Key result
A paced right bundle branch block morphology after right ventricular pacing can be evaluated using the Klein maneuver and specific ECG criteria to differentiate uncomplicated pacing from lead malposition.
Why the study?
Right bundle branch block morphology paradoxically occurs in 8 to 10% of patients after RV endocardial pacing, requiring special attention regarding safe pacing versus septal or free wall perforation.
How can the pacemaker lead be correctly identified in the right ventricle when paradoxical RBBB morphology is present after RV endocardial pacing?
How can the pacemaker lead be correctly identified in the right ventricle when paradoxical RBBB morphology is present after RV endocardial pacing?
The Klein maneuver and specific ECG algorithms can help differentiate safe RV pacing from perforation in patients presenting with paradoxical RBBB morphology after RV pacing.
May warrant perforation assessment in paced RBBB; Level 5 data leaves open need for validation.
Even though the left bundle branch block (LBBB) morphology in the surface electrocardiogram (ECG) is expected after right ventricular endocardial pacing, the right bundle branch block (RBBB) morphology may be paradoxically seen in around 8 to 10% of patients. The paced RBBB morphology should be given special attention in terms of safe RV pacing or septal and free wall perforation. Simple techniques such as moving the leads V1-2 to one interspace lower than standard (Klein maneuver) and combining frontal QRS axis between -30° to -90°, precordial transition point at or within V3, and absence of S wave in lead I as an algorithmic approach may correctly identify the pacemaker lead in right ventricle with high sensitivity, specificity, and positive predictive value.
No takes yet. Share an insight, caveat, or question.
Yadav et al. (2021) conducted a review in Right Bundle Branch Block Morphology after Right Ventricular Pacing. Right Ventricular Endocardial Pacing was evaluated. A paced right bundle branch block morphology after right ventricular pacing can be evaluated using the Klein maneuver and specific ECG criteria to differentiate uncomplicated pacing from lead malposition.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: