[A technical procedure in the Blalock operation for Fallot's tetrad to facilitate the radical intervention]

It is proposed that when carrying out subclavian-pulmonary anastomosis as a palliative measure in Fallot's tetralogy, a cord or open tourniquet clamp should be left round the subclavian. When radical operation comes to be carried out, some years later, this device will enable the fistula to be closed easily and quickly.