The therapeutic agents that have been described will successfully convert close to 100% of all episodes of PST in children. Digoxin is the most frequently used agent for treatment of acute PST and is highly effective and safe. Recently, cardioversion and beta-adrenergic blockade are being employed more frequently, both with specific indications. Newer electrical means and new agents such as Verapamil are effective but the former are not yet widely used and the latter not yet authorized for use in the United States. Prophylaxis of recurrent episodes is usually successful with digoxin, with the addition or substitution of propranolol in certain conditions.

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