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Journal of cardiovascular electrophysiology 18건

  1. [해외논문]   Issue Information   SCI SCIE


    Journal of cardiovascular electrophysiology v.28 no.2 ,pp. 133 - 136 , 2017 , 1045-3873 ,

    초록

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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    Fig. 1 이미지
  2. [해외논문]   Catheter Ablation for Atrial Fibrillation in Patients With Watchman Left Atrial Appendage Occlusion Device: Results from a Multicenter Registry   SCI SCIE

    TURAGAM, MOHIT K. (Division of Cardiovascular Disease, University of Missouri Hospital and Clinics, Columbia, Missouri, USA) , LAVU, MADHAV (Division of Cardiovascular Diseases, Cardiovascular Research Institute, University of Kansas Hospital and Medical Center, Kansas City, Kansas, USA) , AFZAL, MUHAMMAD R. (Division of Cardiovascular Diseases, Cardiovascular Research Institute, University of Kansas Hospital and Medical Center, Kansas City, Kansas, USA) , VUDDANDA, VENKAT (Division of Cardiovascular Diseases, Cardiovascular Research Institute, University of Kansas Hospital and Medical Center, Kansas City, Kansas, USA) , JAZAYERI, MOHAMMAD‐ (Division of Cardiovascular Diseases, Cardiovascular Research Institute, University of Kansas Hospital and Medical Center, Kansas City, Kansas, USA) , ALI (Division of Cardiovascular Disease, University of Missouri Hospital and Clinics, Columbia, Missouri, U) , PARIKH, VALAY , ATKINS, DONITA , BOMMANA, SUDHARANI , DI BIASE, LUIGI , HORTON, RODNEY , BAI, RONG , SWARUP, VIJAY , CHENG, JIE , NATALE, ANDREA , LAKKIREDDY, DHANUNJAYA
    Journal of cardiovascular electrophysiology v.28 no.2 ,pp. 139 - 146 , 2017 , 1045-3873 ,

    초록

    AF Ablation After Watchman Background There have been an increasing number of atrial fibrillation (AF) patients with Watchman left atrial appendage occlusion (LAAO) device, requiring catheter ablation (CA) for maintenance of normal sinus rhythm. In this study, we describe our experience with the feasibility and safety of CA in patients with a preexisting Watchman LAAO device. Methods This was a retrospective multicenter AF registry of 60 patients with Watchman LAAO device who underwent CA for AF. Baseline clinical and procedural characteristics of the included subjects were retrieved from review of medical records and were analyzed. Results The mean age was 72.7 ± 4.9 years and the mean CHADS2 score was 2.3 ± 0.6. All patients had successful pulmonary vein isolation (PVI). The left atrial appendage (LAA) was electrically active in 34 (56%) while reentrant tachycardia and AF triggers were seen in 17 (28%) patients. Electrical isolation was attempted in these 17 patients with only 10 achieving complete LAA isolation. Repeat imaging showed new peri‐device leaks in 30% (12/40) patients, while new significant peri‐device leaks (≥5 mm) were noted in 10% (10/40) of patients after RFA, respectively, requiring continuation of oral anticoagulation. There were a higher proportion of patients with severe peri‐device leaks (≥5 mm) after LAA isolation. However, >50% of those leaks sealed off on follow‐up transesophageal echocardiogram. Conclusion AF ablation is a feasible and safe in patients with preexisting Watchman LAAO device. Electrical isolation of the LAA could be difficult and when attempted can result in increased risk of short‐term peri‐device leak and recurrence of AT/AF in almost all patients.

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    원문보기
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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  3. [해외논문]   Long‐Term Outcome of Left Atrial Voltage‐Guided Substrate Ablation During Atrial Fibrillation: A Novel Adjunctive Ablation Strategy   SCI SCIE

    YAGISHITA, ATSUHIKO (University Hospitals Harrington Heart and Vascular Institute, Case Western Reserve University, School of Medicine, Cleveland, Ohio, United States) , GIMBEL, J. ROD (University Hospitals Harrington Heart and Vascular Institute, Case Western Reserve University, School of Medicine, Cleveland, Ohio, United States) , DE OLIVEIRA, SAMER (University Hospitals Harrington Heart and Vascular Institute, Case Western Reserve University, School of Medicine, Cleveland, Ohio, United States) , MANYAM, HARISH (University Hospitals Harrington Heart and Vascular Institute, Case Western Reserve University, School of Medicine, Cleveland, Ohio, United States) , SPARANO, DINA (University Hospitals Harrington Heart and Vascular Institute, Case Western Reserve University, School of Medicine, Cleveland, Ohio, United States) , CAKULEV, IVAN (University Hospitals Harrington Heart and Vascular Institute, Cas) , MACKALL, JUDITH , ARRUDA, MAURICIO
    Journal of cardiovascular electrophysiology v.28 no.2 ,pp. 147 - 155 , 2017 , 1045-3873 ,

    초록

    Voltage‐Guided Atrial Fibrillation Substrate Ablation Introduction Left atrium (LA) low voltage area (LVA) on 3‐D electroanatomic bipolar voltage mapping (EAVM), as a surrogate for scar, is associated with poor AF ablation outcome. We evaluated the long‐term outcome of an LVA‐guided atrial fibrillation (AF) substrate modification strategy as an adjunct to pulmonary vein isolation (PVI). Methods and Results Two hundred and one consecutive patients with AF (82% persistent/Non‐PAF, age 65 years), who underwent EAVM during AF prior to PVI, were divided into 2 groups according to the presence or absence of LVA outside the PV antra, defined as bipolar voltage of 2 DS 2 ‐VAS c score (OR 1.815, P Conclusions Patients with LVA had an equally favorable long‐term ablation outcome compared to those without. As an adjunct to PVI, voltage‐guided substrate modification may be an important ablation strategy in patients with LA structural remodeling.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  4. [해외논문]   Substrate Ablation for Treatment of Atrial Fibrillation: Back to Basics   SCI SCIE

    GOLDBERGER, JEFFREY J. (Miller School of Medicine, University of Miami, Miami, Florida, USA)
    Journal of cardiovascular electrophysiology v.28 no.2 ,pp. 156 - 158 , 2017 , 1045-3873 ,

    초록

    Voltage‐Guided Atrial Fibrillation Substrate Ablation Introduction Left atrium (LA) low voltage area (LVA) on 3‐D electroanatomic bipolar voltage mapping (EAVM), as a surrogate for scar, is associated with poor AF ablation outcome. We evaluated the long‐term outcome of an LVA‐guided atrial fibrillation (AF) substrate modification strategy as an adjunct to pulmonary vein isolation (PVI). Methods and Results Two hundred and one consecutive patients with AF (82% persistent/Non‐PAF, age 65 years), who underwent EAVM during AF prior to PVI, were divided into 2 groups according to the presence or absence of LVA outside the PV antra, defined as bipolar voltage of 2 DS 2 ‐VAS c score (OR 1.815, P Conclusions Patients with LVA had an equally favorable long‐term ablation outcome compared to those without. As an adjunct to PVI, voltage‐guided substrate modification may be an important ablation strategy in patients with LA structural remodeling.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  5. [해외논문]   Blanking Period Phenomenon After a Second Atrial Fibrillation Ablation Session: The Application and Factors Related to It   SCI SCIE

    FUJIMOTO, YUHI (Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan) , HAYASHI, MEISO (Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan) , IWASAKI, YU‐ (Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan) , KI (Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan) , YODOGAWA, KENJI (Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan) , YAMAMOTO, TEPPEI (Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan) , TSUBOI, IPPEI (Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan) , TAKAHASHI, KENTA (Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan) , IZUMI, YUKI (Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan<count) , OKA, EIICHIRO , HAGIWARA, KANAKO , MIYAUCHI, YASUSHI , SHIMIZU, WATARU
    Journal of cardiovascular electrophysiology v.28 no.2 ,pp. 159 - 166 , 2017 , 1045-3873 ,

    초록

    Blanking Period After a Second AF Ablation Introduction The concept of a 3‐month blanking period is widely accepted after the first radiofrequency catheter ablation (RFCA) session for atrial fibrillation (AF). We sought to investigate whether this phenomenon was also observed after a 2nd session, and which factors were related to it. Methods and Results We conducted a prospective observational study including all AF patients who underwent RFCA since 2010. The patients who underwent a second RFCA were followed without any antiarrhythmic drugs. Their clinical background, laboratory data, echocardiographic parameters, ablation procedures, and arrhythmia recurrences were analyzed. Recurrences were classified into early period recurrences (EPRs) and late period recurrences (LPRs) recorded within and after the first 3 months postablation, respectively. Among 925 patients who underwent an initial AF ablation, 2nd sessions were performed in 250 patients, and EPRs and LPRs occurred in 53 (21.2%) and 54 (21.6%) patients, respectively. Although EPRs were an independent predictor of LPRs (hazard ratio [HR], 8.01; 95% confidence interval [CI] 4.03–15.93, P Conclusion A 3‐month blanking period was also applicable after the 2nd AF ablation session. This phenomenon was related to a lower left atrial pressure demonstrated by the E/E′ ratio.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  6. [해외논문]   Changes in Left Atrial Transport Function in Patients Who Maintained Sinus Rhythm After Successful Radiofrequency Catheter Ablation for Atrial Fibrillation: A 1‐Year Follow‐Up Multislice Computed Tomography Study   SCI SCIE

    KIM, JIN‐ (Division of Cardiology, Cardiovascular Center, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea) , SEOK (Division of Cardiology, Kosin University Gospel Hospital, College of Medicine, Kosin University, Busan, Korea) , IM, SUNG IL (Division of Cardiology, Heart Research Institute, College of Medicine, Chung‐Ang University, Seoul, Korea) , SHIN, SEUNG YONG (Division of Cardiology, Cardiovascular Center, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea) , KANG, JUN HYUK (Division of Cardiology, Cardiovascular Center, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea) , NA, JIN OH (Division of Cardiology, Cardiovascular Center, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea) , CHOI, CHEOL UNG (Division of Cardi) , KIM, SEONG HWAN , KIM, EUNG JU , RHA, SEUNG‐ , WOON , PARK, CHANG GYU , SEO, HONG SEOG , OH, DONG JOO , HWANG, CHUN , KIM, YOUNG‐ , HOON , YONG, HWAN SEOK , LIM, HONG EUY
    Journal of cardiovascular electrophysiology v.28 no.2 ,pp. 167 - 176 , 2017 , 1045-3873 ,

    초록

    Conclusions: Although SR was maintained for 1 year after AF ablation, LAEF as well as LAV decreased. The extent of LAEF deterioration was significantly associated with the amount of iatrogenic myocardial damage. Our data indicate that extensive atrial ablationmay lead to LA functional deterioration, especially in patients with PAF.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  7. [해외논문]   Outcome of Patients With Cardiac Sarcoidosis Who Received Cardiac Resynchronization Therapy: Comparison With Dilated Cardiomyopathy Patients   SCI SCIE

    YUFU, KUNIO (Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Yufu‐city, Oita, Japan) , KONDO, HIDEKAZU (Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Yufu‐city, Oita, Japan) , SHINOHARA, TETSUJI (Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Yufu‐city, Oita, Japan) , KAWANO, KYOKO (Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Yufu‐city, Oita, Japan) , ISHII, YUMI (Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Yufu‐city, Oita, Japan) , MIYOSHI, MIHO (Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Yufu‐city, Oita, Japan) , IMAMURA, TAKAAKI (Department of Cardiology and Clinical Examinat) , SAITO, SHOTARO , OKADA, NORIHIRO , AKIOKA, HIDEFUMI , TESHIMA, YASUSHI , NAKAGAWA, MIKIKO , TAKAHASHI, NAOHIKO
    Journal of cardiovascular electrophysiology v.28 no.2 ,pp. 177 - 181 , 2017 , 1045-3873 ,

    초록

    Cardiac Sarcoidosis and CRT Outcome Introduction Cardiac resynchronization therapy (CRT) has been shown to be effective for patients with chronic heart failure; however, the efficacy of CRT in patients with cardiac sarcoidosis (CS) has not been established. Methods We compared the outcomes of patients with CS who received CRT to patients with dilated cardiomyopathy (DCM). The incidence of major adverse cerebral and cardiovascular events (MACCE) in 11 consecutive CS patients (8 females; mean age, 66 ± 8.0 years) who received CRT were compared with 29 DCM patients (9 females; mean age, 70 ± 8.9 years). Results Females and patients with previous right ventricular pacing were largely included in the comparison of CS and DCM patients (P Conclusion Our results suggest that the long‐term outcome of CRT in patients with CS was very poor compared with DCM patients. Thus, caution should be exercised regarding the indication of CRT in patients with CS.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  8. [해외논문]   Resynchronization Therapy in Cardiac Sarcoidosis and Severe Heart Failure: When Good May Not Be Good Enough   SCI SCIE

    ZIPSE, MATTHEW M. (Section of Cardiac Electrophysiology, University of Colorado, Aurora, Colorado, USA) , TZOU, WENDY S. (Section of Cardiac Electrophysiology, University of Colorado, Aurora, Colorado, USA)
    Journal of cardiovascular electrophysiology v.28 no.2 ,pp. 182 - 184 , 2017 , 1045-3873 ,

    초록

    Cardiac Sarcoidosis and CRT Outcome Introduction Cardiac resynchronization therapy (CRT) has been shown to be effective for patients with chronic heart failure; however, the efficacy of CRT in patients with cardiac sarcoidosis (CS) has not been established. Methods We compared the outcomes of patients with CS who received CRT to patients with dilated cardiomyopathy (DCM). The incidence of major adverse cerebral and cardiovascular events (MACCE) in 11 consecutive CS patients (8 females; mean age, 66 ± 8.0 years) who received CRT were compared with 29 DCM patients (9 females; mean age, 70 ± 8.9 years). Results Females and patients with previous right ventricular pacing were largely included in the comparison of CS and DCM patients (P Conclusion Our results suggest that the long‐term outcome of CRT in patients with CS was very poor compared with DCM patients. Thus, caution should be exercised regarding the indication of CRT in patients with CS.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  9. [해외논문]   Effect of PR Interval on Outcomes Following Cardiac Resynchronization Therapy: A Secondary Analysis of the COMPANION Trial   SCI SCIE

    LIN, JEFFREY (Division of Cardiovascular Medicine, Department of Medicine, Madison, Wisconsin, USA) , BUHR, KEVIN A. (Department of Biostatistics and Medical Informatics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA) , KIPP, RYAN (Division of Cardiovascular Medicine, Department of Medicine, Madison, Wisconsin, USA)
    Journal of cardiovascular electrophysiology v.28 no.2 ,pp. 185 - 191 , 2017 , 1045-3873 ,

    초록

    Effect of PR Interval on CRT Outcomes Background Prolonged PR intervals may impair atrioventricular mechanical coupling and adversely affect cardiac performance. We hypothesize that patients with advanced systolic heart failure, wide QRS complexes, and prolonged PR intervals will have improved survival from CRT‐D regardless of whether left bundle branch block (LBBB) or non‐LBBB is present. Methods and Results A total of 308 patients enrolled in the optimal pharmacologic therapy (OPT) and 595 patients in the cardiac resynchronization therapy with defibrillation (CRT‐D) arms of the Comparison of Medical Therapy, Pacing, and Defibrillation in Heart Failure trial were stratified according to normal (≤230 ms) or prolonged PR interval (>230 ms). The incidence of all‐cause mortality (ACM) or hospitalization (primary endpoint) and ACM (secondary endpoint) was compared using Kaplan–Meier curves. Cox proportional hazards models for the primary and secondary endpoints were fit with LBBB status and baseline PR interval. CRT‐D treatment reduced both hospitalization/ACM (P = 0.002) and ACM (P = 0.003) compared to OPT. However, CRT‐D was increasingly more effective in reducing ACM hazard in patients with longer baseline PR intervals (P = 0.002) regardless of LBBB status. In particular, in the prolonged baseline PR interval subgroup, ACM was reduced with CRT‐D compared to OPT (P = 0.001) with little evidence of ACM reduction in the normal PR subgroup (P = 0.07). Conclusions In patients with advanced systolic heart failure, wide QRS complexes, and prolonged PR intervals, restoration of atrioventricular mechanical coupling with CRT‐D may improve survival regardless of LBBB status. In patients with non‐LBBB, a benefit from CRT‐D may occur with prolonged PR intervals.

    원문보기

    원문보기
    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

    Fig. 1 이미지
  10. [해외논문]   Biventricular Paced QRS Area Predicts Acute Hemodynamic CRT Response Better Than QRS Duration or QRS Amplitudes   SCI SCIE

    DE POOTER, JAN (Ghent University Hospital, Heart Center, Ghent, Belgium) , EL HADDAD, MILAD (Ghent University Hospital, Heart Center, Ghent, Belgium) , DE BUYZERE, MARC (Ghent University Hospital, Heart Center, Ghent, Belgium) , ARANDA, HERNANDEZ ALFONSO (Medtronic Plc, Bakken Research Center, Maastricht, The Netherlands) , CORNELUSSEN, RICHARD (Medtronic Plc, Bakken Research Center, Maastricht, The Netherlands) , STEGEMANN, BERTHOLD (Medtronic Plc, Bakken Research Center, Maastricht, The Netherlands) , RINALDI, CHRISTOPHER A. (Guy's and St Thomas' NHS Trust, London, UK) , STERLINSKI, MACIEJ (The Second Department of Coronary Artery Disease, Institute of Cardiology, Warsaw, Poland) , SOKAL, ADAM (Department of Cardiology, Congenital Heart Diseases and Electrotherapy Silesian Center of Heart Disease, Zabrze, Poland) , FRANCIS, DARREL P. (Faculty of Medici) , JORDAENS, LUC , STROOBANDT, ROLAND X. , VAN HEUVERSWYN, FREDERIC , TIMMERMANS, FRANK
    Journal of cardiovascular electrophysiology v.28 no.2 ,pp. 192 - 200 , 2017 , 1045-3873 ,

    초록

    Paced QRS Area Predicts CRT Response Introduction Vectorcardiographic (VCG) QRS area of left bundle branch block (LBBB) predicts acute hemodynamic response in cardiac resynchronization therapy (CRT) patients. We hypothesized that changes in QRS area occurring with biventricular pacing (BV) might predict acute hemodynamic CRT response (AHR). Methods and Results VCGs of 624 BV paced electrocardiograms (25 LBBB patients with 35 different pacing configurations) were calculated according to Frank's orthogonal lead system. Maximum QRS vector amplitudes (X Ampl , Y Ampl , Z Ampl , and 3D Amp ) and QRS areas (X Area , Y Area , Z Area , and 3D Area ) in the orthogonal leads (X, Y, and Z) and in 3‐dimensional projection were measured. Volume of the 3D vector loop and global QRS duration (QRSD) on the surface electrocardiogram were assessed. Differences (Δ) in VCG parameters between BV paced and LBBB QRS complexes were calculated. An increase of 10% in dP/dt max was considered as AHR. LBBB conduction is characterized by a large Z Area (109 μVs, interquartile range [IQR]:75;135), significantly larger than X Area (22 μVs, IQR:10;57) and Y Area (44 μVs, IQR:32;62, P Ampl , Δ3D Ampl , Z Area, ΔZ Area , Δ3D Area , and ΔQRSD differentiate AHR response from nonresponse (P Area predicted best positive AHR (area under the curve = 0.813) and outperformed any other VCG parameter or QRSD measurement. Conclusion Of all VCG parameters, reduction in QRS area, calculated in Frank's Z lead, predicts acute hemodynamic response best. This method might be an easy, noninvasive tool to guide CRT implantation and optimization.

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