Physiological mechanisms of QRS narrowing in bundle branch block patients undergoing permanent His bundle pacing.
J Electrocardiol
; 49(5): 644-8, 2016.
Article
in En
| MEDLINE
| ID: mdl-27485351
ABSTRACT
His bundle pacing is increasingly used to avoid chronic right ventricular pacing, and electrically resynchronize ventricular activation by narrowing or normalizing the QRS interval in left and right bundle branch block. The mechanisms by which this occurs remain poorly understood. In this review, the proposed mechanisms and evidence supporting them are discussed. Also discussed are aspects of mechanisms that are not completely supported by the evidence. We also review the differences and physiological bases for direct vs. indirect His bundle capture, and the physiological mechanisms for QRS narrowing vs. normalization following His bundle pacing.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Bundle-Branch Block
/
Bundle of His
/
Cardiac Pacing, Artificial
/
Heart Conduction System
/
Models, Cardiovascular
Limits:
Animals
/
Humans
Language:
En
Journal:
J Electrocardiol
Year:
2016
Document type:
Article
Affiliation country:
Canadá