The Blalock–Hanlon procedure is a surgical procedure involving the heart.
It involves the intentional creation of a septal defect in order to alter the flow of oxygenated blood. It was devised as a palliative correction for transposition of the great vessels.
- Catherine A. Neill; Edward B. Clark (28 February 1995). The developing heart: a 'history' of pediatric cardiology. Springer. pp. 61–. ISBN 978-0-7923-3375-3. Retrieved 21 June 2011.