Cardiac resynchronization therapy resulting from atrial pacing: An unusual case of intraventricular conduction delay

2018 ◽  
Vol 41 (11) ◽  
pp. 1568-1571
Author(s):  
Clinton J. Thurber ◽  
Keith Suarez ◽  
Javier E. Banchs
Keyword(s):  
Cardiac Resynchronization Therapy ◽  
Unusual Case ◽  
Cardiac Resynchronization ◽  
Conduction Delay ◽  
Atrial Pacing ◽  
Resynchronization Therapy ◽  
Intraventricular Conduction ◽  
Intraventricular Conduction Delay

scholarly journals Physiological pacing to improve cardiac resynchronization therapy non-responder and a tryst with calcified septum—a case report

2021 ◽  
Vol 73 (1) ◽  
Author(s):  
Vanita Arora ◽  
Francesco Zanon ◽  
Viveka Kumar ◽  
Vivek Kumar ◽  
Pawan Suri
Keyword(s):  
Case Report ◽  
Cardiac Resynchronization Therapy ◽  
Ischemic Cardiomyopathy ◽  
Cardiac Resynchronization ◽  
Conduction Delay ◽  
Resynchronization Therapy ◽  
Intraventricular Conduction ◽  
Technological Approach ◽  
Intraventricular Septum ◽  
Intraventricular Conduction Delay

Abstract Background As per the literature, patients with intraventricular conduction delay (IVCD) do not respond well to cardiac resynchronization therapy (CRT) alone. They need advanced technological approach and out of the box thinking for a good response. Case Ours is a case of ischemic cardiomyopathy with wide QRS-IVCD, a non-responder to CRT. While planning for replacement of the device for early replacement indicator (ERI), we decided to do His-optimized CRT/left bundle optimized CRT (HOT-CRT/LOT-CRT) for the patient. Conclusion The challenges we faced with the present available hardware paved a way for insisting on the limitation of the available lumenless lead to penetrate calcified the septum and importance of the pre-procedure evaluation of intraventricular septum (IVS) for calcification by more than just echocardiography.

Nonspecific intraventricular conduction delay: Definitions, prognosis, and implications for cardiac resynchronization therapy

Heart Rhythm ◽  
2015 ◽  
Vol 12 (5) ◽  
pp. 1071-1079 ◽  
Author(s):  
Romain Eschalier ◽  
Sylvain Ploux ◽  
Philippe Ritter ◽  
Michel Haïssaguerre ◽  
Kenneth A. Ellenbogen ◽  
...  
Keyword(s):  
Cardiac Resynchronization Therapy ◽  
Cardiac Resynchronization ◽  
Conduction Delay ◽  
Resynchronization Therapy ◽  
Intraventricular Conduction ◽  
Intraventricular Conduction Delay

scholarly journals Prognostic Implications of ‘Paced’ and ‘Native’ QRS Durations Following Cardiac Resynchronization Therapy

2016 ◽  
Vol 02 (01) ◽  
pp. 30
Author(s):  
Oguz Karaca ◽  
Keyword(s):  
Cardiac Resynchronization Therapy ◽  
Response To Therapy ◽  
Cardiac Resynchronization ◽  
Current Evidence ◽  
Conduction Time ◽  
Resynchronization Therapy ◽  
Intraventricular Conduction ◽  
Surface Ecg ◽  
Future Outcomes ◽  
Electrocardiographic Parameters

Current evidence strongly suggests that the extent of electrical dyssynchrony within the left ventricle is determined by the delayed intraventricular conduction time reflected by a prolonged QRS duration (QRSd) on the surface (ECG). However, in cardiac resynchronization therapy (CRT) follow-up algorithms, the QRSd on the post-operative ECG has been relatively less frequently addressed, although the baseline QRSd is accepted as an essential ‘pre-operative’ marker for patient selection and prediction of response to therapy. In this review, we discuss the clinical impact of post-implantation electrocardiographic parameters, such as the ‘paced’ QRSd and ‘native’ QRSd (assessed when the device is temporarily switched off) on the efficacy of therapy and on prediction of future outcomes after CRT.

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