Propranolol Palliation of Tetralogy of Fallot: Experience With Long-Term Drug Treatment in Pediatric Patients

22 pediatric patients with tetralogy of Fallot, including 13 infants (3 to 20 months of age) and 9 children (2 to 11 years of age). 18 patients had hypoxic spells prior to therapy.

Propranolol 1 mg/kg/6 hr orally. (Acute hemodynamic response to 0.2 mg/kg intravenously was also observed in 8 patients).

Frequency and severity of hypoxic spells