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Therapy: Cardiac Resynchronization Therapy

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Total 150 results found since Jan 2013.

A Pilot Study Assessing ECG vs. ECHO Ventriculo‐Ventricular Optimization in Pediatric Resynchronization Patients
Conclusion: ECHO optimization of synchrony was not superior to ECG optimization in this pilot study. ECG optimization required less time and cost than ECHO optimization.This article is protected by copyright. All rights reserved
Source: Journal of Cardiovascular Electrophysiology - October 30, 2015 Category: Cardiology Authors: RAJESH PUNN, DEBRA HANISCH, KARA S. MOTONAGA, DAVID N. ROSENTHAL, SCOTT R. CERESNAK, ANNE M. DUBIN Tags: Original Article Source Type: research

Letter by Cacko, et al Regarding Article, "Improvement of Cardiac Function by Increasing Stimulus Strength During Left Ventricular Pacing in Cardiac Resynchronization Therapy".
Authors: Cacko A, Michalak M, Główczyńska R, Kochanowski J, Grabowski M Abstract Dear Editor,We have read with great interest the article discussing an improvement of cardiac function by increasing stimulus strength during left ventricular pacing in cardiac resynchronization therapy (CRT) by Ishibashi, et al.(1)) The authors investigated whether increasing stimulus strength of left ventricle (LV) pacing improves LV mechanical dyssynchrony and cardiac function in patients treated with CRT. According to their observation higher stimulus strength may result in statistically significant decreases in QRS duration, se...
Source: International Heart Journal - September 16, 2015 Category: Cardiology Tags: Int Heart J Source Type: research

Echocardiography and cardiac resynchronization therapy
Publication date: Available online 12 September 2015 Source:Cor et Vasa Author(s): Josef Marek, Jana Gandalovičová, Eva Kejřová, Miroslav Pšenička, Aleš Linhart, Tomáš Paleček Cardiac resynchronization therapy (CRT) is an effective therapeutic option in patients with congestive heart failure, left ventricular ejection fraction≤35%, and a widened QRS complex. However, a significant proportion of individuals do not respond to CRT favorably. Understandably, a large number of studies have addressed various techniques to improve patient selection for CRT and to improve responder rate in patients with CRT dev...
Source: Cor et Vasa - September 12, 2015 Category: Cardiology Source Type: research

Effects of Cardiac Resynchronization Therapy on Cardiac Remodeling and Contractile Function: Results From Resynchronization Reverses Remodeling in Systolic Left Ventricular Dysfunction (REVERSE) Heart Failure
Conclusion In patients with NYHA Class I/II heart failure, cardiac resynchronization therapy exerts favorable changes in left ventricular end-systolic and end-diastolic volumes and the volume intercept. The volume intercept may be useful to gain insight into prognosis in heart failure. Clinical Trial Registration URL: https://www.clinicaltrials.gov/. Unique identifier: NCT00271154.
Source: JAHA:Journal of the American Heart Association - September 11, 2015 Category: Cardiology Authors: St. John Sutton, M., Cerkvenik, J., Borlaug, B. A., Daubert, C., Gold, M. R., Ghio, S., Chirinos, J. A., Linde, C., Ky, B. Tags: Heart Failure Source Type: research

Biotronik launches Itrevia MRI-safe quad CRT-D in Japan
Biotronik said today that it launched its Itrevia MRI-safe quad cardiac resynchronization therapy defibrillator in Japan, part of a Japanese rollout of new devices for 2015. The device is equipped with home monitoring connectivity, as well as compatibility with up to 1.5 tesla MRI machines, the German medical device giant said. “As a producer of superior medical technologies, it is imperative for us to have a presence in the world’s leading technologies market. It also makes sense that the world’s biggest producer of ProMRI technology should have a strong presence in the country where MRI scanning is the...
Source: Mass Device - July 2, 2015 Category: Medical Equipment Authors: Fink Densford Tags: Cardiac Assist Devices Cardiac Implants Cardiovascular Surgical Biotronik Source Type: news

Abstract 224: No Difference in Complications or Mortality by Implanted Cardioverter Defibrillator Type in Veterans Enrolled in The Outcomes Among Veterans with Implantable Devices (OVID) Registry Session Title: Poster Session II
Conclusions: Unadjusted analyses showed an association between dual chamber ICD and CRT-D devices and risk of non-fatal major events and the composite outcome versus single chamber ICD implantation. This did not persist when adjusted for clinical characteristics and comorbidities, though we are underpowered for small differences. Further study is needed as prior reports may not have adjusted adequately for clinical covariates and lacked validated outcomes.
Source: Circulation: Cardiovascular Quality and Outcomes - April 29, 2015 Category: Cardiology Authors: Schneider, P. M., Pellegrini, C. N., Heidenreich, P., Keung, E., Massie, B. M., Aleong, R. G., Peterson, P. N., Varosy, P. D. Tags: Session Title: Poster Session II Source Type: research

Cardiac Resynchronization Therapy Acutely Improves Ventricular‐Arterial Coupling by Reducing the Arterial Load: Assessment by Pressure–Volume Loops
ConclusionOur data indicate that switching CRT on induces an immediate reduction in arterial load, conceivably as a consequence of restored autonomic balance.
Source: Pacing and Clinical Electrophysiology : PACE - January 28, 2015 Category: Cardiology Authors: PAOLO PIERAGNOLI, GIOVANNI BATTISTA PEREGO, GIUSEPPE RICCIARDI, STEFANIA SACCHI, MARGHERITA PADELETTI, ANTONIO MICHELUCCI, SERGIO VALSECCHI, LUIGI PADELETTI Tags: ORIGINAL ARTICLE Source Type: research

Feasibility of a novel atrioventricular delay optimization method using transmitral and pulmonary venous flow in patients with sequential ventricular pacing or cardiac resynchronization therapy
Conclusions AV delay optimization using TMF and PV flow was feasible. Usefulness of this method requires further investigation with a larger study population.
Source: Journal of Echocardiography - December 19, 2014 Category: Cardiology Source Type: research

The Use of Quadripolar Left Ventricular Leads Improves the Hemodynamic Response to Cardiac Resynchronization Therapy
ConclusionsThe quadripolar LV lead was associated with a better hemodynamic response and higher CRT responder rates when compared with unipolar‐simulated and bipolar LV leads.
Source: Pacing and Clinical Electrophysiology : PACE - December 1, 2014 Category: Cardiology Authors: JOAQUÍN OSCA, PAU ALONSO, ÓSCAR CANO, JUAN MIGUEL SÁNCHEZ, DAVID TEJADA, ANA ANDRÉS, MARÍA JOSÉ SANCHO TELLO, JOSÉ OLAGÜE Tags: ORIGINAL ARTICLE Source Type: research

Cardiac responses to left ventricular pacing in hearts with normal electrical conduction: beneficial effect of improved filling is counteracted by dyssynchrony
In conclusion, pacing of the LV lateral wall increased LVEDV by displacing the septum rightward, suggesting a mechanism for a favorable effect of CRT in narrow QRS. The pacing, however, induced dyssynchrony and therefore reduced LV systolic function. These observations suggest that detrimental effects should be considered when applying CRT in patients with narrow QRS.
Source: AJP: Heart and Circulatory Physiology - August 1, 2014 Category: Cardiology Authors: Boe, E., Russell, K., Remme, E. W., Gjesdal, O., Smiseth, O. A., Skulstad, H. Tags: MUSCLE MECHANICS AND VENTRICULAR FUNCTION Source Type: research

Clinical Feasibility of Exercise‐Based A‐V Interval Optimization for Cardiac Resynchronization: A Pilot Study
ConclusionsDetermining optimized A‐V intervals by CPX is feasible. Proposed mechanisms explaining this finding and long‐term impact require further study.
Source: Pacing and Clinical Electrophysiology : PACE - July 15, 2014 Category: Cardiology Authors: INDRAJIT CHOUDHURI, DEAN MACCARTER, RACHAEL SHAW, STEVE ANDERSON, John St. CYR, IMRAN NIAZI Tags: ORIGINAL ARTICLE Source Type: research

Complex cardiac pacing in the setting of a district general hospital: procedural success and complications
Conclusions In the presence of necessary clinical expertise, complex cardiac devices can be implanted successfully and with a high degree of safety in the setting of a district general hospital.
Source: Heart Asia - June 24, 2014 Category: Cardiology Authors: Rahbi, H., El-din, M., Salloum, M., Shaukat, N., Farooq, M. Tags: Original research Source Type: research

Mechano-electrical coupling as framework for understanding functional remodeling during LBBB and CRT
In conclusion, MEC may represent a useful framework for better understanding the long-term changes in cardiac electrophysiology and contraction following LBBB as well as CRT.
Source: AJP: Heart and Circulatory Physiology - June 15, 2014 Category: Cardiology Authors: Kuijpers, N. H. L., Hermeling, E., Lumens, J., ten Eikelder, H. M. M., Delhaas, T., Prinzen, F. W. Tags: CARDIAC EXCITATION AND CONTRACTION Source Type: research

Cardiac Responses to Left Ventricular Pacing in Hearts with Normal Electrical Conduction: Beneficial Effect of Improved Filling is Counteracted by Dyssynchrony.
In conclusion, pacing of the LV lateral wall increased LVEDV by displacing the septum rightwards, suggesting a mechanism for a favorable effect of CRT in narrow QRS. The pacing, however, induced dyssynchrony and therefore reduced LV systolic function. These observations suggest that detrimental effects should be considered when applying CRT in patients with narrow QRS. PMID: 24906920 [PubMed - as supplied by publisher]
Source: American Journal of Physiology. Heart and Circulatory Physiology - June 6, 2014 Category: Physiology Authors: Boe E, Russell K, Remme EW, Gjesdal O, Smiseth OA, Skulstad H Tags: Am J Physiol Heart Circ Physiol Source Type: research

Mechano-electrical coupling as framework for understanding functional remodeling during LBBB and CRT.
In conclusion, MEC may represent a useful framework for better understanding the long-term changes in cardiac electrophysiology and contraction following LBBB as well as CRT. PMID: 24748591 [PubMed - as supplied by publisher]
Source: American Journal of Physiology. Heart and Circulatory Physiology - April 18, 2014 Category: Physiology Authors: Kuijpers NH, Hermeling E, Lumens J, Eikelder HT, Delhaas T, Prinzen FW Tags: Am J Physiol Heart Circ Physiol Source Type: research