Clinical Report: A Systematic Review and Meta-Analysis of Adenosine Administration
Overview
This systematic review and meta-analysis evaluated weight-based adenosine dosing in pediatric patients with supraventricular tachycardia (SVT). The findings indicate a dose-response relationship, with higher doses correlating with increased rates of successful cardioversion.
Background
Supraventricular tachycardia (SVT) is the most prevalent arrhythmia in children, necessitating prompt intervention due to potential hemodynamic instability. Intravenous adenosine is the first-line treatment, yet variability in dosing practices persists, impacting treatment efficacy. Understanding the optimal dosing strategy is crucial for improving cardioversion success rates in this vulnerable population.
Data Highlights
Dose (µg/kg)
Conversion Probability (%)
95% Confidence Interval
<100
25
14–40
100
38
31–46
150–225
47
39–55
250–400
59
48–69
Total
41
35–47
Key Findings
SVT is the most common arrhythmia in children, with a significant incidence in the first year of life.
Adenosine is recommended as first-line therapy due to its rapid onset and favorable safety profile.
The study identified a dose-response relationship between weight-based adenosine dosing and cardioversion success.
Conversion probability increased with higher adenosine doses: 25% at <100 µg/kg, 38% at 100 µg/kg, 47% at 150–225 µg/kg, and 59% at 250–400 µg/kg.
Suboptimal dosing may lead to delayed cardioversion and increased care escalation.
Electrophysiologic classifications may influence the effectiveness of adenosine dosing strategies.
Clinical Implications
Clinicians should consider weight-based dosing of adenosine to optimize cardioversion outcomes in pediatric SVT patients. The findings support the need for standardized dosing protocols to enhance treatment efficacy and minimize complications.
Conclusion
This systematic review highlights the importance of appropriate adenosine dosing in achieving successful cardioversion in pediatric patients with SVT. Further research may be necessary to refine dosing strategies across different electrophysiologic mechanisms.
by Laís dos Santos, Thaís Martins Shehan, Candela Lang, Ricardo Sanchez Algarin, Ingrid Bezerra de Oliveira Ribeiro, Paulo Cesar Mattos Dourado de Mesquita, Guilherme Dagostin de Carvalho
