Changing QRS duration and morphology with A-paced and A-sensed rhythm in postcardiac resynchronization therapy (CRT) patients.

Saurabh Ajit Deshpande Ameya Udyavar

Published in: Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc (2019)

Meticulous interpretation of the ECGs of patients with cardiac resynchronization defibrillator therapy (CRT-D) device is important to ensure optimal synchronization of both the chambers. We present the ECGs of such a patient who was noted to have different morphologies of the biventricular-paced QRS depending in atrial-sensed (A-sensed) or atrial-paced (A-paced) rhythm.

Keyphrases

cardiac resynchronization therapy
left ventricular
atrial fibrillation
heart failure
end stage renal disease
left atrial
ejection fraction
chronic kidney disease
newly diagnosed
heart rate
prognostic factors
catheter ablation
mesenchymal stem cells
replacement therapy