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Variability in Postpacing Intervals Predicts Global Ventricular Activation Pattern during TachycardiaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: Our data suggest that the global ventricular activation pattern during VT can be rapidly and accurately defined by assessing the PPIV. This technique allows for a rapid confirmation of the tachycardia activation and significantly facilitates mapping and ablation. (PACE 2009; 1[ndash]6) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 19, 2009 Category: Cardiology Authors: ILYAS K. COLOMBOWALA, ALI MASSUMI, ABDI RASEKH, MOHAMMAD SAEED, JIE CHENG, BITA FAKHRI, MOSSAAB SHURAIH, MEHDI RAZAVI Source Type: journals

Mapping and Isolation of the Pulmonary Veins Using the PVAC CatheterEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions:(1) PVAC-guided ablation (i.e., mapping and ablation with a single catheter) results in isolation of all PVs in 73% of the patients. (2) An additional circular mapping catheter is required to increase complete isolation rate to 93% of the patients. (3) Given the esophageal T° rise in almost 50% of patients, safety precautions are needed. (PACE 2009; 1[ndash]11) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 18, 2009 Category: Cardiology Authors: MATTIAS DUYTSCHAEVER, WIM ANNE, GIORGI PAPIASHVILI, YVES VANDEKERCKHOVE, RENE TAVERNIER Source Type: journals

Determining Arrhythmia Mechanism: Still Critical or Now Obsolete?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 18, 2009 Category: Cardiology Authors: FRANK C. CHEN, SAMUEL J. ASIRVATHAM Source Type: journals

The Relationship between Pacing Site and Induction or Termination of Sustained Monomorphic Ventricular Tachycardia by Antitachycardia PacingEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:ATP delivered from a LCV lead offers no efficacy advantage over pacing from the RVA. (PACE 2009; 1[ndash]6) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 18, 2009 Category: Cardiology Authors: RAYMOND YEE, ULRIKA BIRGERSDOTTER-GREEN, PAUL BELK, TROY JACKSON, JILL CHRISTENSEN, MARK S. WATHEN Source Type: journals

Psychopathology in Patients with ICDs over Time: Results of a Prospective StudyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions:Patients receiving ICDs have significant rates of baseline psychopathology after implantation. However, psychological assessment scores tend to improve with time. ICD shocks do not appear to significantly impact psychological state. These results suggest the importance of close screening and referral for possible psychopathology in patients receiving ICDs, especially in the peri-implant period. (PACE 2009; 1[ndash]11) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 18, 2009 Category: Cardiology Authors: SURAJ KAPA, DEBRA ROTONDI-TREVISAN, ZANA MARIANO, THERESA AVES, JANE IRVINE, PAUL DORIAN, DAVID L. HAYES Source Type: journals

Is Surface ECG a Useful Surrogate for Subcutaneous ECG?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: Surface ECGs are adequate surrogates for subcutaneous ECGs in situations free from motion artifacts but not in situations involving movement of the device, surface electrodes, or recording equipment. During artifact-inducing maneuvers, subcutaneous ECGs are of higher quality and less susceptible to artifacts than surface ECGs. (PACE 2009; 1[ndash]11) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 18, 2009 Category: Cardiology Authors: CARISSA L. BELLARDINE BLACK, KURT STROMBERG, GEORGETTE PLEMPER VAN BALEN, RAJA N. GHANEM, ROBERT W. BREEDVELD, ROBERT G. TIELEMAN Source Type: journals

Pseudo-Ventricular Over and Under-Sensing during an Episode of Double Tachycardia. What is the Mechanism?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 10, 2009 Category: Cardiology Authors: DARDO E. FERRARA, MIKHAEL F. EL-CHAMI Source Type: journals

Heart Rate Recovery and Chronotropic Incompetence in Patients with Subclinical HypothyroidismEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:The results of the present study demonstrated that SCH can cause impaired cardiovascular autonomic function and attenuated HR response to exercise. (PACE 2009; 1[ndash]4) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 9, 2009 Category: Cardiology Authors: MUSTAFA AKCAKOYUN, YUNUS EMIROGLU, SELCUK PALA, RAMAZAN KARGIN, GAMZE BABUR GULER, OZLEM ESEN, HEKIM KARAPINAR, BIROL SAY, ALI METIN ESEN Source Type: journals

Identification, Isolation and Characterization of HCN4-Positive Pacemaking Cells Derived from Murine Embryonic Stem Cells during Cardiac DifferentiationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: By the approach of using stable transfectant of HCN4p-EGFP gene, the identification, isolation, and characterization of ES cell-derived pacemaking cells could be carried out. (PACE 2009; 1[ndash]14) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 6, 2009 Category: Cardiology Authors: KUMI MORIKAWA, UDIN BAHRUDIN, JUNICHIRO MIAKE, OSAMU IGAWA, YASUTAKA KURATA, YUJI NAKAYAMA, YASUAKI SHIRAYOSHI, ICHIRO HISATOME Source Type: journals

Slow Pathway Radiofrequency Ablation in Patients with AVNRT: Junctional Rhythm is Less Frequent during Magnetic Navigation Ablation Than with the Conventional TechniqueEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions:Magnetic remote catheter ablation of AVNRT is effective and is associated with less JB than the manual conventional technique. Therefore, JB may not be considered as a mandatory indicator for successful AVNRT ablation with MN system. (PACE 2009; 1[ndash]5) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 5, 2009 Category: Cardiology Authors: PHILIPPE RICARD, DECEBAL GABRIEL LATCU, KHELIL YAÏCI, NAIMA ZARQANE, NADIR SAOUDI Source Type: journals

Autonomic Function during Closed Loop Stimulation and Fixed Rate Pacing: Heart Rate Variability Analysis from 24-Hour Holter RecordingsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Discussion: The two main findings of this study were: in all the patients, CLS seems to mimic short-term physiological HRV, although the variability (total power) was lower than that relative to the spontaneous beats; the HRV of the spontaneous beats had an higher LF/HF when the pacemaker was programmed as DDD respect to CLS, consistent with a shift toward sympathetic predominance. (PACE 2009; 1[ndash]6) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 5, 2009 Category: Cardiology Authors: RAFFAELE QUAGLIONE, GIOVANNI CALCAGNINI, FEDERICA CENSI, FABRIZIO PICCIRILLI, LUCA IANNUCCI, MARCO RAVEGGI, GIANLUCA BIANCALANA, PIETRO BARTOLINI Source Type: journals

The Effect of Bipole Tip-to-Ring Distance in Atrial Electrodes upon Atrial Tachyarrhythmia Sensing Capability in Modern Dual-Chamber PacemakersEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Introduction:Accurate atrial arrhythmia discrimination is important for dual chamber pacemakers and defibrillators. The aim was to assess the accuracy of atrial arrhythmia recording using modern devices and relate this to atrial tip-to-ring (TTR) distance. Methods:One hundred eighty-two patients (72 ± 9 years, 55% male) with paroxysmal atrial fibrillation were enrolled and were included in the study if they had an atrial fibrillation (AF) burden of 1[ndash]50% during a monitoring phase. Seventy-nine patients fulfilled these criteria and were followed for at least 5 months. Electrodes were classified as having short ( (Sou...
Source: Pacing and Clinical Electrophysiology : PACE - November 4, 2009 Category: Cardiology Authors: JOHN SILBERBAUER, ANITA ARYA, RICK A. VEASEY, LANA BOODHOO, KAYVAN KAMALVAND, SEAN O'NUNAIN, DAVID HILDICK-SMITH, VINCE PAUL, NIKHIL R. PATEL, GUY W. LLOYD, NEIL SULKE Source Type: journals

The BookEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 4, 2009 Category: Cardiology Authors: BLAIR P. GRUBB Source Type: journals

ECG Quantification of Myocardial Scar Does Not Differ between Primary and Secondary Prevention ICD Recipients with Ischemic Heart DiseaseEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:We found no significant difference in QRS score between the ischemic primary and secondary prevention groups. Therefore, a role of the Selvester QRS score as a risk stratifier remains unlikely. (PACE 2009; 1[ndash]6) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 4, 2009 Category: Cardiology Authors: KARIN KRAAIER, PASCAL F.H.M. VAN DESSEL, JOB VAN DER PALEN, ARTHUR A.M. WILDE, MARCOEN F. SCHOLTEN Source Type: journals

Transcriptional Profiling of Septal Wall of the Right Ventricular Outflow Tract in Patients with Idiopathic Ventricular ArrhythmiasEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:The expression of genes responsible for the regulation of myocardial intracellular calcium and the development of RVOT are significantly down-regulated in the septal wall of the RVOT in patients with RVOT tachycardia compared with control subjects. (PACE 2009; 1[ndash]9) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 3, 2009 Category: Cardiology Authors: CAN HASDEMIR, HIKMET H. AYDIN, HANDAN A. CELIK, EVRIM SIMSEK, SERDAR PAYZIN, MERAL KAYIKCIOGLU, MEHMET AYDIN, HAKAN KULTURSAY, LEVENT H. CAN Source Type: journals

aVR, An Index of all ECG Limb Leads, with Clinical Utility for Monitoring of Patients with Edematous States, Including Heart FailureEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:aVR could be taken as an index of all ECG limb leads in analysis in general, and in monitoring patients with EDST, CHF, and HD in particular. (PACE 2009; 1[ndash]10) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 2, 2009 Category: Cardiology Authors: JOHN E. MADIAS Source Type: journals

Pharmacological Treatment of Electrical Storm in Cathecolaminergic Polymorphic Ventricular TachycardiaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We present a case of a young boy who had an implantable cadrioverter defibrillator implanted for refractory syncope and cathecolaminergic polymorphic ventricular tachycardia (CPVT). The patient underwent an electrical storm with multiple shocks and serious compromise of quality of life and risk. The pharmacological options are discussed as well as the strategies of managing ventricular arrhythmias in CPVT. (PACE 2009; e1[ndash]e5) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 2, 2009 Category: Cardiology Authors: ALEXSANDRO FAGUNDES, LUIZ PEREIRA DE MAGALHAES, MARCELO RUSSO, EDVALDO XAVIER Source Type: journals

Bridging a Temporary High Risk of Sudden Arrhythmic Death. Experience with the Wearable Cardioverter Defibrillator (WCD)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This article describes the technological aspects of the WCD, discusses current indications for its use, and reviews the clinical studies with the WCD. Additionally, data are reported on the clinical experience with the WCD based on 354 patients from Germany hospitalized between 2000 and 2008 who wore the WCD for a mean of 3 months. (PACE 2009; 1[ndash]15) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 2, 2009 Category: Cardiology Authors: HELMUT U. KLEIN, ULF MELTENDORF, SVEN REEK, JAN SMID, SEBASTIAN KUSS, IWONA CYGANKIEWICZ, CHRISTIAN JONS, STEVEN SZYMKIEWICZ, FRANK BUHTZ, ANKE WOLLBRUECK, WOJCIECH ZAREBA, ARTHUR J. MOSS Source Type: journals

Alternating LBBB and RBBB QRS Morphologies with Two Different Supraventricular Rhythms: What Is the Mechanism?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 2, 2009 Category: Cardiology Authors: TAKUMI YAMADA, H. THOMAS McELDERRY, HARISH DOPPALAPUDI, G. NEAL KAY Source Type: journals

Ethics in Electrophysiology: A Complaint from Palliative CareEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 2, 2009 Category: Cardiology Authors: LOU-ANNE M. BEAUREGARD Source Type: journals

Transseptal Catheterization: Considerations and CaveatsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Transseptal catheterization is used by interventional cardiologists to gain access in the left atrium. This technique was initially introduced for left-sided pressure measurements and has been integrated in a variety of procedures including left atrial ablations and percutaneous mitral valvuloplasties. The establishment of catheter ablation of atrial fibrillation as an effective treatment strategy has brought transseptal catheterization back to the limelight. Technique refinements, introduction of adjunctive imaging tools, and enrichment of available technical equipment have simplified the procedure. In the present article...
Source: Pacing and Clinical Electrophysiology : PACE - November 2, 2009 Category: Cardiology Authors: STYLIANOS TZEIS, GEORGE ANDRIKOPOULOS, ISABEL DEISENHOFER, SIEW YEN HO, GEORGE THEODORAKIS Source Type: journals

Pacemaker and Defibrillator Lead Extraction: Predictors of Mortality during Follow-UpEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions:Intravascular lead extraction is a safe and efficient method of removing leads. However, there is a subgroup of patients with systemic sepsis with raised inflammatory markers who are at high risk of in-hospital mortality. Long-term follow-up demonstrates mortality which is a marker of the underlying etiology for device implantation, with heart failure patients particularly at risk. (PACE 2009; 1[ndash]8) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 2, 2009 Category: Cardiology Authors: SHOAIB HAMID, ARUNA ARUJUNA, MATTHEW GINKS, MARK McPHAIL, NIKHIL PATEL, CLIFF BUCKNALL, CHRISTOPHER RINALDI Source Type: journals

Long-Term Clinical Efficacy and Risk of Catheter Ablation for Atrial Fibrillation in OctogenariansEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:Octogenarian patients, despite more coexistent cardiovascular diseases, have favorable outcomes after AF ablation measured by successful rhythm management. On an average their hospital stay is longer, but no significant increase in short- or long-term complications was observed. These data support AF ablation in select octogenarians. (PACE 2009; 1[ndash]7) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 2, 2009 Category: Cardiology Authors: T. JARED BUNCH, J. PETER WEISS, BRIAN G. CRANDALL, HEIDI T. MAY, TAMI L. BAIR, JEFFREY S. OSBORN, JEFFREY L. ANDERSON, DONALD L. LAPPE, J. BRENT MUHLESTEIN, JENNIFER NELSON, JOHN D. DAY Source Type: journals

Prediction of Head-Up Tilt Test Result: Is it Possible?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions:The results suggest that the early increase in HR during the first 10 minutes of the HUTT may not be a useful parameter for predicting the test result. Many factors, such as late exaggeration in sympathetic activity during HUTT and age-dependent reduction in baroreflex sensitivity, may attenuate the predictive value of early HR increase. (PACE 2009; 1[ndash]6) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - November 2, 2009 Category: Cardiology Authors: UGUR TURK, EMIN ALIOGLU, BAHADIR KIRILMAZ, HAMZA DUYGU, NURULLAH TUZUN, ISTEMIHAN TENGIZ, MEHDI ZOGHI, ERTUGRUL ERCAN Source Type: journals

Cavotricuspid Isthmus: Anatomy, Electrophysiology, and Long-Term Outcome of Radiofrequency AblationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The cavotricuspid isthmus (CTI) had a complex architecture with an anisotropic conduction property. An incremental pacing from the low right atrial isthmus produced a conduction delay and block, and initiated atrial flutter. Radiofrequency catheter ablation of the CTI was very effective in eliminating the typical atrial flutter. However, atrial fibrillation often occurred after ablation of the isthmus and needs further treatment. (PACE 2009; 1[ndash]5) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 19, 2009 Category: Cardiology Authors: Ching-Tai Tai, Shin-Ann Chen Source Type: journals

Impact of Right Ventricular Pacing Sites on Exercise Capacity during Ventricular Rate Regularization in Patients with Permanent Atrial FibrillationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:In patients with permanent AF, VRR pacing at RVS, but not at RVA, improved exercise capacity during exercise. (PACE 2009; 1[ndash]7) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 13, 2009 Category: Cardiology Authors: HUNG-FAT TSE, CHUNG-WAH SIU, CHU-PAK LAU Source Type: journals

Superior Vena Cava Stenosis after Radiofrequency Catheter Ablation for Electrical Isolation of the Superior Vena CavaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This report describes a patient undergoing radiofrequency catheter ablation for electrical isolation of the SVC resulting in SVC stenosis. Noncircumferential lesion sets for SVC isolation to reduce ablation times may be preferred. (PACE 2009; e1[ndash]e3) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 12, 2009 Category: Cardiology Authors: MICHAEL KÜHNE, BEAT SCHAER, STEFAN OSSWALD, CHRISTIAN STICHERLING Source Type: journals

ICD Implantation after Crossing a Totally Occluded Subclavian Vein Via Collaterals from the Superior Vena CavaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We describe a case where venous access was obtained by passing a hydrophilic wire from the superior vena cava through collaterals to the infraclavicular region. (PACE 2009; e1[ndash]e3) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 11, 2009 Category: Cardiology Authors: RAVI RANJAN, CHARLES A. HENRIKSON Source Type: journals

Cardiac Resynchronization Therapy in Patients with Right Ventricular Pacing-Induced CardiomyopathyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:A CRT upgrade is an effective treatment for RV pacing-induced cardiomyopathy and should be implemented as soon as the diagnosis is established. Unfortunately, about 24% of our patients did not respond to the upgrade. (PACE 2009; 1[ndash]4) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 10, 2009 Category: Cardiology Authors: ALIREZA NAZERI, ALI MASSUMI, ABDI RASEKH, MOHAMMAD SAEED, CHRISTOPHER FRANK, MEHDI RAZAVI Source Type: journals

Use of an Angioplasty Wire to Perforate the Interatrial Septum for a Difficult Transseptal PunctureEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We report the case of a difficult transseptal puncture (TSP), performed where the conventional approach using a Brockenbrough needle sheath was unable to perforate the septum. TSP was only achieved using a novel technique assisted by an angioplasty wire. (PACE 2009; e1[ndash]e3) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 9, 2009 Category: Cardiology Authors: SYED Y. AHSAN, SUE WRIGHT, PIER D. LAMBIASE, JAMES W. McCREADY, ANTHONY W. CHOW Source Type: journals

Goose Neck Snare for LV Lead Placement in Difficult Venous AnatomyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This article describes how a commonly available goose neck snare is used to gain access to the distal end of the wire as it re-enters the coronary sinus retrograde via collaterals through an adjacent vein. The snare is advanced into the coronary sinus through the same catheter as the wire. The snare opens perpendicular to the long axis of the coronary sinus due to which the wire must pass through the open loop, provided the diameter of the snare is approximately the same as the coronary sinus. Thus no time-consuming manipulation of the snare is required. With access to both ends of the wire the vein is approached either re...
Source: Pacing and Clinical Electrophysiology : PACE - October 9, 2009 Category: Cardiology Authors: SETH J. WORLEY, DOUGLAS C. GOHN, ROBERT W. PULLIAM Source Type: journals

Noncontact Mapping of Left Ventricle during CRT ImplantEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:An NCM during CRT is safe and feasible. It provides an additional information on electrical activation in SR and in various modality of pacing. Further studies with larger populations are needed in order to correlate electrical to clinical outcomes. (PACE 2009; 1[ndash]11) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 9, 2009 Category: Cardiology Authors: CLAUDIO PRATOLA, PASQUALE NOTARSTEFANO, TIZIANO TOSELLI, PAOLO ARTALE, PAOLO SQUASI, ELISA BALDO, ROBERTO FERRARI Source Type: journals

Intrathoracic and Ventricular Impedances are Associated with Changes in Ventricular Volume in Patients Receiving Defibrillators for CRTEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Background:Some implantable cardioverter defibrillators (ICD) are able to monitor intrathoracic impedance to detect pulmonary fluid overload. This is achieved by measuring impedance between the ICD case and the right ventricular (RV) lead. We hypothesized that the measured impedance would rise with improvement in left ventricular (LV) volumes during cardiac resynchronization therapy (CRT), and that such impedance changes would be more apparent when measured with an alternative pacing vector. Methods:We analyzed echocardiographic and impedance data from heart failure patients implanted with a CRT[ndash]ICD capable of intrat...
Source: Pacing and Clinical Electrophysiology : PACE - October 9, 2009 Category: Cardiology Authors: MASSIMILIANO MAINES, MAURIZIO LANDOLINA, MAURIZIO LUNATI, GABRIELE LONARDI, ALESSIA PAPPONE, ALESSANDRO PROCLEMER, GABRIELE ZANOTTO, MASSIMO SANTINI, ANNAMARIA VARBARO, MARCO VIMERCATI, SERGIO VALSECCHI Source Type: journals

SmartDelay Determined AV Optimization: A Comparison of AV Delay Methods Used in Cardiac Resynchronization Therapy (SMART-AV): Rationale and DesignEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:SMART-AV is a randomized, clinical trial designed to evaluate three different methods of AV delay optimization to determine whether systematic AV optimization is beneficial for patients receiving CRT for 6 months post-implant. (PACE 2009; 1[ndash]10) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 9, 2009 Category: Cardiology Authors: KENNETH M. STEIN, KENNETH A. ELLENBOGEN, MICHAEL R. GOLD, BERND LEMKE, IGNACIO FERNÁNDEZ LOZANO, SUNEET MITTAL, FRANCIS G. SPINALE, JENNIFER E. VAN EYK, ALAN D. WAGGONER, TIMOTHY E. MEYER Source Type: journals

A Rare type of Ventricular Oversensing in ICD Therapy—Inappropriate ICD Shock Delivery Due to Triple CountingEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Irregular sensing by triple counting of wide QRS complexes resulted in inappropriate shocks in a patient with a biventricular implantable cardioverter defibrillator (ICD): A 66-year-old male patient with ischemic cardiomyopathy, left bundle branch block, and impaired left ventricular function received a biventricular ICD for optimal therapy of heart failure (CHF). Two years after implantation, the patient experienced recurrent unexpected ICD shocks without clinical symptoms of malignant tachyarrhythmia, or worsened CHF. The patient's condition rapidly worsened, with progressive cardiogenic shock and electrical[ndash]mechan...
Source: Pacing and Clinical Electrophysiology : PACE - October 9, 2009 Category: Cardiology Authors: MICHAEL GUENTHER, THOMAS P. RAUWOLF, MANJA BOCK, RUTH H. STRASSER, MARTIN U. BRAUN Source Type: journals

Stepwise Transition of 2:1 Atrio-Ventricular Block to 1:1 Conduction Induced by Ventricular Premature Beats in a Patient with Atypical AVNRTEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A 55-year-old man with a 2-year history of recurrent paroxysmal palpitations and with an electrocardiogram documentation of atypical atrioventricular nodal re-entrant tachycardia (AVNRT) was referred to us for catheter ablation. After an initial ablation attempt, several episodes of atypical AVNRT were induced. During one of these episodes, we documented a stepwise transition of 2:1 atrioventricular block to 1:1 conduction, following two single ventricular premature beats. This phenomenon confirmed the functional nature of the AV block during AVNRT and indirectly its infra-nodal location. (PACE 2009; e1[ndash]e4) (Source: ...
Source: Pacing and Clinical Electrophysiology : PACE - October 9, 2009 Category: Cardiology Authors: ANTONIO SORGENTE, GIAN BATTISTA CHIERCHIA, CARLO DE ASMUNDIS, YOSHINAO YAZAKI, ANDREA SARKOZY, PEDRO BRUGADA Source Type: journals

Isorhythmic Dissociation or "Pseudo-Bygeminy" of Depleted PacemakerEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We present an unusual electrocardiogram obtained from a patient with critically depleted pacemaker. (PACE 2009; e1[ndash]e2) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 9, 2009 Category: Cardiology Authors: FARID ALIYEV, CENGIZ ÇELIKER, CENGIZHAN TÜRKOĞLU, IŞIL UZUNHASAN Source Type: journals

Ivabradine to Treat Inappropriate Sinus Tachycardia after the Fast Pathway Ablation in a Patient with Severe Pectus ExcavatumEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We present the case of a 49-year-old woman with atrioventricular nodal re-entrant tachycardia and a severe pectus excavatum. The patient underwent an electrophysiological study and fast pathway ablation. Fast pathway ablation was not done on purpose but accidentally, likely due to the abnormal position of the heart in the chest cavity in this patient suffering from severe pectus excavatum. Some hours after the ablation, the patient developed inappropriate sinus tachycardia (IST), complaining of dyspnea and fatigue. IST has been described as a complication of fast pathway ablation in 10% of the cases. In our case it was not...
Source: Pacing and Clinical Electrophysiology : PACE - October 9, 2009 Category: Cardiology Authors: LUCIO CAPULZINI, ANDREA SARKOZY, OSCAR SEMERARO, GAETANO PAPARELLA, GIAN BATTISTA CHIERCHIA, CARLO DE ASMUNDIS, MARKUS ROOS, YOSHINAO YAZAKI, ANDREAS MULLER-BURRI, ANTONIO SORGENTE, PEDRO BRUGADA Source Type: journals

Recovery Following Propofol-Associated Brugada ElectrocardiogramEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We report a case in which a critically ill patient developed a Brugada ECG pattern following high-dose propofol infusion. Once the ECG pattern was recognized, the propofol was discontinued and the ECG pattern resolved, and the patient was discharged home with no arrhythmic sequelae. (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 9, 2009 Category: Cardiology Authors: JUSTIN B. WEINER, ELIAS V. HADDAD, SATISH R. RAJ Source Type: journals

Failure of an Implantable Cardioverter Defibrillator to Terminate Ventricular Tachycardia: Why?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 9, 2009 Category: Cardiology Authors: LETIZIA CONTI, NAM TRAN, HARAN BURRI, MARC ZIMMERMANN Source Type: journals

Right Ventricular Septal Pacing: The Success of Stylet-Driven Active-Fixation LeadsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions:The study confirms that conventional active-fixation pacing leads can be successfully and safely deployed onto the RV septum using a purposely-shaped stylet guided only by the PA fluoroscopic projection. (PACE 2009; 1[ndash]5) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 5, 2009 Category: Cardiology Authors: RAPHAEL ROSSO, ANDREW W. TEH, CAROLINE MEDI, THUY TO HUNG, RICHARD BALASUBRAMANIAM, HARRY G. MOND Source Type: journals

Permanent Pacemaker Implantation Following Aortic Valve Replacement: Current Prevalence and Clinical PredictorsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:CHB and PPM implantation continue to be common complications of AVR. Preexisting atrioventricular with intrafascicular or intraventricular conduction disease along with cardiac arrest and dual valve surgery are the most important significant predictors of PPM implantation and PPM dependency during follow-up. The selection of valve types did not predict conduction disease requiring PPM implantation. (PACE 2009; 1[ndash]6) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 4, 2009 Category: Cardiology Authors: HIEU HUYNH, GHASSAN DALLOUL, HAMID GHANBARI, PETER BURKE, MARIAM DAVID, MARCOS DACCARETT, CHRISTIAN MACHADO, SHUKRI DAVID Source Type: journals

Reflections on Industry-Supported–Continuing–Medical Educational Activities for Cardiac Electrophysiology TraineesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 4, 2009 Category: Cardiology Authors: MELVIN M. SCHEINMAN Source Type: journals

Idiopathic Premature Ventricular Contractions Exhibiting Preferential Conduction within the Aortic RootEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A 65-year-old man with frequent premature ventricular contractions (PVCs) underwent electrophysiological testing. Although an excellent pace map was obtained from the right coronary cusp (RCC), radiofrequency ablation at that site interrupted the PVCs transiently. Successful ablation was achieved in the left coronary cusp with earlier local ventricular activation during the PVCs than that in the RCC. These findings suggest that preferential conduction within the aortic root may exist and cause ventricular arrhythmias (VAs) arising from this region to exhibit variable electrocardiographic features, thereby limiting the reli...
Source: Pacing and Clinical Electrophysiology : PACE - October 4, 2009 Category: Cardiology Authors: TAKUMI YAMADA, YUKIHIKO YOSHIDA, YASUYA INDEN, TOYOAKI MUROHARA, G. NEAL KAY Source Type: journals

Impact of Temporary Interruption of Right Ventricular Pacing for Heart Block on Left Ventricular Function and DyssynchronyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions:Temporary interruption of chronic RV pacing acutely improves LV dyssynchrony and systolic function in children and young adults, the magnitude of which is greater in patients with congenital than those with surgically acquired heart block. (PACE 2009; 1[ndash]8) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 4, 2009 Category: Cardiology Authors: WEN-JING HONG, TAK-CHEUNG YUNG, KIN-SHING LUN, SOPHIA JESSICA WONG, YIU-FAI CHEUNG Source Type: journals

Nontraditional Implantable Cardioverter Defibrillator Placement in Adult Patients with Limited Venous Access: A Case SeriesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:Nontraditional alternative surgical methods for the placement of ICD systems in adult patients with limited venous access or TV dysfunction can achieve results similar to those of conventionally placed endovascular leads with limited complications and comparable DFTs in short-term follow-up. (PACE 2009; 1[ndash]9) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 4, 2009 Category: Cardiology Authors: MAYURKUMAR BHAKTA, CHEDOZIE C. OBIOHA, DAN SORAJJA, KOMADOOR SRIVATHSAN, FRANCISCO A. ARABIA, PATRICK A. DEVALERIA, DAWN E. JAROSZEWSKI, LUIS R. SCOTT, GREGORY T. ALTEMOSE Source Type: journals

Predictors of Appropriate Implantable Cardioverter Defibrillator (ICD) Therapy in Primary Prevention Patients with Ischemic and Nonischemic CardiomyopathyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions:ICD-delivered therapy occurred in 19% of primary prevention patients with both ischemic and dilated cardiomyopathy and was predicted by NSVT and a lack of[beta]-blocker use. (PACE 2009; 1[ndash]10) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - October 1, 2009 Category: Cardiology Authors: ATUL VERMA, BRADLEY SARAK, ALEXANDER J. KAPLAN, RICHARD OOSTHUIZEN, MARIANNE BEARDSALL, ZAEV WULFFHART, JANET HIGENBOTTAM, YAARIV KHAYKIN Source Type: journals

Knowing Our LimitsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - September 30, 2009 Category: Cardiology Authors: CHRISTOPHER J. COOPER Source Type: journals

The Contribution of HCN4 to Normal Sinus Node Function in Humans and Animal ModelsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Although sinus node bradycardia is a very common clinical condition, the cellular mechanisms contributing to abnormal sinus node function are not clearly delineated. In recent publications, mutations in the hyperpolarization-activated, cyclic nucleotide-gated (HCN) 4 channels have been associated with sinus bradycardia. These channels are thought to be crucial in generating the spontaneous sinus node action potential, in accelerating the heart rate during sympathetic drive, and decelerating heart rate during vagal stimulation. Humans carrying HCN4 mutations indeed display significant bradycardia. Recent studies generating ...
Source: Pacing and Clinical Electrophysiology : PACE - September 30, 2009 Category: Cardiology Authors: EYAL NOF, CHARLES ANTZELEVITCH, MICHAEL GLIKSON Source Type: journals

Continued Rise in Rates of Cardiovascular Implantable Electronic Device Infections in the United States: Temporal Trends and Causative InsightsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion:The number of patients with CIED-related infections in the United States continues to increase out of proportion to the increase in implantation rates. Possible causes for this on-going epidemic include sicker patients with varying racial backgrounds, and more complex procedures. These insights may help improve our ability to best select patients for CIED implantation in "real-life" settings. (PACE 2009; 1[ndash]6) (Source: Pacing and Clinical Electrophysiology : PACE)
Source: Pacing and Clinical Electrophysiology : PACE - September 30, 2009 Category: Cardiology Authors: ANDREW VOIGT, ALAA SHALABY, SAMIR SABA Source Type: journals