At present, there is no clinical consensus for the management of SVT in infancy. The rationale for chronic therapy in SVT is to prevent recurrences and to limit symptoms during recurrences. Yet SVT recurrences are not readily predictable [11]. Many medications are available to treat SVT; however, these medications have associated risks and there are psychosocial implications for families. To date, most medications used to treat infant SVT have not been evaluated in controlled studies of infants. Thus, at present, physicians must make decisions about initiation and duration of chronic therapy and choice of medication in the absence of evidence from controlled clinical trials. A prospective, randomized clinical study is crucial to provide evidence to guide therapy of infant SVT.