Propranolol was recently discovered to be an effective treatment for infantile haemangiomas, and varying doses and monitoring regimens have been proposed. Adverse events, although uncommon, have been reported.

This was a retrospective chart review of infants with haemangiomas who were started on propranolol at a dose of 3 milligrams per kilogram per day on an outpatient basis. After a baseline cardiac evaluation including an electrocardiogram and an echocardiogram, treatment was initiated during 6 hours of observation.

A total of 15 patients were identified; however, only 13 returned for at least one follow-up visit. This cohort was followed up for a median of 2.8 months with a range from 0.2 to 10.0. No hypotension, hypoglycaemia, bronchospasm, or clinically significant bradycardia occurred during treatment. All patients had clinical improvement of their haemangiomas.

This study suggests that initiating treatment during outpatient observation may be a reasonable alternative to inpatient admission. In addition, expensive testing may not be necessary during pre-treatment screening when the physical examination is normal.