Recto-intercostal Block for Coronary Artery Bypass Grafting

This interventional study aims to learn about the postoperative analgesic efficacy of a new fascial plane block, recto-intercostal fascial plane block, at coronary artery bypass grafting with sternotomy. There will be two groups, one of which will be the control group, and the other will be the study group randomly receiving postoperative recto-intercostal fascial plane block. The main questions it aims to answer are the effect of this new block on postoperative opioid consumption and pain scores. Also, postoperative outcomes related to respiratory ( postoperative oxygenation and atelectasis score), hemodynamic functions ( newly developed arrhythmias), total postanesthesia care unit stay, and hospital stay will be questioned.