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Serial assessment of accessory pathway antegrade conduction in children
Saawan B Satiya1, Prince J Kannankeril2, Frank A Fish2
1Meharry Medical College, 1005 Dr D. B. Todd Jr Blvd, Nashville, TN, USA.
Insights
Longitudinal data on accessory pathway (AP) antegrade conduction in children is scarce. This study found no significant change in fastest 1:1 AP conduction over time in pediatric patients.
Area of Science:
- Pediatric Cardiology
- Electrophysiology
Background:
- Longitudinal data on accessory pathway (AP) antegrade conduction during childhood is limited.
- Understanding AP conduction changes over time is crucial for risk stratification in pediatric patients.
Purpose of the Study:
- To assess the longitudinal changes in fastest 1:1 accessory pathway (AP) antegrade conduction throughout childhood.
- To evaluate the implications of these changes for risk stratification.
Main Methods:
- Serial electrophysiology studies (EPS) were performed on ten pediatric patients.
- Fastest 1:1 AP antegrade conduction was assessed at initial and follow-up EPS.
- Patients' median age at initial EPS was 4 days, and at follow-up was 53 months.
Main Results:
- The median fastest 1:1 AP conduction was 255 ms at initial EPS and 275 ms at follow-up (P=0.24).
- No significant change in conduction velocity was observed over the follow-up period.
- Neither the time interval between studies nor changes in retrograde AP conduction influenced the stability of antegrade conduction.
Conclusions:
- No patient demonstrated a significant shortening of 1:1 AP antegrade conduction over time.
- Accessory pathway conduction appears stable throughout early childhood.
- Further research is needed to fully understand the long-term implications for risk stratification.
Abstract:
There is limited longitudinal data on accessory pathway (AP) antegrade conduction throughout childhood, with implications for risk stratification. Ten patients underwent serial electrophysiology study (EPS) with assessment of fastest 1:1 AP conduction. The median age at first and follow-up EPS was 0 (median 4 days) and 53 months. Median fastest 1:1 AP conduction was 255 ms at initial EPS and 275 ms at follow-up (P=0.24). The interval of time between studies had no influence on stability over time, nor was there any appreciable effect following changes in retrograde AP conduction. In conclusion, no patient displayed any marked shortening of 1:1 AP conduction over time.
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