Why the study?
What are the predictors of recurrence of supraventricular tachycardia in pediatric patients?
What are the predictors of recurrence of supraventricular tachycardia in pediatric patients?
In pediatric patients with SVT, age at onset >1 year is a strong predictor of recurrence, whereas presence of WPW and gender do not significantly add to the prediction.
May guide pediatric SVT recurrence risk counseling by onset age; hypothesis-generating and requires prospective validation before practice change.
We analyzed risk of recurrence of supraventricular tachycardia (SVT) in 70 pediatric patients using both Kaplan-Meier survival analysis and logistic regression of likelihood of recurrence, each with covariates: (1) age at onset of SVT; (2) presence of Wolff-Parkinson-White syndrome (WPW), and (3) gender. Among 38 patients who had onset of SVT <1 year, only 11 had a recurrence, while among 32 older patients, 30 had a recurrence of SVT (p < 0.00001, Fisher's exact test). The survival analyses, stratified by age at onset <1 versus >1 year, were significantly different (p < 0.0001) as was stratification by presence of WPW (p < 0.01). Logistic regression analysis showed that the only significant predictor of recurrence was age at onset; the additional information provided by presence of WPW and gender did not significantly add to the prediction of recurrence. The odds ratio of recurrence for age at onset >1 versus <1 year was 34.6, with a 95% confidence interval of 6.98-172.
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Riggs et al. (1999) studied this question.
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