Arrhythmias & electrophysiology
Effect of Direct Slow Pathway Capture Mapping–Guided Ablation on Typical Atrioventricular Nodal Re-Entrant Tachycardia
Authors' conclusion
DSPC mapping-guided ablation was associated with a lower operative time, which can reduce the risk of AV conduction injury in typical AVNRT.
Study context
- Population
- Patients with typical AVNRT
- Participants
- 301 patients
- Exposure
- Direct slow pathway capture (DSPC) mapping-guided ablation vs conventional anatomical ablation
- DSPCn = 116
- Outcome
- Efficacy and safety of DSPC mapping-guided ablation
Methodological detailsmulticentre, consecutive patients, historical control
- Multicentre
- Consecutive patients
- Historical control
Main finding
As reported in the abstract
Frequency of radiofrequency applications
P < 0.01
Observational data: associations, not effects.
Further findings
Total radiofrequency application time · significantly shorter with DSPC
P < 0.01
AVNRT recurrence · numerically lower with DSPC
P = 0.43
- Positive DSPC sites and ablation success (DSPC)
- 88% · 102 of 116
Safety
Permanent pacemaker implantation · numerically lower with DSPC
P = 0.17
Original publication
Effect of Direct Slow Pathway Capture Mapping–Guided Ablation on Typical Atrioventricular Nodal Re-Entrant Tachycardia. JACC Clin Electrophysiol. Published 26 October 2022. doi:10.
Summarised from the published abstract; every number is checked against it