Acute and chronic pain after cardiac surgery is a common problem that negatively affects quality of life. Postoperative pain after cardiac surgery is most intense in the first two days and decreases in the following period. However, postoperative pain with incomplete management in the acute period may become chronic. This may negatively affect the patient's quality of life. Although central blocks such as thoracic epidural and paravertebral blocks are considered the gold standard in analgesia control, the advantages of thoracic plan blocks, which are more superficial due to peroperative heparinisation; coagulation disorders; and procedural difficulties, are undeniable. Thoracic plane blocks, which can also be used in patients receiving anticoagulant and/or antiplatelet therapy, have recently been used for acute pain. The aim of this study was to evaluate the effect of thoracic plane blocks on extubation time, pain scores, intensive care unit (ICU) and hospital stays in patients undergoing median sternotomy.