A simple technique is described with which to relieve postoperative compression of the heart. Although delayed sternal closure has conventionally been used to deal with postoperative compression, this maneuver always exposes the patient to the risk of infection. We have recently employed a simple method of sternal traction when there are signs of compression on temporary sternal closure. One or two couples of sutures in the sternum are used supported by bags of saline. This simple and effective method is applicable to patients, but especially to infants and neonates, without worrying about overindications.