, USA
Herzschrittmacherther Elektrophysiol 23:135-40. 2012
..With these devices, it is important to program the LV maximum trigger interval (essentially equivalent to a LV upper interval) to a value equal or faster than the sensor-driven upper rate...
Sensing of 2 atrial rhythms by a pacemaker in a transplanted heartS Serge Barold
Florida Heart Rhythm Institute, Tampa, Florida, USA
J Electrocardiol 45:426-7. 2012
..The atrial lead must be implanted in the donor atrium: a double atrial electrogram requires a different atrial site unless programmable atrial sensitivity can establish preferential sensing of donor P waves...
Pacemaker repetitive nonreentrant ventriculoatrial synchrony. Why did automatic mode switching occur?S Serge Barold
Florida Heart Rhythm Institute, Tampa, FL, USA
J Electrocardiol 45:420-5. 2012
..The explanation is presented in the form of questions and answers to facilitate the understanding of pacemaker function and complex timing cycles...
Atrial lead malfunction presenting as new onset pacemaker-mediated tachycardiaS Serge Barold
The Florida Heart Rhythm Institute, Tampa, FL, USA
Europace 14:1060-1. 2012
..Oversensing of atrial false signals from a defective lead shortened the PVARP with consequent sensing of retrograde conduction...
Pacemaker-mediated tachycardia initiated by an atrioventricular search algorithm to minimize right ventricular pacingS Serge Barold
Florida Heart Rhythm Institute, Tampa, FL, USA
J Electrocardiol 45:336-9. 2012
....
Significance of missing telemetered markers in implanted cardioverter-defibrillatorsS Serge Barold
Florida Heart Rhythm Institute, Tampa, Florida, USA
Pacing Clin Electrophysiol 35:409-15. 2012
..We report three patients with St Jude ICDs (St. Jude Medical, Sylmar, CA, USA) where some aspect of the marker channel was missing...
Using devices with a variable postventricular atrial refractory period for cardiac resynchronizationS S Barold
Florida Heart Rhythm Institute, Tampa General Circle, 33606, Tampa, FL, USA
Herzschrittmacherther Elektrophysiol 23:52-5. 2012
..Auto-PVARP makes little sense (especially in the presence of first-degree AV block) in CRT patients considering that PMT is rare in this situation. In CRT patients, one should program a short and fixed PVARP of ≤ 250 ms...
Escape-echo bigeminyS Serge Barold
Florida Heart Rhythm Institute, Tampa, FL, USA
J Electrocardiol 45:167-9. 2012
..The clinical significance of escape-echo bigeminy appears similar to that of classic escape-capture bigeminy...
Reappraisal of the traditional Wenckebach phenomenon with a modified ladder diagramS Serge Barold
Florida Heart Rhythm Institute, Tampa, FL, USA
Ann Noninvasive Electrocardiol 17:3-7. 2012
..The modified Wenckebach diagram should help students understand the mysterious clustering of QRS complexes or "paradoxical" increase of the ventricular rate that occurs during a Wenckebach sequence...
Diagnosis of inferior myocardial infarction based on the paced QRS complexS Serge Barold
Division of Cardiology, University of South Florida College of Medicine, Tampa General Hospital, Tampa, FL, USA
J Electrocardiol 40:161-3. 2007
Right ventricular outflow tract pacing: not ready for prime-timeS Serge Barold
Tampa General Hospital and the University of South Florida College of Medicine, Tampa, Florida 33615, USA
J Interv Card Electrophysiol 13:39-46. 2005
Mysterious loss of resynchronization during biventricular pacingS Serge Barold
Tampa General Hospital and the University of South Florida College of Medicine, 5806 Mariner's Watch Drive, Tampa, FL 33615, USA
Pacing Clin Electrophysiol 28:571-2. 2005
Pulsus alternans caused by 2:1 left bundle branch blockS Serge Barold
Division of Cardiology, University of South Florida College of Medicine and Tampa General Hospital, USA
J Interv Card Electrophysiol 12:221-2. 2005
..The observations documented the profound depressant hemodynamic effect of complete left bundle branch block in the setting of minimal systolic left ventricular function...
Characterization of the 16 blanking periods of the Medtronic GEM DR dual chamber defibrillatorsS S Barold
Electrophysiology Institute, Broward General Hospital and Medtronic Inc, Ft Lauderdale, Florida, USA
J Interv Card Electrophysiol 5:319-25. 2001
..Our findings complement the incomplete or unclear specifications published by the manufacturer. Accurate knowledge of blanking periods is essential for the interpretation of device function...
Electrocardiographic follow-up of biventricular pacemakersS Serge Barold
Cardiology Division, University of South Florida College of Medicine and Tampa General Hospital, Tampa, FL, USA
Ann Noninvasive Electrocardiol 10:231-55. 2005
..Algorithms are available to restore resynchronization by automatic temporary abbreviation of the postventricular atrial refractory period...
Phantom crosstalkS Serge Barold
Tampa General Hospital and the University of South Florida College of Medicine, 5806 Mariner's Watch Drive, Tampa, FL 33615, USA
Pacing Clin Electrophysiol 28:334-5. 2005
Minimizing right ventricular pacingS Serge Barold
University of South Florida College of Medicine and Tampa General Hospital, USA
Am J Cardiol 95:966-9. 2005
Multisite cardiac pacing. A code proposal revisitedS Serge Barold
University of South Florida College of Medicine, Tampa, Florida, USA
Acta Cardiol 60:13-4. 2005
Upper rate response of biventricular pacing devicesS Serge Barold
Division of Cardiology, University of South Florida College of Medicine and Tampa General Hospital, Tampa, FL 33615, USA
J Interv Card Electrophysiol 12:129-36. 2005
Far-field R wave sensing causing prolongation of the atrial escape interval of DDD pacemakers with atrial-based lower rate timingS Serge Barold
Tampa General Hospital, Tampa, Florida, USA
Pacing Clin Electrophysiol 26:2188-91. 2003
..This manifestation of far-field sensing should not be interpreted as malfunction of dual chamber pacemakers with atrial-based lower rate timing...
Ventricular rate stabilization algorithm of ICD causing dual chamber pacing during ventricular tachycardiaS Serge Barold
Tampa General Hospital, Tampa, FL 33615, USA
J Interv Card Electrophysiol 9:397-400. 2003
..This response occurs when there is an appropriate relationship between the timing cycles of the ICD and a relatively slow VT...
Mode switching of dual chamber pacemakers from activation of a blanked flutter search algorithm by a single atrial eventS Serge Barold
Tampa General Hospital and the University of South Florida College of Medicine, 5806 Mariner s Watch Drive, Tampa, FL 33615, USA
Pacing Clin Electrophysiol 28:917-20. 2005
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Alternating preventricular and postventricular atrial far-field sensing by a dual chamber cardioverter defibrillatorS Serge Barold
Division of Cardiology, University of South Florida College of Medicine and Tampa General Hospital, Tampa, Florida, USA
Pacing Clin Electrophysiol 28:1320-1. 2005
Harmful effects of long-term right ventricular pacingS Serge Barold
University of South Florida College of Medicine and Tampa General Hospital, Tampa, Florida, USA
Acta Cardiol 61:103-10. 2006
Usefulness of the 12-lead electrocardiogram in the follow-up of patients with cardiac resynchronization devices. Part IS Serge Barold
Florida Heart Rhythm Institute, Tampa, FL, USA
Cardiol J 18:476-86. 2011
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Echocardiographic optimization of the atrioventricular and interventricular intervals during cardiac resynchronizationS Serge Barold
Cardiology Division, University of South Florida College of Medicine and Tampa General Hospital, Tampa, FL, USA
Europace 10:iii88-95. 2008
..VV timing is generally programmed using the aortic velocity-time integral, and long-term variations of the optimal value necessitate periodic re-evaluation...
Pacemaker tachycardia: is it pacemaker-mediated tachycardia or sinus tachycardia?S Serge Barold
Tampa General Hospital, University of South Florida College of Medicine, Tampa, Florida, USA
Pacing Clin Electrophysiol 30:256-7. 2007
First-degree atrioventricular block. Clinical manifestations, indications for pacing, pacemaker management & consequences during cardiac resynchronizationS Serge Barold
Cardiology Division, University of South Florida and Tampa General Hospital, Tampa, FL 33615, USA
J Interv Card Electrophysiol 17:139-52. 2006
..The resultant hemodynamic response may be superior because the detrimental effects of right ventricular stimulation (required in the setting of a longer PR interval) are avoided...
Complex manifestations of an automatic mode switching algorithmS Serge Barold
Division of Cardiology, University of South Florida College of Medicine and Tampa General Hospital, Tampa, FL 33615, USA
Pacing Clin Electrophysiol 30:112-4. 2007
ICD shock triggered by atrial bigeminyS Serge Barold
Division of Cardiology, University of South Florida College of Medicine and Tampa General Hospital, Tampa, Florida 33606, USA
Pacing Clin Electrophysiol 29:991-5. 2006
Diagnostic value of the 12-lead electrocardiogram during conventional and biventricular pacing for cardiac resynchronizationS Serge Barold
Division of Cardiology, University of South Florida College of Medicine and Tampa General Hospital, Tampa, FL 33615, USA
Cardiol Clin 24:471-90, x. 2006
..Such an arrangement would improve the care of pacemaker patients...
Electrocardiographic diagnosis of myocardial infarction and ischemia during cardiac pacingS Serge Barold
Division of Cardiology, University of South Florida College of Medicine and Tampa General Hospital, Tampa, FL, USA
Cardiol Clin 24:387-99, ix. 2006
..A recent investigation suggests that T wave abnormalities from ischemia can be differentiated from those caused by cardiac memory related to pacing...
Electrocardiographic diagnosis of myocardial infarction during left bundle branch blockS Serge Barold
Division of Cardiology, University of South Florida College of Medicine and Tampa General Hospital, Tampa, FL 33606, USA
Cardiol Clin 24:377-85, viii. 2006
..Criteria for old MI (based on QRS changes) have not been reevaluated for almost 20 years and continue to exhibit low sensitivity, but high specificity...
Electrocardiographic diagnosis of myocardial infarction and ischemia during right ventricular pacingS Serge Barold
Division of Cardiology, University of South Florida College of Medicine and Tampa General Hospital, Tampa, FL 33615, USA
J Electrocardiol 40:164-7. 2007
Seymour FurmanS Serge Barold
Division of Cardiology, University of South Florida, College of Medicine and Tampa General Hospital, USA
Pacing Clin Electrophysiol 29:451-2. 2006
Usefulness of the 12-lead electrocardiogram in the follow-up of patients with cardiac resynchronization devices. Part IIS Serge Barold
Florida Heart Rhythm Institute, Tampa, Florida, USA
Cardiol J 18:610-24. 2011
..Programming the V-V interval (LV before RV) in the setting of RV anodal stimulation cancels the V-V timing to zero...
Alternating duration of ventricular paced cycles during automatic mode switching of a DDDR pacemakerS Serge Barold
Florida Cardiovascular Institute and Tampa General Hospital, Tampa, Florida, USA
J Interv Card Electrophysiol 7:185-7. 2002
..Such unusual behavior must not be interpreted as pacemaker malfunction...
Pacemaker repetitive nonreentrant ventriculoatrial synchronous rhythm. A reviewS S Barold
The Electrophysiology Institute, Broward General Hospital, Ft Lauderdale, FL 33496, USA
J Interv Card Electrophysiol 5:45-58. 2001
..Management requires modification of the programmed settings of the pacemaker and utilization of certain algorithms designed for other functions but nevertheless effective in this situation...
Termination of pacemaker endless loop tachycardia by an atrial extrasystoleS S Barold
Genesee Hospital and the University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
Pacing Clin Electrophysiol 24:250-1. 2001
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2:1 Atrioventricular block: order from chaosS S Barold
Electrophysiology Institute, Broward General Hospital, Ft Lauderdale, FL, USA
Am J Emerg Med 19:214-7. 2001
..Administration of atropine in patients with His-Purkinje disease may increase the degree of AV block...
Paradoxical induction of cross-talk in a dual chamber pacemaker by increasing the ventricular outputS S Barold
Genesee Hospital, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
Pacing Clin Electrophysiol 24:906-7. 2001
..Oversensing by the ventricular channel was probably due to the detection of a relatively large summation signal consisting of the afterpotential and the superimposed activity from the atrial stimulus...
Second-degree atrioventricular block: a reappraisalS S Barold
Electrophysiology Institute, Broward General Hospital, Ft Lauderdale, Fla, USA
Mayo Clin Proc 76:44-57. 2001
..Adherence to the correct definitions provides a logical and simple framework for clinical evaluation...
Hyperkalemia induced pacemaker far-field endless loop tachycardiaS S Barold
Genesee Hospital, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
Pacing Clin Electrophysiol 24:1425-6. 2001
..Ventricular activation was so prolonged that the atrial channel sensed the far-field ventricular deflection within the atrial electrogram beyond the 300 ms postventricular atrial refractory period...
Cross-ventricular endless loop tachycardia during biventricular pacingS S Barold
Florida Cardiovascular Institute and Tampa General Hospital, USA
Pacing Clin Electrophysiol 24:1821-3. 2001
..quot; This "cross-ventricular" endless loop tachycardia is a reentrant pacemaker tachycardia like classic endless loop tachycardia and can be prevented by appropriate programming of the pacemaker...
Far-field P-wave sensing by the right ventricular lead of conventional dual chamber pacemakersS Serge Barold
Florida Cardiovascular Institute and Tampa General Hospital, Tampa, FL, USA
J Interv Card Electrophysiol 6:77-80. 2002
..One case was caused by displacement of a bipolar ventricular lead towards the right ventricular inflow tract. The other case occurred only in relation to an atrial extrasystole in the absence of ventricular lead displacement...
Advances in cardiac pacing. New indications and technologyS Serge Barold
Tampa General Hospital, Tampa, Florida, USA
Acta Cardiol 58:101-17. 2003
Willem Einthoven and the birth of clinical electrocardiography a hundred years agoS Serge Barold
Tampa General Hospital, Tampa, Florida, USA
Card Electrophysiol Rev 7:99-104. 2003
..He was awarded the Nobel Prize in 1924 (2 years after Waller's death) in physiology and medicine, "for the discovery of the mechanism of the electrocardiogram."..
Case report: type I second-degree AV block masquerading as Type II blockS S Barold
Genesee Hospital and University of Rochester School of Medicine and Dentistry, Rochester NY, USA
J Interv Card Electrophysiol 4:599-603. 2000
..The electrocardiograms illustrate the importance of deductive reasoning and the clinical context in the diagnostic evaluation of perplexing forms of second-degree AV block...
Shortening of the sensed AV delay of a dual chamber pacemaker during normal sinus rhythmS Serge Barold
Tampa General Hospital, 5806 Mariner s Watch Drive, Tampa, FL 33615, USA
J Interv Card Electrophysiol 9:29-34. 2003
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Non-paroxysmal junctional tachycardia with type I exit blockS S Barold
Heart 88:288. 2002
Diagnosis of myocardial ischemia during ventricular pacingS S Barold
Genesee Hospital, Rochester, New York, USA
Pacing Clin Electrophysiol 23:1060-1. 2000
..This report shows that the same sign may occur transiently during myocardial ischemia and also serve as a diagnostic marker...
Wenckebach upper rate response in single chamber pacemakerS S Barold
Genesee Hospital, Rochester, New York, USA
Pacing Clin Electrophysiol 23:1087-8. 2000
..This behavior occurred only when the upper rate interval was longer than the pacemaker refractory period. In a single chamber device this response may simulate pacemaker malfunction...
Eccentricities of dual chamber implantable pacemakersS S Barold
Genesee Hospital, Rochester, New York, USA
Pacing Clin Electrophysiol 23:1290-4. 2000
..Knowledge of these eccentricities should facilitate the interpretation of complex pacemakers responses to interference...
Demonstration of a His-Purkinje fatigue phenomenon with programmed stimulation of the right ventricular outflow tractS S Barold
The Electrophysiology Institute, Broward General Hospital, Fort Lauderdale, Florida, USA
J Interv Card Electrophysiol 4:489-91. 2000
..The observations were consistent with the fatigue phenomenon of the His-Purkinje system and illustrate the importance of an appropriate stimulation protocol in the electrophysiological evaluation of syncope...
Paradoxical AV delay shortening of a pacemakerS S Barold
Electrophysiology Institute, Broward General Hospital, Fort Lauderdale, Florida, USA
Pacing Clin Electrophysiol 23:1527-31. 2000
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Abrupt and sustained shortening of the AV delay of a DDDR pacemaker during stable sinus rhythmS Serge Barold
Florida Cardiovascular Institute and Tampa General Hospital, Tampa, FL, USA
J Electrocardiol 35:139-41. 2002
..This behavior is caused by a pacemaker Wenckebach upper rate response related to the slow prevailing upper rate at rest provided by sensor input to the SmarTracking function of the pulse generator...
Case report: complex arrhythmia induced by noncompetitive atrial pacing algorithm of DDDR pacemakerS S Barold
Florida Cardiovascular Institute, Tampa, FL, USA
J Interv Card Electrophysiol 5:431-4. 2001
..This situation produced a repetitive nonreentrant VAl synchronous rhythm in the setting of retrograde VA conduction...
Right ventricular outflow tract placement of defibrillation leads: five year experienceMichael C Giudici
Division of Cardiology, Genesis Heart Institute, Davenport, Iowa 52803, USA
Pacing Clin Electrophysiol 27:443-6. 2004
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Coexistence of intracardiac atrial flutter and extracardiac fibrillationBengt Herweg
Arrhythmia Service and Division of Cardiology, Tampa General Hospital and University of South Florida, Tampa, Florida, USA
J Interv Card Electrophysiol 13:71-2. 2005
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Anodal capture with second-generation biventricular cardioverter-defibrillatorBengt Herweg
USF Cardiology, Tampa General Hospital, Tamp, Tampa, Florida 33606, USA
Acta Cardiol 58:435-6. 2003
Esophageal contour changes during cryoablation of atrial fibrillationBengt Herweg
Division of Cardiology, Tampa General Hospital and University of South Florida, Tampa, FL 33606, USA
Pacing Clin Electrophysiol 32:711-6. 2009
..We have observed contour changes of the barium-filled esophagus during atrial fibrillation (AF) ablation with cryo-energy delivered in direct proximity to the esophagus...
Transvenous left atrial and left ventricular pacing in Ebstein's anomaly with severe interatrial conduction blockS Garrigue
Hopital Cardiologique du Haut Leveque, University of Bordeaux, Bordeaux Pessac, France
Pacing Clin Electrophysiol 24:1032-5. 2001
..This case illustrates the promising possibility to circumvent the interatrial conduction block with single left atrial pacing instead of biatrial pacing which was not suitable here...
Is there a synergic effect of propafenone associated with atrial overdrive pacing for atrial arrhythmia prevention? A randomised crossover studyS Garrigue
Hopital Cardiologique du Haut Leveque, University of Bordeaux, 19 avenue de Magellan, 33600 Pessac, France
Heart 83:172-7. 2000
..To assess the effect of adding propafenone to atrial overdrive for the prevention of atrial arrhythmia episodes in patients with DDD pacemakers...
Significance of syncope in patients with Alzheimer's disease treated with cholinesterase inhibitorsP Bordier
Hopital Cardiologique du Haut Leveque, University of Bordeaux, Pessac, France
Europace 5:429-31. 2003
..Pacemaker implantation seemed justified rather than donepezil cessation. More over, it permitted an increase in donepezil dosage...
Cardiac resynchronization therapy in patients with end-stage inotrope-dependent class IV heart failureBengt Herweg
Division of Cardiology, Tampa General Hospital, University of South Florida College of Medicine, Tampa, Florida, USA
Am J Cardiol 100:90-3. 2007
..In conclusion, patients with end-stage inotrope-dependent NYHA class IV HF and LV dyssynchrony may respond favorably to CRT with long-term clinical benefit and improved LV function...
A case of pacemaker and pacemaker-like syndromeAmir Kashani
Rochester General Hospital, Rochester, NY 14621, USA
J Interv Card Electrophysiol 9:361-4. 2003
..Surprisingly, the occurrence of the pacemaker-like syndrome during junctional rhythm in patients with normal left ventricular function has rarely been described...
AV junctional ablation allowing more effective delivery of cardiac resynchronization therapy in patients with intra- and interatrial conduction delayBengt Herweg
Arrhythmia Service and Division of Cardiology, Tampa General Hospital, Tampa, Florida, USA
Pacing Clin Electrophysiol 31:685-90. 2008
..In both patients AV junctional ablation and echocardiography-guided device optimization significantly improved heart failure...
Influence of native conduction status on clinical results with right ventricular outflow tract pacingMichael C Giudici
Division of Cardiology, Genesis Heart Institute, Davenport, Iowa 52803, USA
Am J Cardiol 91:240-2. 2003
Ablation of left ventricular tachycardia via transeptal approach and crossing of a mechanical mitral valve prosthesisBengt Herweg
Division of Cardiology, Florida Heart Rhythm Institute and Tampa General Hospital, Tampa, Florida 33606, USA
Pacing Clin Electrophysiol 33:900-3. 2010
..The patient has since been free of implantable cardioverter defibrillator shocks for 2 months since the second procedure...
Ventricular asystole during atrial antitachycardia pacing by implanted cardioverter-defibrillatorBengt Herweg
Tampa General Hospital and the University of South Florida College of Medicine, Tampa, Florida 33606, USA
Pacing Clin Electrophysiol 28:432-3. 2005
Aortic perforation by active-fixation atrial pacing leadAmir Kashani
St John s Mercy Medical Center, St Louis, Missouri, USA
Pacing Clin Electrophysiol 27:417-8. 2004
..Perforation of the aorta should be part of the differential diagnosis of cardiac tamponade after pacemaker implantation...
Einthoven's first electrocardiogram 100 years agoS Serge Barold
Tampa General Hospital, Tampa, Florida, USA
Pacing Clin Electrophysiol 25:1792-3. 2002
What is cardiac resynchronization therapy?S S Barold
Broward General Hospital, Fort Lauderdale, Florida, USA
Am J Med 111:224-32. 2001
..The high incidence of sudden death among these patients has encouraged ongoing clinical trials to evaluate the benefit of a system that combines biventricular pacing and cardioversion-defibrillation into a single implantable device...
Coronary vein angioplasty with noncompliant balloon for resistant coronary vein stenosis during left ventricular lead implantationKetul Chauhan
Department of Cardiology, University of South Florida College of Medicine, JA Haley VA Hospital, Tampa, Florida, USA
Pacing Clin Electrophysiol 31:251-2. 2008
..Venoplasty with noncompliant balloon should be considered for resistant coronary vein stenosis encountered during CRT device implantation...
Simple access to the coronary venous system for left ventricular pacingDany E Sayad
Florida Cardiovascular Institute, Tampa, Florida, USA
Pacing Clin Electrophysiol 26:1856-8. 2003
..Coronary sinus cannulation was achieved in all 15 patients with a mean fluoroscopy time of 3.34 +/- 1.9 minutes. Subsequent implantation of a biventricular pacemaker was successful and free of complications in all the 15 patients...
Latency during left ventricular pacing from the lateral cardiac veins: a cause of ineffectual biventricular pacingBengt Herweg
Arrhythmia Service and Division of Cardiology, Tampa General Hospital and University of South Florida, Tampa, Florida 33606, USA
Pacing Clin Electrophysiol 29:574-81. 2006
..Hemodynamic parameters improved immediately after advancing LV stimulation (in one patient) or pacing the LV only (in two patients) coupled with dramatic improvement of heart failure symptoms...
Left-sided implantation of a biventricular implantable cardioverter-defibrillator in dextrocardiaKalpesh H Solanki
James A. Haley VA Hospital, Tampa General Hospital, and the University of South Florida College of Medicine, Tampa, Florida, USA
Heart Rhythm 4:247. 2007
Mechanical esophageal deflection during ablation of atrial fibrillationBengt Herweg
Arrhythmia Service and Division of Cardiology, Tampa General Hospital and University of South Florida, Tampa, Florida 33606, USA
Pacing Clin Electrophysiol 29:957-61. 2006
..This technique was successfully employed in three patients where critical sites of the posterior left atrial wall were very close to the esophagus...
Atrioventricular block revisitedS Serge Barold
University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
Compr Ther 28:74-8. 2002
..Type II, second-degree AV block is infranodal, whereas 2/3 of Type I with BBB are infranodal, 2:1 AV block is neither Type I nor II block. Infranodal blocks require pacing regardless of symptoms...
Association of noncompaction of left ventricular myocardium with Ebstein's anomalyArzu Ilercil
Department of Medicine, Division of Cardiovascular Disease, University of South Florida, Tampa, Florida 33606, USA
Echocardiography 23:432-3. 2006
Abolition of diaphragmatic pacing by nonsurgical retraction of a left ventricular leadBengt Herweg
Arrhythmia Service, Florida Heart Rhythm Institute, Tampa, Florida 33606, USA
Pacing Clin Electrophysiol 32:1105-6. 2009
..At the 3-month follow-up, the absence of diaphragmatic stimulation was associated with a satisfactory LV pacing threshold and dramatic clinical improvement from effectual biventricular pacing...
Norman J. "Jeff" Holter-"Father" of ambulatory ECG monitoringS Serge Barold
Division of Cardiology, University of South Florida College of Medicine and Tampa General Hospital, Tampa, FL 33615, USA
J Interv Card Electrophysiol 14:117-8. 2005
Pacemaker and implantable cardioverter defibrillator implantation without reversal of warfarin therapyMichael C Giudici
Division of Cardiology, Genesis Medical Center, Davenport, Iowa 52803, USA
Pacing Clin Electrophysiol 27:358-60. 2004
..6 +/- 1.0, range 1.5-7.5). The complication rate in the anticoagulated group was similar to those in patients with a normal INR. Routine normalization of coagulation factors prior to pacemaker/ICD placement may not be necessary...
Treatment of pacemaker induced severe mitral regurgitation with biventricular pacing in two patients with a normal left ventricular ejection fractionJames M Irwin
St Joseph s Hospital, Tampa, Florida, USA
Pacing Clin Electrophysiol 26:2333-5. 2003
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The DVI mode of cardiac pacing: a second coming?S Serge Barold
Am J Cardiol 90:521-3. 2002
Double counting of the ventricular electrogram in biventricular pacemakers and ICDsS Serge Barold
Pacing Clin Electrophysiol 26:1645-8. 2003
Underutilization of the DDIR mode in ICD patientsS Serge Barold
Pacing Clin Electrophysiol 26:803-4. 2003
Acquired atrioventricular block: the 2002 ACC/AHA/NASPE guidelines for pacemaker implantation should be revisedS Serge Barold
Pacing Clin Electrophysiol 26:531-3. 2003
Double jeopardy in an implantable cardioverter defibrillator patientStephane Garrigue
Hopital Cardiologique du Haut Leveque, Avenue de Magellan, Bordeaux Pessac 33604, France
J Cardiovasc Electrophysiol 14:784. 2003
Automatic mode switching of implantable pacemakers: II. Clinical performance of current algorithms and their programmingChu Pak Lau
Department of Medicine, Queen Mary Hospital, and the Institute of Cardiovascular Science and Medicine, Faculty of Medicine, University of Hong Kong, Hong Kong
Pacing Clin Electrophysiol 25:1094-113. 2002
..Appropriate programming of atrial sensitivity, and the avoidance of ventriculoatrial cross-talk are essential for optimal AMS performance...
Cardiac resynchronization therapy: Part 2--issues during and after device implantation and unresolved questionsJeroen J Bax
Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
J Am Coll Cardiol 46:2168-82. 2005
..Finally, open questions concerning when to combine CRT with implantable cardioverter-defibrillator therapy and the cost-effectiveness of CRT are discussed...
Failure of atrial flutter detection by a pacemaker with a dedicated atrial flutter detection algorithmCarsten W Israel
J W Goethe University Hospital, Department of Medicine, Frankfurt, Germany
Pacing Clin Electrophysiol 25:1274-7. 2002
..This observation underscores the need for further refinement of pacemaker algorithms for the detection of atrial tachyarrhythmias...
Automatic mode switching of implantable pacemakers: I. Principles of instrumentation, clinical, and hemodynamic considerationsChu Pak Lau
Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong
Pacing Clin Electrophysiol 25:967-83. 2002
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Two-to-one bundle branch block during atrioventricular nodal reentrant tachycardia: what is the mechanism?Helen S Barold
Division of Internal Medicine and Cardiology, National Naval Medical Center, Bethesda, Maryland, USA
Heart Rhythm 4:371-3. 2007
Implantation of left ventricular leads using a telescopic catheter systemFrancesco Zanon
Division of Cardiology, Rovigo General Hospital, Rovigo, Italy
Pacing Clin Electrophysiol 29:1266-72. 2006
..Technologic advances in catheter design may facilitate CS cannulation and LV lead placement...
A real-time three-dimensional echocardiographic validation of an intracardiac electrogram-based method for optimizing cardiac resynchronization therapyMaria Cristina Porciani
Clinica Medica Careggi, Florence, Italy
Pacing Clin Electrophysiol 31:56-63. 2008
..We evaluated the effectiveness of this method in improving left ventricular (LV) asynchrony and performance using real-time 3D echocardiography (RT3DE)...